求初中数学计算题，题型如：a2（a-b）+(b-a)。（所有题必须都是这种全是字母的） 共需要100道。满意加分！ 急啊啊啊啊啊啊啊啊！！最晚本周日完成！！！高分！求初中数学计...
\u521d\u4e2d\u6570\u5b66>_<\u8ba1\u7b97\uff08a2+b2\uff09/\uff08a-b\uff09-a-b=\u3010\u6211\u7528\u4e86\u4e24\u79cd\u7b97\u6cd5\u90fd\u7b97\u51fa2b2/\uff08a-b\uff09\u53ef\u662f\u5168\u662f\u6211\u8f9b\u8f9b\u82e6\u82e6\u627e\u56de\u6765\u7684\u8d44\u6599\uff01\uff01\uff01
\u3010\u540c\u6b65\u6559\u80b2\u4fe1\u606f\u3011
\u4e00. \u672c\u5468\u6559\u5b66\u5185\u5bb9\uff1a
\u521d\u4e09\u7269\u7406\u4e13\u9898\u590d\u4e60\u2014\u2014\u521d\u4e2d\u7269\u7406\u8ba1\u7b97\u4e13\u9898\u8bad\u7ec3
\u4e8c. \u91cd\u70b9\u4e0e\u96be\u70b9
1. \u5728\u4e2d\u8003\u4e2d,\u7269\u7406\u7684\u8ba1\u7b97\u9898\u4e3b\u8981\u6709\u4e09\u4e2a\u677f\u5757\u7684\u9898\u578b,\u5373:
A. \u529b\u5b66(\u542b\u6d6e\u529b\u4e0e\u538b\u5f3a\u3001\u5bc6\u5ea6\u3001\u8fd0\u52a8\u3001\u673a\u68b0\u529f\u4e0e\u673a\u68b0\u80fd\u3001\u529f\u7387\u3001\u673a\u68b0\u6548\u7387\u7b49)\uff0c
B. \u70ed\u5b66\uff08\u542b\uff1a\u6bd4\u70ed\u5bb9\u7684\u8ba1\u7b97\u3001\u70ed\u91cf\u7684\u8ba1\u7b97\uff09\uff0c
C. \u7535\u5b66\uff08\u542b\u6b27\u59c6\u5b9a\u5f8b\u7684\u8ba1\u7b97\uff0c\u7535\u529f\u7684\u8ba1\u7b97\u3001\u7535\u529f\u7387\u7684\u8ba1\u7b97\u3001\u7535\u70ed\u7684\u8ba1\u7b97\uff09
\u4e09. \u4e3b\u8981\u77e5\u8bc6\u70b9
\u8ba1\u7b97\u9898\u662f\u6211\u4eec\u5728\u4e2d\u8003\u590d\u4e60\u65f6\u7684\u4e00\u4e2a\u91cd\u4e2d\u4e4b\u91cd\u7684\u77e5\u8bc6\u677f\u5757\uff0c\u8fd9\u90e8\u5206\u7684\u5185\u5bb9\u5728\u4e2d\u8003\u8bd5\u5377\u6240\u5360\u7684\u6bd4\u503c\u7ea6\u4e3a18%\uff5e26%\uff0c\u56e0\u6b64\u5728\u67d0\u79cd\u610f\u4e49\u4e0a\uff0c\u8fd9\u90e8\u5206\u7684\u5185\u5bb9\u662f\u540c\u5b66\u4eec\u5728\u4e2d\u8003\u4e2d\u53d6\u5f97\u80dc\u5229\u7684\u5173\u952e\u4e4b\u6240\u5728\uff0c\u800c\u8ba1\u7b97\u9898\u7684\u96be\u5ea6\u4e0d\u4f1a\u592a\u5927\uff0c\u53ea\u8981\u540c\u5b66\u4eec\u6309\u7167\u4e00\u5b9a\u7684\u65b9\u6cd5\uff0c\u627e\u51fa\u505a\u8ba1\u7b97\u9898\u7684\u4e00\u4e9b\u5185\u5728\u7684\u89c4\u5f8b\uff0c\u8fd9\u4e2a\u95ee\u9898\u5c31\u4e0d\u7b97\u662f\u592a\u96be\u3002
\uff08\u4e00\uff09\u529b\u5b66\u7684\u8ba1\u7b97
\u4e3b\u8981\u516c\u5f0f\u548c\u9898\u578b\u6709\uff1a
1. \u901f\u5ea6\u7684\u516c\u5f0f\uff1av\uff1d
2. \u8ba1\u7b97\u5bc6\u5ea6\u7684\u5927\u5c0f\uff1a \u5229\u7528\u516c\u5f0f\u03c1\uff1d\uff08\u6216\u8005\u03c1\uff1d\uff1b\u03c1\uff1d\u03c1\u6db2\uff09
3. \u538b\u5f3a\u7684\u8ba1\u7b97\uff1a\u5229\u7528\u516c\u5f0fP=
4. \u6d6e\u529b\u7684\u8ba1\u7b97\uff1a\u5229\u7528\u516c\u5f0f\uff1dG\uff0dF\u2032\uff1d\u03c1\u6db2g V\u6392\uff1dG\u7269
5. \u529f\u7684\u8ba1\u7b97\uff0c\u5229\u7528\u516c\u5f0fW\uff1dFS
6. \u529f\u7387\u7684\u8ba1\u7b97\uff0c\u5229\u7528\u516c\u5f0fP\uff1d\uff08=\uff09
7.\u673a\u68b0\u6548\u7387\u7684\u8ba1\u7b97\uff0c\u5229\u7528\u516c\u5f0f\uff1a\u03b7\uff1d\u00d7100%
8. \u6760\u6746\u7684\u5e73\u8861\u6761\u4ef6:F1L1=F2L2
\uff08\u4e8c\uff09\u70ed\u5b66\u8ba1\u7b97\u9898
1. Q\uff1dCm\u25b3t
\uff08\u4e09\uff09\u7535\u5b66
1. \u6b27\u59c6\u5b9a\u5f8b\uff1aI\uff1dU/R
2. \u7535\u529f\u7684\u8ba1\u7b97\u516c\u5f0f\uff1a
W\uff1dUIt\uff1dI2Rt\uff1dU2t/R\uff1dPt
3. \u7535\u529f\u7387\u8ba1\u7b97\uff1aP\uff1d\uff1dUI\uff1dU2/R
4. \u7126\u8033\u5b9a\u5f8b\uff1aQ\uff1dW\uff1dUIt\uff1dt\uff1dPt
\u65b9\u6cd5\u6307\u5bfc\uff1a\u521d\u4e2d\u7269\u7406\u7684\u89e3\u9898\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a
A. \u5206\u6790\u6cd5\uff1a\u4ece\u5f85\u6c42\u91cf\u5165\u624b\uff0c\u9009\u5b9a\u542b\u6709\u5f85\u6c42\u91cf\u7684\u516c\u5f0f\uff08\u79f0\u4e4b\u4e3a\u539f\u59cb\u516c\u5f0f\uff09\uff0c\u539f\u59cb\u516c\u5f0f\u4e2d\u5982\u679c\u8fd8\u6709\u672a\u77e5\u7684\u91cf\u518d\u9009\u5b9a\u8ba1\u7b97\u8fd9\u4e2a\u672a\u77e5\u91cf\u7684\u516c\u5f0f\uff0c\u5982\u679c\u524d\u4e00\u4e2a\u516c\u5f0f\u4e2d\u8fd8\u6709\u4e00\u4e2a\u672a\u77e5\u91cf\uff0c\u5219\u518d\u9009\u7528\u4e0e\u53e6\u4e00\u4e2a\u672a\u77e5\u91cf\u6709\u5173\u7684\u516c\u5f0f\uff0c\u76f4\u5230\u5b8c\u5168\u4e0e\u8fd9\u4e2a\u5df2\u77e5\u91cf\u6302\u8d77\u94a9\u6765\u3002\u5206\u6790\u7ed3\u675f\u540e\uff0c\u89e3\u9898\u65f6\uff0c\u662f\u6309\u7167\u5206\u6790\u7684\u9006\u5411\u8fc7\u7a0b\u8fdb\u884c\u3002
B. \u7efc\u5408\u6cd5\uff1a\u7efc\u5408\u6cd5\u89e3\u9898\u65f6\uff0c\u601d\u8def\u4ece\u5df2\u77e5\u91cf\u5165\u624b\uff0c\u6839\u636e\u9898\u610f\u5efa\u7acb\u8d77\u5df2\u77e5\u91cf\u4e0e\u672a\u77e5\u91cf\u4e4b\u95f4\u7684\u5173\u7cfb\u5f0f\u3002\u5bf9\u4e8e\u6bd4\u8f83\u590d\u6742\u7684\u95ee\u9898\u3002\u5df2\u77e5\u91cf\u4e0e\u672a\u77e5\u91cf\u4e4b\u95f4\u5f88\u96be\u627e\u5230\u4e00\u4e2a\u76f4\u63a5\u7684\u5173\u7cfb\u5f0f\u3002\u8fd9\u65f6\u5c31\u8981\u6839\u636e\u9898\u610f\u3001\u60c5\u666f\u7684\u6bcf\u4e00\u6b65\u7684\u53d8\u5316\u9009\u62e9\u4e00\u4e9b\u9002\u5f53\u7684\u4e2d\u95f4\u91cf\u548c\u4e2d\u95f4\u5173\u7cfb\uff0c\u9010\u6b65\u5b8c\u6210\u4ece\u5df2\u77e5\u91cf\u5411\u672a\u77e5\u91cf\u7684\u8fc7\u6e21\u3002
C. \u5b9a\u4f4d\u6cd5\uff1a\u5728\u7269\u7406\u8bd5\u5377\u4e2d\uff0c\u529b\u3001\u70ed\u3001\u7535\u4e09\u4e2a\u677f\u5757\u7684\u77e5\u8bc6\u7ed3\u6784\u548c\u5bf9\u5e94\u7684\u516c\u5f0f\u7ed3\u6784\u662f\u4e00\u5b9a\u7684\uff0c\u5bf9\u4e8e\u5e94\u8003\u7684\u5b66\u5b50\uff0c\u8981\u60f3\u5728\u77ed\u65f6\u95f4\u5185\u63d0\u9ad8\u6548\u76ca\uff0c\u5fc5\u987b\u5148\u5bf9\u8003\u8bd5\u7684\u8003\u9898\u8fdb\u884c\u5b9a\u4f4d\uff0c\u4ece\u800c\u627e\u51fa\u76f8\u5e94\u7684\u77e5\u8bc6\u7ed3\u6784\uff0c\u518d\u5957\u7528\u516c\u5f0f\uff0c\u6309\u56fe\u7d22\u9aa5\uff0c\u8fdb\u800c\u89e3\u51b3\u95ee\u9898\u3002\uff08\u8981\u6c42\u540c\u5b66\u4eec\u8bb0\u4f4f\u7269\u7406\u516c\u5f0f\u662f\u975e\u5e38\u6709\u5fc5\u8981\u7684\uff09
\u5178\u578b\u4f8b\u9898
\u4f8b1. \u5047\u671f\u91cc\uff0c\u5c0f\u5170\u548c\u7238\u7238\u3001\u5988\u5988\u4e00\u8d77\u53c2\u52a0\u4e86\u4e00\u4e2a\u5bb6\u5ead\u6e38\u620f\u6d3b\u52a8\u3002\u6d3b\u52a8\u8981\u6c42\u662f\uff1a\u5bb6\u5ead\u6210\u5458\u4e2d\u7684\u4efb\u610f\u4e24\u540d\u6210\u5458\u5206\u522b\u7ad9\u5728\u5982\u56fe15\u6240\u793a\u7684\u6728\u677f\u4e0a\uff0c\u6070\u597d\u4f7f\u6728\u677f\u6c34\u5e73\u5e73\u8861\u3002
\uff081\uff09\u82e5\u5c0f\u5170\u548c\u7238\u7238\u7684\u4f53\u91cd\u5206\u522b\u4e3a400N\u548c800N\uff0c\u5c0f\u5170\u7ad9\u5728\u8ddd\u79bb\u4e2d\u592e\u652f\u70b92m\u7684\u4e00\u4fa7\uff0c\u7238\u7238\u5e94\u7ad9\u5728\u8ddd\u79bb\u652f\u70b9\u591a\u8fdc\u5904\u624d\u80fd\u4f7f\u6728\u677f\u6c34\u5e73\u5e73\u8861?
\uff082\uff09\u82e5\u5c0f\u5170\u548c\u7238\u7238\u5df2\u7ecf\u6210\u529f\u5730\u7ad9\u5728\u4e86\u6728\u677f\u4e0a\uff0c\u73b0\u5728\u4ed6\u4eec\u540c\u65f6\u5f00\u59cb\u5300\u901f\u76f8\u5411\u884c\u8d70\uff0c\u5c0f\u5170\u7684\u901f\u5ea6\u662f0.5m\uff0fs\uff0c\u7238\u7238\u7684\u901f\u5ea6\u662f\u591a\u5927\u624d\u80fd\u4f7f\u6728\u677f\u6c34\u5e73\u5e73\u8861\u4e0d\u88ab\u7834\u574f?
\u56fe15
\u5206\u6790\uff1a\u8fd9\u662f\u4e00\u4e2a\u5173\u4e8e\u529b\u5b66\u90e8\u5206\u7684\u6bd4\u8f83\u7b80\u5355\u7684\u9898\uff0c\u5185\u5bb9\u6d89\u53ca\u5230\u6760\u6746\u5e73\u8861\u6761\u4ef6
\u548c\u901f\u5ea6\u7684\u5e94\u7528\u7b49\u77e5\u8bc6\uff0c\u5bf9\u4e8e\u6760\u6746\u5e73\u8861\u6761\u4ef6\u7684\u9898\u8981\u5206\u6790\u6e05\u695a\u54ea\u4e00\u70b9\u662f\u652f\u70b9\uff0c
\u54ea\u4e00\u70b9\u662f\u52a8\u529b\u7684\u4f5c\u7528\u70b9\uff0c\u54ea\u4e00\u70b9\u662f\u963b\u529b\u4f5c\u7528\u70b9\uff0c\u8fd0\u52a8\u529b\u7684\u65b9\u5411\u5411\u54ea\uff0c\u963b\u529b\u7684\u65b9\u5411\u5411\u54ea\uff0c\u52a8\u529b\u81c2\u4e0e\u963b\u529b\u81c2\u5206\u522b\u662f\u4ec0\u4e48\u5c31\u53ef\u4ee5\u4e86\uff0c\u7531\u4e8e\u672c\u9898\u7684\u652f\u70b9\u5728\u6728\u677f\u7684\u4e2d\u592e\uff0c\u53ef\u4ee5\u4e0d\u8ba1\u6728\u677f\u81ea\u8eab\u91cd\u529b\u7684\u5f71\u54cd\uff0c\u628a\u5c0f\u5170\u7684\u91cd\u529b\u770b\u4f5c\u52a8\u529b\uff0c\u5219\u7238\u7238\u7684\u91cd\u529b\u5c31\u662f\u963b\u529b\uff0c\u5229\u7528\u6760\u6746\u5e73\u8861\u6761\u4ef6\u672c\u9898\u53ef\u89e3\u3002
\u5728\u89e3\u7b2c\u4e8c\u95ee\u65f6\uff0c\u53ef\u636e\uff1a\uff1d\uff0c\u627e\u51fa\u4e24\u4e2a\u529b\u81c2\u7684\u6bd4\u503c\uff1d\u5373\u53ef\u6c42\u51fa\u7238\u7238\u7684\u901f\u5ea6\u3002
\u7b54\u6848\uff1a1.\u6839\u636e\u6760\u6746\u5e73\u8861\u6761\u4ef6\u6709\uff1a
\uff1d\u6709\u5f97L\u7238\uff1d
2.\u6839\u636e: \uff1d\u548c\uff1d=\u5f97==\u6545V2=\u00d70.5 m\uff0fs=0.25 m\uff0fs
\u8bf4\u660e\uff1a\u5728\u8ba1\u7b97\u8fd9\u65b9\u9762\u7684\u7269\u7406\u9898\u65f6\uff0c\u6211\u4eec\u5e94\u8be5\u610f\u8bc6\u5230,\u8fd9\u90e8\u5206\u7684\u9898\u76ee\u4e0d\u4f1a\u5f88\u96be\uff0c\u4f46\u662f\u89e3\u9898\u7684\u601d\u8def\u548c\u65b9\u6cd5\u5219\u662f\u6211\u4eec\u5e94\u8be5\u5b66\u4f1a\u5e76\u6ce8\u610f\u8fd0\u7528\u5230\u89e3\u51b3\u5b9e\u9645\u7684\u7269\u7406\u95ee\u9898\u4e2d\u53bb\u3002\u6bd4\u5982\u516c\u5f0f\u7684\u53d8\u5f62\uff0c\u53ca\u7b2c\u4e8c\u95ee\u4e2d\u7684\u65b9\u6cd5\u5e94\u7528\uff0c\u5219\u662f\u6211\u4eec\u503c\u5f97\u603b\u7ed3\u7684\u5185\u5bb9\u3002
\u4f8b2. \u5c06\u4e00\u6b63\u65b9\u4f53\u91d1\u5c5e\u5757\u6302\u5728\u5f39\u7c27\u6d4b\u529b\u8ba1\u4e0a\u79f0\u91cf.\u5f53\u91d1\u5c5e\u5757\u5728\u7a7a\u6c14\u4e2d\u65f6, \u5f39\u7c27\u6d4b\u529b\u8ba1\u793a\u6570\u4e3a19.6N,\u5f53\u91d1\u5c5e\u5757\u6d78\u6ca1\u5728\u6c34\u4e2d\u540e, \u5f39\u7c27\u6d4b\u529b\u8ba1\u793a\u6570\u4e3a9.8N,\u8bd5\u6c42\uff1a
\uff081\uff09\u91d1\u5c5e\u5757\u7684\u4f53\u79ef\u548c\u5bc6\u5ea6\uff1b
\uff082\uff09\u628a\u91d1\u5c5e\u5757\u653e\u5728\u6c34\u5e73\u684c\u9762\u4e2d\u592e\u65f6,\u5b83\u5bf9\u684c\u9762\u7684\u538b\u5f3a\u662f\u591a\u5927?
\u5206\u6790\uff1a\u672c\u9898\u53ef\u5148\u7528\u79f0\u91cd\u6cd5\u6c42\u51fa\u6d6e\u529b,\u518d\u636e\u6d6e\u529b\u516c\u5f0f\uff1d\u03c1\u6db2g V\u6392\u53d8\u5f62\u6c42\u51faV\u6392,\u800c\u6d78\u6ca1\u65f6V\u7269\uff1dV\u6392,\u7136\u540e\u53ef\u6c42\u51fa\u7269\u4f53\u7684\u5bc6\u5ea6\uff0c\u628a\u91d1\u5c5e\u5757\u653e\u5728\u6c34\u5e73\u684c\u9762\u4e0a\u65f6\uff0c\u5b83\u5bf9\u6c34\u5e73\u684c\u9762\u7684\u538b\u529b\u5e94\u8be5\u7b49\u4e8e\u7269\u4f53\u81ea\u8eab\u7684\u91cd\u529b\uff0c\u5229\u7528\u538b\u5f3a\u516c\u5f0f\uff0cP\uff1dF/S\u8fd9\u91ccF\uff1dG\uff0cS\u662f\u6b63\u65b9\u4f53\u7684\u8868\u9762\u79efS\uff1da2 a\uff1d
\u4e8e\u662f\u672c\u9898\u53ef\u89e3
\u7b54\u6848\uff1au/\u03c1\uff1d\u8fd9\u91ccG\u5df2\u77e5\uff0cV\u7269\uff1dV\u6392\uff1d\uff1d
\u4ee3\u5165\u5f97\uff1a\u03c1\uff1d\uff1d2.0\u00d7103kg/m3
\u7531V\u7269\uff1dV\u6392\uff1d\uff1d\u5f97V\u7269\uff1ddm3
\uff082\uff09\u7531\u516c\u5f0fP=F/S\uff0c
F=G\u5f97
P=G/S
\u53c8\u2235
\u2234
\u2234
\u8bf4\u660e\uff1a\u8fd9\u4e2a\u9898\u76ee\u6240\u6d89\u53ca\u7684\u662f\u538b\u529b\u4e0e\u538b\u5f3a\u7684\u6bd4\u8f83\u7b80\u5355\u7684\u5e94\u7528\uff0c\u8fd9\u79cd\u9898\u7684\u89e3\u9898\u96be\u5ea6\u4e0d\u5927\u4f46\u662f\u6d89\u53ca\u5230\u7684\u7269\u7406\u601d\u60f3\u548c\u7269\u7406\u65b9\u6cd5\u662f\u6211\u4eec\u8981\u7740\u624b\u89e3\u51b3\u7684\u4e3b\u8981\u95ee\u9898\u3002\u6211\u4eec\u5728\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u65f6\u7528\u5230\u4e86\u5b9a\u4f4d\u6cd5
\u4f8b3. \u5c0f\u4e3d\u8eab\u9ad8160cm\uff0c\u8d28\u91cf\u4e3a56kg\uff0c\u978b\u5e95\u7684\u652f\u627f\u9762\u79ef\u5982\u56fe26\u6240\u793a\uff08\u56fe26\u4e2d\u662f\u7528\u65b9\u683c\u7eb8\u63cf\u4e0b\u978b\u5e95\u8d34\u5730\u90e8\u5206\u7684\u8f6e\u5ed3\uff0c\u6bcf\u4e00\u5c0f\u683c\u7684\u9762\u79ef\u662f5cm2\uff0c\u8ba1\u7b97\u9762\u79ef\u65f6\uff0c\u5bf9\u4e8e\u4e0d\u6ee1\u4e00\u683c\u7684\uff0c\u51e1\u5927\u4e8e\u534a\u683c\u7684\u90fd\u7b97\u4e00\u683c\uff0c\u5c0f\u4e8e\u4e00\u683c\u7684\u90fd\u4e0d\u7b97\uff09\u3002\u5728\u4f53\u80b2\u52a0\u8bd5\u7684\u8df3\u7ef3\u6d4b\u8bd5\u4e2d\uff0c\u5c0f\u4e3d1min\u8df3150\u6b21\uff0c\u6bcf\u6b21\u817e\u7a7a\u7684\u9ad8\u5ea6\u5e73\u5747\u4e3a4cm\uff0c\u6c42\uff1a\uff08g\u53d610N/kg\uff09
\u56fe26
\uff081\uff09\u5c0f\u4e3d\u7ad9\u7acb\u65f6\uff0c\u5bf9\u5730\u9762\u7684\u538b\u5f3a\u662f\u591a\u5927\uff1f
\uff082\uff09\u5728\u8df3\u7ef3\u4e2d\uff0c\u5979\u514b\u670d\u91cd\u529b\u505a\u529f\u7684\u5e73\u5747\u529f\u7387\u662f\u591a\u5927\uff1f
\u5206\u6790\uff1a\u8fd9\u662f\u4e00\u9053\u5173\u4e8e\u538b\u529b\u4e0e\u538b\u5f3a\u7684\u6bd4\u8f83\u57fa\u7840\u7684\u9898\u578b\uff0c\u662f\u6211\u4eec\u4e2d\u8003\u8003\u751f\u5e94\u8be5\u5b66\u4f1a\u7684\u4e00\u79cd\u4e3b\u8981\u9898\u578b\uff0c\u5728\u8ba1\u7b97\u538b\u5f3a\u65f6\u5e94\u7528\u516c\u5f0fP\uff1dF/S\uff0c\u8fd9\u91cc\u7531\u4e8e\u5c0f\u4e3d\u540c\u5b66\u662f\u7ad9\u5728\u5730\u4e0a\u7684\uff0c\u6240\u4ee5\u5979\u5bf9\u5730\u9762\u7684\u538b\u529b\u5e94\u7b49\u4e8e\u81ea\u8eab\u7684\u91cd\u529b\u3002\u800c\u5173\u952e\u7684\u95ee\u9898\u662f\u53d7\u529b\u9762\u79ef\u7684\u6c42\u6cd5\uff0c\u6211\u4eec\u5728\u8fd9\u91cc\u5e94\u8be5\u91c7\u7528\u7269\u7406\u8bfe\u672c\u4e0a\u7684\u505a\u6cd5\uff0c\u5373\u5bf9\u4e8e\u8fd9\u4e2a\u978b\u5370\u7684\u95ee\u9898\uff0c\u6ee1\u523b\u5ea6\u7684\u6570\u503c+\u4e0d\u6ee1\u523b\u5ea6\u7684\u603b\u6570\u00f72.\u8fd9\u4e00\u95ee\u4e0e\u6211\u4eec\u7684\u7269\u7406\u8bfe\u672c\u5173\u7cfb\u975e\u5e38\u5bc6\u5207\u3002\u7528\u5230\u7684\u5c31\u662f\u8bfe\u672c\u4e0a\u7684\u77e5\u8bc6\uff0c\u800c\u7b2c\u4e8c\u95ee\u7684\u95ee\u9898\u5219\u662f\u5173\u4e8e\u529f\u7387\u7684\u95ee\u9898\uff0c\u5219\u53ef\u4ee5\u6839\u636e\u516c\u5f0fP\uff1dW/t\uff1dGh/t \u6bcf\u6b21\u8df3\u8d77\u7684\u9ad8\u5ea6\u662f4cm\uff0c1min\u8df3\u8d77150\u6b21\uff0c\u5219\u603b\u9ad8\u5ea6\u4e3a150\u00d74cm\uff1d600cm\uff1d6m\u65f6\u95f4\u4e3a60s\uff0c\u6545\u53ef\u6c42\u3002
\u7b54\u6848\uff1a\uff081\uff09\u5c0f\u4e3d\u7684\u91cd\u529b\u4e3aG\uff1dmg\uff1d56kg\u00d710N/kg\uff1d560N
\u6ee1\u683c\u5b50\u6570\u662f24\u683c\uff0c\u534a\u683c\u5b50\u6570\u662f8\u4e2a\uff0c\u5219\u603b\u683c\u5b50\u6570\u8bb0\u4f5c\uff1a24+8\u00d71/2\uff1d28
\u5219\u5c0f\u4e3d\u7684\u53cc\u811a\u5bf9\u5730\u9762\u7684\u538b\u529b\u9762\u79ef\u4e3a\uff1a2\u00d728\u00d75cm2 \uff1d2\u00d7140 cm2\uff1d2.8 \u00d710-2 m2
\u5219\u538b\u5f3a\u4e3aP=F/S=560N/2.8 \u00d710-2 m2=2\u00d7104 m2
\uff082\uff09\u5728\u8df3\u7ef3\u4e2d\uff0c\u5c0f\u4e3d\u7684\u529f\u7387\u4e3aP=W/t= Gh/t =560N\u00d7150\u00d70.04m/60s=56W
\u8bf4\u660e\uff1a\u672c\u9898\u662f\u5728\u8bfe\u672c\u77e5\u8bc6\u80cc\u666f\u4e0b\u7f16\u51fa\u7684\u4e00\u9053\u9898\uff0c\u800c\u5728\u89e3\u7b54\u8fd9\u4e2a\u95ee\u9898\u65f6\uff0c\u6211\u4eec\u7528\u5230\u4e86\u5206\u6790\u6cd5\u3002\u8fd9\u4e5f\u662f\u540c\u5b66\u4eec\u5e94\u8be5\u5c1d\u8bd5\u7684\u4e3b\u8981\u65b9\u6cd5\u4e4b\u4e00\u3002
\u4f8b4. \u5c0f\u6797\u5bb6\u65b0\u4e70\u4e86\u4e00\u4e2a\u5bb6\u7528\u7535\u70ed\u6c34\u58f6\uff0c\u6c34\u58f6\u7684\u5e95\u90e8\u94ed\u724c\u4e0a\u6807\u6709\u201c220V-50Hz 900W\u201d\u7684\u5b57\u6837\uff0c\u5728\u4fa7\u9762\u900f\u660e\u7684\u7a97\u53e3\u4e0a\u6e05\u6670\u7684\u6807\u7740\u76db\u6c34\u7684\u6700\u5927\u5bb9\u91cf\u548c\u6700\u5c0f\u5bb9\u91cf\u201cMAX-1.0L MIN\u20140.5L\u201d\u3002\u5c0f\u6797\u5bf9\u65b0\u7535\u70ed\u6c34\u58f6\u5f88\u611f\u5174\u8da3\uff0c\u4e8e\u662f\u5728\u5bb6\u91cc\u505a\u8d77\u4e86\u5b9e\u9a8c\u3002\u4ed6\u628a\u6c34\u5012\u5165\u6c34\u58f6\u4e2d\u81f3\u6700\u5927\u5bb9\u91cf\u5904\uff0c\u7528\u6e29\u5ea6\u8ba1\u6d4b\u51fa\u6c34\u7684\u521d\u6e29\u662f20\u2103\uff0c\u901a\u75356min\u540e\u6c34\u70e7\u5f00\u4e86(\u8bbe\u5f53\u65f6\u7684\u6c14\u538b\u4e3a\u4e00\u6807\u51c6\u5927\u6c14\u538b)\u3002\u6839\u636e\u4ee5\u4e0a\u6570\u636e\uff0c\u8bf7\u4f60\u8ba1\u7b97\uff1a
\uff081\uff09\u7535\u70ed\u6c34\u58f6\u52a0\u70ed\u8fc7\u7a0b\u4e2d\u6d88\u8017\u7684\u7535\u80fd\u662f\u591a\u5c11\u7126?
\uff082\uff09\u52a0\u70ed\u8fc7\u7a0b\u4e2d\u6c34\u5438\u6536\u7684\u70ed\u91cf\u662f\u591a\u5c11\u7126?(C\u6c34\uff1d4.2\u00d7103J\uff0f(kg\u00b7\u2103))
\uff083\uff09\u6bd4\u8f83(1)(2)\u4e24\u95ee\u6240\u5f97\u7684\u6570\u636e\uff0c\u4f60\u8ba4\u4e3a\u5408\u7406\u5417?
\uff084\uff09\u5982\u679c\u4e0d\u5408\u7406\uff0c\u4f60\u8ba4\u4e3a\u53ef\u80fd\u7684\u539f\u56e0\u662f\u4ec0\u4e48?(\u5199\u51fa\u4e00\u79cd\u53ef\u80fd\u7684\u539f\u56e0)
\u5206\u6790\uff1a\u8fd9\u662f\u4e00\u4e2a\u7535\u5b66\u4e0e\u70ed\u5b66\u7efc\u5408\u5728\u4e00\u8d77\u7684\u7269\u7406\u95ee\u9898\uff0c\u8fd9\u4e5f\u662f\u5728\u8fd1\u5e74\u6765\u7684\u4e2d\u8003\u4e2d\u7ecf\u5e38\u9047\u5230\u7684\u4e00\u79cd\u5178\u578b\u9898\uff0c\u6211\u4eec\u53ef\u4ee5\u5bf9\u6bcf\u4e00\u4e2a\u7269\u7406\u95ee\u9898\u5148\u5b9a\u4f4d\uff0c\u7136\u540e\u518d\u67e5\u627e\u76f8\u5173\u7684\u7269\u7406\u516c\u5f0f\uff0c\u4ece\u800c\u6765\u89e3\u51b3\u95ee\u9898\u3002
\u7b2c\u4e00\u95ee\u662f\u5173\u4e8e\u7535\u80fd\u7684\u8ba1\u7b97\u3002\u8981\u7528\u5230\u7684\u516c\u5f0f\u662fW\uff1dPt\uff0c\u7528\u9898\u76ee\u4e2d\u5df2\u77e5\u7684\u7535\u529f\u7387\u4e0e\u65f6\u95f4\u7684\u79ef\u6765\u6c42\uff1b
\u7b2c\u4e8c\u95ee\uff0c\u5219\u662f\u8003\u67e5\u70ed\u5b66\u77e5\u8bc6\u4e2d\u5173\u4e8e\u70ed\u91cf\u7684\u8ba1\u7b97\uff1b\u7528\u516c\u5f0f\uff1aQ\uff1dCm\u25b3tm\uff1d\u03c1v
\u7b2c\u4e09\u95ee\u662f\u5bf9\u5b9e\u9a8c\u6570\u636e\u7684\u5904\u7406\u548c\u8bc4\u4ef7\u7684\u9898\u76ee\uff0c\u8fd9\u770b\u4f3c\u6d89\u53ca\u5230\u4e86\u70ed\u7684\u6548\u7387\u65b9\u9762\u7684\u5185\u5bb9,\u5176\u5b9e\u53ef\u80fd\u53e6\u6709\u5176\u5b83\u60c5\u51b5\u3002
\u7b2c\u56db\u95ee\u5219\u662f\u5173\u4e8e\u5bf9\u8fd9\u4e2a\u95ee\u9898\u7684\u8bc4\u4ef7\u5373\u9020\u6210\u70ed\u91cf\u6563\u5931\u7684\u539f\u56e0\uff0c\u548c\u70ed\u91cf\u7684\u4f5c\u7528\u7387\u7684\u95ee\u9898\u3002
\u7b54\u6848\uff1a\uff081\uff09W\u653e\uff1dPt\uff1d900W\u00d76\u00d760s\uff1d324000J
\uff082\uff09\u6c34\u5438\u6536\u7684\u70ed\u91cf\u662fQ\uff1dCm\u25b3t\uff1d4.2\u00d7103J\uff0f(kg\u00b7\u2103\u00d71.0kg/dm3) \u00d7\uff08100\uff0d20\uff09\u2103
\uff1d3.36\u00d7105J
\uff083\uff09W\u653e<Q,\u5373\u6db2\u4f53\u6240\u5438\u6536\u5230\u7684\u70ed\u91cf\u5927\u4e8e\u653e\u51fa\u7684\u70ed\u91cf,\u6545\u8fd9\u4e0d\u5408\u7406.
\uff084\uff09\u539f\u56e0\u53ef\u80fd\u6709\uff1aA\u6c34\u4f4d\u6c34\u91cf\u4e0d\u51c6\u786e\uff08\u6bd4\u771f\u5b9e\u503c\u504f\u5927\uff09\uff0cB\u3001\u5f53\u65f6\u7684\u5b9e\u9645\u7535\u538b\u6bd4\u989d\u5b9a\u7535\u538b220V\u9ad8\uff0cC\u3001\u7535\u70ed\u58f6\u4e0a\u7684\u6807\u79f0\u503c\u6bd4\u5b9e\u9645\u503c\u504f\u5c0f\uff0cD\u3001\u5c0f\u6797\u8bb0\u5f55\u7684\u65f6\u95f4\u6bd4\u5b9e\u9645\u7684\u65f6\u95f4\u5c11\u3002
\u8bf4\u660e\uff1a\u672c\u9898\u5728\u5b9e\u9645\u89e3\u7b54\u65f6\uff0c\u5b9c\u7528\u5b9a\u4f4d\u6cd5\u3002\u5148\u5b9a\u4f4d\u5230\u54ea\u4e2a\u516c\u5f0f\uff0c\u7136\u540e\u518d\u6765\u6c42\u89e3\u516c\u5f0f\u4e2d\u6240\u8981\u6c42\u7684\u91cf\uff0c\u5982\u6b64\u5373\u53ef\u6c42\u51fa\u95ee\u9898\u7684\u7b54\u6848\u3002\u5728\u89e3\u51b3\u540e\u9762\u7684\uff083\uff09\uff084\uff09\u4e24\u95ee\u65f6\uff0c\u6211\u4eec\u9996\u5148\u5e94\u5bf9\u81ea\u5df1\u524d\u9762\u4e24\u95ee\u7684\u89e3\u7b54\u5145\u5206\u67e5\u8bc1\uff0c\u5982\u81ea\u5df1\u7684\u4f5c\u6cd5\u5982\u679c\u65e0\u8bef\uff0c\u5219\u5b9e\u9645\u7684\u539f\u56e0\u5c31\u5e94\u8be5\u591a\u52a8\u8111\u7b4b\u60f3\uff0c\u6700\u540e\u603b\u662f\u80fd\u627e\u5230\u7b54\u6848\u7684\u3002
\u4f8b5. \u67d0\u5174\u8da3\u5c0f\u7ec4\u7684\u540c\u5b66\u8fdb\u884c\u7535\u5b66\u5b9e\u9a8c\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u4e86\u4e00\u4e2a\u6709\u8da3\u7684\u5143\u4ef6\uff0c\u7531\u4e8eA\u3001B\u4e24\u90e8\u5206\u88ab\u5c01\u95ed\u5728\u4e00\u4e2a\u900f\u660e\u7684\u73bb\u7483\u58f3\u5185\uff0ca\u3001b\u662f\u5176\u4e24\u4e2a\u5916\u9732\u7684\u63a5\u7ebf\u67f1\uff08\u5982\u56fe27-\u7532\uff09\u3002\u4ed6\u4eec\u4e86\u89e3\u5230B\u662f\u4e00\u4e2a\u5b9a\u503c\u7535\u963b\uff0c\u5176\u7535\u538b\u4e0e\u7535\u6d41\u5173\u7cfb\u5982\u8868\u6240\u793a\uff1aA\u662f\u4e00\u79cd\u7531\u7279\u6b8a\u91d1\u5c5e\u4e1d\u5236\u6210\u7684\u5bfc\u4f53\uff0c\u5b83\u7684\u989d\u5b9a\u7535\u538b\u662f6V\u3002\u4e3a\u8fdb\u4e00\u6b65\u4e86\u89e3A\u7684\u67d0\u4e9b\u7279\u5f81\uff0c\u4ed6\u4eec\u5c06\u5143\u4ef6\u7684ab\u4e24\u7aef\u63a5\u5728\u56fe27-\u4e59\u7684a\u2032b\u2032\u4e24\u70b9\uff0c\u6d4b\u5f97\u4e86\u591a\u7ec4\u5143\u4ef6\u7684\u7535\u538b\u4e0e\u7535\u6d41\u503c\uff0c\u5e76\u7ed8\u5236\u6210\u5982\u56fe27-\u4e19\u7684\u66f2\u7ebf\u3002\u8bf7\u6839\u636e\u4e0a\u8ff0\u4fe1\u606f\u56de\u7b54:
\uff081\uff09\u8ba1\u7b97\u7535\u963bB\u7684\u963b\u503c\u3002
\uff082\uff09\u8ba1\u7b97\u5bfc\u4f53A\u7684\u989d\u5b9a\u529f\u7387\u3002
\uff083\uff09\u8c03\u8282\u6ed1\u52a8\u53d8\u963b\u5668\uff0c\u4f7f\u7535\u538b\u8868\u793a\u6570\u4e3a4V\uff0c\u8ba1\u7b9710s\u5185\u5bfc\u4f53A\u4ea7\u751f\u7684\u70ed\u91cf\u548c\u5bfc\u4f53B\u7684\u5b9e\u9645\u529f\u7387\u3002
\u7535\u538bU\uff08V\uff09
2.0
4.0
6.0
\u7535\u6d41I\uff08A\uff09
0.10
0.20
0.30
\u56fe27
\u5206\u6790\uff1a\u672c\u9898\u662f\u7535\u5b66\u90e8\u5206\u8ba1\u7b97\u9898\u4e2d\u6bd4\u8f83\u5178\u578b\u7684\u4e00\u79cd\u9898\uff0c\u7531\u4e8e\u672c\u9898\u6240\u6d89\u53ca\u5230\u7684\u90fd\u662f\u4e00\u4e9b\u7535\u5b66\u4e2d\u6700\u4e3a\u57fa\u7840\u7684\u4e00\u4e9b\u8ba1\u7b97\uff0c\u96be\u5ea6\u4e0d\u5927\uff0c\u505a\u672c\u9898\u7528\u524d\u9762\u6240\u8bb2\u7684\u7efc\u5408\u6cd5\u6bd4\u8f83\u597d\u3002
\u5f53\u7136\uff0c\u9996\u5148\u5b9a\u4f4d\uff0c\u7b2c\u4e00\u95ee\uff1a\u6c42\u7535\u963b\u7528\u6b27\u59c6\u5b9a\u5f8b\uff0c\u901a\u8fc7\u8868\u4e2d\u7684\u6570\u636e\uff0c\u4ee3\u5165\u6b27\u59c6\u5b9a\u5f8b\u516c\u5f0f\uff0c\u5219\u8fd9\u4e2a\u95ee\u9898\u4e0d\u96be\u89e3\u51b3\u3002
\u7b2c\u4e8c\u95ee\uff0c\u6c42\u5bfc\u4f53A\u7684\u989d\u5b9a\u529f\u7387\uff0c\u7528\u516c\u5f0fP\uff1dUI\u5373\u53ef\uff0c\u53ea\u662f\u8981\u6ce8\u610f\uff0c\u516c\u5f0f\u4e2d\u7684UI\u90fd\u662f\u6307\u5b83\u4eec\u7684\u989d\u5b9a\u7535\u538b\u4e0e\u989d\u5b9a\u7535\u6d41\uff0c\u8fd9\u4e2a\u6570\u636e\u8981\u4ece\u5750\u6807\u56fe\u4e0a\u627e\u51fa\uff0c\u989d\u5b9a\u7535\u538b\u4e3a6V\uff0c\u5bf9\u5e94\u7684\u7535\u6d41\u503c\u5373\u53ef\u5229\u7528\u516c\u5f0f\u6c42\u89e3\u3002
\u7b2c\u4e09\u95ee\u5728\u77e5\u9053\u4e86\u7535\u538b\u7684\u57fa\u7840\u4e0a\uff0c\u7531\u4e8e\u4e24\u4e2a\u7528\u7535\u5668\u662f\u5e76\u8054\u7684\uff0c\u7535\u538b\u90fd\u4e3a4V\uff0c\u5bf9\u4e8eA\u7684\u7535\u6d41\u901a\u8fc7\u67e5\u8868\u53ef\u77e5\uff0cB\u7684\u5b9e\u9645\u529f\u7387\u7528P\uff1dU2/R\u6765\u6c42\u3002
\u7b54\u6848\uff1a\uff081\uff09\u6839\u636e\u8868\u4e2d\u7684\u6570\u636e\u7531\u6b27\u59c6\u5b9a\u5f8b\u53ef\u5f97R\uff1dU/I\uff1d2.0V/0.1A\uff1d20\u03a9
R\uff1dU/I\uff1d4.0V/0.2A\uff1d20\u03a9 R\uff1dU/I\uff1d6.0V/0.30A\uff1d20\u03a9\u3002
\u5373B\u7684\u7535\u963b\u4e3a20\u03a9
\uff082\uff09\u7531\u56fe\u50cf\u53ef\u4ee5\u770b\u51fa\u5f53\u7535\u538b\u4e3a6V\u65f6\uff0c\u5bf9\u5e94\u7684\u7535\u6d41\u4e3a0.46A\uff0c\u6545A\u7684\u989d\u5b9a\u529f\u7387\u4e3aP\uff1dUI
\uff1d6V\u00d70.46A\uff1d2.76W
\uff083\uff09\u5f53\u7535\u538b\u4e3a4V\u65f6\uff0c\u7531\u56fe\u50cf\u4e2d\u7684\u6570\u636e\u53ef\u77e5\uff0c\u7535\u6d41\u4e3a0.38A
\u5219A\u7684\u5b9e\u9645\u529f\u7387\u4e3aP\uff1dUI\uff1d4V\u00d70.38A\uff1d1.44W
B\u7684\u529f\u7387\u4e3aP\uff1dU2/R\uff1d1.6W\u3002
\u8bf4\u660e\uff1a\u5728\u8fd9\u4e2a\u95ee\u9898\u4e2d\u6211\u4eec\u5148\u7528\u5b9a\u4f4d\u6cd5\uff0c\u5b9a\u4f4d\u672c\u9898\u6240\u5c5e\u7684\u77e5\u8bc6\u4f53\u7cfb\uff0c\u7136\u540e\u7528\u5206\u6790\u6cd5\uff0c\u5c06\u8981\u6c42\u7684\u7269\u7406\u91cf\u6240\u6d89\u53ca\u5230\u7684\u516c\u5f0f\u8868\u793a\u51fa\u6765\uff0c\u5176\u4e2d\u7684\u672a\u77e5\u91cf\u4ece\u9898\u76ee\u4e2d\u6240\u63d0\u4f9b\u7684\u4e00\u4e9b\u4fe1\u606f\u6765\u89e3\u51b3
\u4f8b6.\u5982\u56fe28\u662f\u4e00\u79cd\u6d4b\u91cf\u5c0f\u6c7d\u8f66\u6cb9\u7bb1\u5185\u6cb9\u91cf\u88c5\u7f6e\u7684\u539f\u7406\u56fe\u3002\u538b\u529b\u4f20\u611f\u5668R\u7684\u7535\u963b\u4f1a\u968f\u6240\u53d7\u538b\u529b\u7684\u5927\u5c0f\u53d1\u751f\u53d8\u5316\uff0c\u6cb9\u91cf\u8868\uff08\u7531\u7535\u6d41\u8868\u6539\u88c5\u800c\u6210\uff09\u6307\u9488\u80fd\u6307\u793a\u51fa\u6cb9\u7bb1\u91cc\u7684\u6cb9\u7684\u591a\u5c11.\u5df2\u77e5\uff1a\u538b\u529b\u4f20\u611f\u5668R\u7684\u7535\u963b\u4e0e\u6240\u53d7\u538b\u529b\u7684\u5173\u7cfb\u5982\u4e0b\u8868\u6240\u793a.(g\u53d610N/kg)
\u538b\u529bF/N
0
50
100
150
200
250
300
\u2026
\u7535\u963bR/\u03a9
500
380
310
245
200
170
150
\u2026
\u82e5\u538b\u529b\u4f20\u611f\u5668R\u7684\u4e0a\u8868\u9762\u9762\u79ef\u4e3a5cm2\uff0c\u6c7d\u6cb9\u70ed\u503c\u4e3a4.2\u00d7 107J/kg\uff0c\u6c7d\u6cb9\u5bc6\u5ea6\u4e3a0.71\u00d7
103\u338f/m3\uff0c\u7535\u6e90\u7535\u538b\u4e3a6V\u3002\u8bf7\u56de\u7b54\uff1a
\u56fe28
\uff081\uff09\u5f53\u6cb9\u4e0e\u7bb1\u603b\u91cd\u4e3a600N\u65f6\uff0c\u538b\u529b\u4f20\u611f\u5668R\u53d7\u5230\u7684\u538b\u5f3a\u662f\u591a\u5927\uff1f
\uff082\uff09\u82e5\u6cb9\u7bb1\u5185\u6cb9\u4e3a10\u338f\u65f6\uff0c\u6c7d\u6cb9\u5b8c\u5168\u71c3\u70e7\u80fd\u653e\u51fa\u7684\u70ed\u91cf\u662f\u591a\u5c11\uff1f
\uff083\uff09\u5982\u679c\u7a7a\u6cb9\u7bb1\u7684\u8d28\u91cf\u4e3a5.8\u338f,\u6cb9\u91cf\u8868\u6307\u9488\u6307\u54112\u00d710-2m3\u65f6\uff0c\u7535\u8def\u4e2d\u7535\u6d41\u662f\u591a\u5c11\uff1f
\u5206\u6790\uff1a\u8fd9\u662f\u4e00\u4e2a\u96c6\u529b\u5b66\u3001\u70ed\u5b66\u3001\u7535\u5b66\u7684\u8ba1\u7b97\u4e8e\u4e00\u4f53\u7684\u9898\u76ee\uff0c\u7efc\u5408\u6027\u6bd4\u8f83\u5f3a\uff0c\u6240\u6d89\u53ca\u7684\u77e5\u8bc6\u70b9\u6bd4\u8f83\u591a\uff0c\u4f46\u662f\u8fd9\u4e2a\u9898\u76ee\u5e76\u4e0d\u96be\u3002
\u7b2c\u4e00\u95ee\u7528\u516c\u5f0f\uff1aP\uff1dF/S\uff0c\u627e\u51fa\u538b\u529b\u5373\u6cb9\u4e0e\u7bb1\u7684\u603b\u91cd\uff0c\u53d7\u529b\u9762\u79ef\u5373\u4e3a\u4f20\u611f\u5668\u7684\u4e0a\u8868\u9762\u7684\u9762\u79ef\uff1b
\u7b2c\u4e8c\u95ee\u6cb9\u7bb1\u4e2d\u7684\u6cb9\u8d28\u91cf\u5df2\u77e5\uff0c\u6c42\u5176\u71c3\u70e7\u6240\u653e\u51fa\u7684\u70ed\u91cf\uff0c\u7528\u516c\u5f0fQ\uff1dqm\uff0c\u53ef\u89e3\uff1b
\u7b2c\u4e09\u95ee\u6c42\u7535\u8def\u4e2d\u7684\u7535\u6d41\uff0c\u7535\u6e90\u7535\u538b\u5df2\u77e5\uff0c\u53ea\u8981\u8bbe\u6cd5\u6c42\u51fa\u7535\u8def\u4e2d\u7684\u7535\u963b\u5373\u53ef\uff0c\u800c\u8981\u7535\u963b\uff0c\u800c\u7535\u963b\u7684\u5927\u5c0f\u53c8\u4e0e\u7535\u8def\u4e2d\u7684\u538b\u529b\u6709\u5173\uff0c\u5f53\u6cb9\u7bb1\u4e2d\u7684\u6cb9\u91cf\u4e3a2\u00d710-2m3\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u7b97\u51fa\u6cb9\u7bb1\u4e2d\u6cb9\u7684\u8d28\u91cf\uff0c\u4ece\u800c\u6c42\u51fa\u6cb9\u7684\u91cd\u529b\u8ba1\u7b97\u51fa\u6b64\u65f6\u7684\u538b\u529b\u67e5\u8868\u6c42\u51fa\u7535\u963b\u503c\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u7535\u6d41\u3002
\u7b54\u6848\uff1a\uff081\uff09\u6839\u636eP\uff1dF/S\u5f97P\uff1d\uff1d1.2\u00d7106Pa
\uff082\uff09\u6839\u636eQ\uff1dqm\u5f97Q\uff1dqm =4.2\u00d7107J/kg\u00d710kg=4.2\u00d7108J
\uff083\uff09\u6839\u636e\u5f97:m=\u03c1v=0.71\u00d7103\u338f/m3\u00d7 2\u00d710-2m3
=14.2kg
G\u603b=mg=(14.2kg+5.8kg) \u00d710N/kg=200N
\u67e5\u8868\u77e5:\u7535\u963b\u4e3a200\u03a9\u7535\u6e90\u7535\u538b\u4e3a6V\u6545\u7531\u6b27\u59c6\u5b9a\u5f8b\u5f97:
I=U/R=6V/200\u03a9=0.03A
\u8bf4\u660e\uff1a\u8fd9\u4e2a\u9898\u76ee\u53ef\u4ee5\u7528\u5206\u6790\u6cd5\u6765\u6c42\u89e3\uff0c\u5728\u6c42\u6700\u540e\u4e00\u95ee\u65f6\uff0c\u7efc\u5408\u6027\u6bd4\u8f83\u5f3a\uff0c\u8981\u5229\u7528\u5206\u6790\u6cd5\u6765\u6c42\u89e3.
\u3010\u8bd5\u9898\u7b54\u6848\u3011
1. A\u7ad93\u79d2\u949f\u80fd\u542c\u5230\u53d1\u81eaB\u5904\u706b\u8f66\u7684\u7b1b\u58f0\uff0c\u5982\u679c\u706b\u8f66\u4ee561.2\u5343\u7c73/\u5c0f\u65f6\u7684\u901f\u5ea6\u505a\u5300\u901f\u76f4\u7ebf\u8fd0\u52a8\uff0c\u90a3\u4e48\uff0c\u706b\u8f66\u7531B\u5904\u5230A\u7ad9\u8fd0\u884c\u7684\u65f6\u95f4\u662f\u591a\u5c11\uff1f
2. \u7532\u4e59\u4e24\u5730\u76f8\u8ddd3000\u7c73\uff0c\u67d0\u4eba\u4ece\u7532\u5730\u51fa\u53d1\uff0c\u524d10\u5206\u949f\u8d70\u4e861600 \u7c73\uff0c\u4f11\u606f\u4e8610\u5206\u949f\u540e\u7ee7\u7eed\u524d\u8fdb\uff0c\u53c8\u8d70\u4e8610\u5206\u949f\u5230\u8fbe\u4e59\u5730\uff0c\u95ee\u6b64\u4eba\u4ece\u7532\u5730\u5230\u4e59\u5730\u7684\u5e73\u5747\u901f\u5ea6\u662f\u591a\u5927\uff1f
3. \u67d0\u94f8\u94c1\u4ef6\u5728\u94f8\u9020\u65f6\u6240\u7528\u6728\u6a21\u7684\u8d28\u91cf\u662f18\u5343\u514b\uff0c\u6728\u6a21\u7684\u5bc6\u5ea6\u662f0.6\u00d7103\u5343\u514b/\u7c733\uff0c\u94f8\u94c1\u4ef6\u94f8\u6210\u540e\u79f0\u5f97\u5176\u8d28\u91cf\u662f206\u5343\u514b\uff0c\u5df2\u77e5\u94f8\u94c1\u7684\u5bc6\u5ea6\u4e3a7.0 \u00d7103\u5343\u514b/\u7c733\uff0c\u95ee\uff1a\u8be5\u94f8\u94c1\u4ef6\u4e2d\u6709\u65e0\u6c14\u6ce1\uff1f\u4e3a\u4ec0\u4e48\uff1f
4. \u6709\u4e00\u4e2a\u6bcf\u8fb9\u957f\u4e3a0.1\u7c73\u7684\u6b63\u65b9\u4f53\u91d1\u5c5e\u5757\uff0c\u8d28\u91cf\u4e3a10\u5343\u514b\uff0c\u653e\u4e8e\u9762\u79ef\u4e3a1\u7c732\u7684\u6c34\u5e73\u684c\u9762\u4e2d\u592e\uff0c\u91d1\u5c5e\u5757\u5bf9\u684c\u9762\u7684\u538b\u5f3a\u662f\u591a\u5927\uff1f\u5982\u679c\u518d\u752812\u725b\u987f\u7684\u529b\u6cbf\u7ad6\u76f4\u65b9\u5411\u538b\u91d1\u5c5e\u5757\uff0c\u8fd9\u65f6\u91d1\u5c5e\u5757\u5bf9\u684c\u9762\u7684\u538b\u5f3a\u662f\u591a\u5927\uff1f
5. \u5982\u56fe\u6240\u793a\uff0c\u8fb9\u957f\u4e3a20\u5398\u7c73\u7684\u6b63\u65b9\u4f53\u7bb1\u5b50\u7684\u9876\u90e8\u56fa\u5b9a\u6709\u4e00\u622a\u9762\u79ef\u4e3a4\u5398\u7c73\u7684\u7ba1\u5b50\uff0c\u73b0\u4ece\u7ba1\u5b50\u4e0a\u65b9\u5f80\u7bb1\u5185\u704c\u6c34\uff0c\u4f7f\u7ba1\u4e2d\u7684\u6c34\u9762\u9ad8\u51fa\u7bb1\u5b50\u9876\u90e830\u5398\u7c73\uff0c
\u6c42\uff1a\uff081\uff09\u7bb1\u5b50\u548c\u7ba1\u5b50\u91cc\u6c34\u7684\u603b\u91cd\uff1b\uff082\uff09\u6c34\u5bf9\u7bb1\u5e95\u7684\u538b\u529b\uff1b\uff083\uff09\u6c34\u5bf9\u7bb1\u9876\u7684\u538b\u529b\u3002
6. \u5c06\u67d0\u7269\u4f53\u6302\u5728\u5f39\u7c27\u79e4\u4e0a\uff0c\u5f53\u7269\u4f53\u5168\u90e8\u6d78\u6ca1\u5728\u6c34\u4e2d\u65f6\uff0c\u5f39\u7c27\u79e4\u7684\u793a\u6570\u4e3a9.8\u725b\u987f\uff1b\u5982\u679c\u6b64\u7269\u4f53\u9732\u51fa\u6c34\u9762\u7684\u4f53\u79ef\u4e3a\u5176\u603b\u4f53\u79ef\u76844/5\u65f6\uff0c\u5f39\u7c27\u79e4\u793a\u6570\u4e3a19.6\u725b\u987f\u3002\u6c42\u8be5\u7269\u4f53\u7684\u4f53\u79ef\u548c\u5bc6\u5ea6\u3002
7. \u4e00\u4e2a\u4f53\u79ef\u4e3a0.001\u7c733\u7684\u7269\u5757\u653e\u5728\u6c34\u4e2d\u6f02\u6d6e\u5728\u6c34\u9762\u65f6\uff0c\u9732\u51fa\u6c34\u9762\u7684\u4f53\u79ef\u4e3a\u7269\u5757\u5168\u90e8\u4f53\u79ef\u7684 2/5 \uff0c\u82e5\u5c06\u5b83\u653e\u5165\u67d0\u79cd\u6db2\u4f53\u4e2d\uff0c\u5f53\u7ed9\u5b83\u65bd\u52a0\u5411\u4e0b\u4e3a39.2\u725b\u987f\u7684\u538b\u529b\u65f6\uff0c\u7269\u5757\u5c06\u5168\u90e8\u6d78\u5165\u67d0\u79cd\u6db2\u4f53\u4e2d\uff0c\u6c42\u7269\u5757\u7684\u5bc6\u5ea6\u53ca\u6b64\u79cd\u6db2\u4f53\u7684\u5bc6\u5ea6\u5404\u662f\u591a\u5c11\uff1f
8. \u7528\u6241\u62c5\u6311\u91cd\u7269\uff0c\u6241\u62c5\u957f1.8\u7c73\uff0c\u4e24\u7aef\u5206\u522b\u6302250\u725b\u987f\u548c200\u725b\u987f\u7684\u6c34\u6876\u3002\u95ee\u8981\u4f7f\u6241\u62c5\u6311\u5e73\uff0c\u80a9\u7684\u4f4d\u7f6e\u5e94\u5728\u54ea\u91cc\uff1f\uff08\u8ba1\u7b97\u65f6\u4e0d\u8003\u8651\u6241\u62c5\u7684\u91cd\u529b\uff09
9. \u529f\u7387\u4e3a4.9\u5343\u74e6\u7684\u62bd\u6c34\u673a\uff0c1\u5206\u949f\u80fd\u628a\u591a\u5c11\u4f53\u79ef\u7684\u6c34\u62bd\u523010\u7c73\u9ad8\u7684\u6c34\u6c60\u91cc\uff1f
10. \u7528\u4e00\u6839\u7ef3\u628a\u5982\u56fe\u6240\u793a\u7684\u4e24\u4e2a\u5b9a\u6ed1\u8f6e\u7ec4\u6210\u4e00\u6700\u7701\u529b\u7684\u6ed1\u8f6e\u7ec4\u3002\u82e5\u6bcf\u4e2a\u5b9a\u6ed1\u8f6e\u7684\u91cd\u4e3a100\u725b\u987f\uff0c\u7ef3\u7684\u6700\u5927\u627f\u53d7\u80fd\u529b\u4e3a200\u725b\u987f\u3002\uff08\u4e0d\u8ba1\u6469\u64e6\uff09
\uff081\uff09\u753b\u51fa\u6ed1\u8f6e\u7ec4\u7684\u7ed5\u7ebf\u56fe\uff1b
\uff082\uff09\u6c42\u6b64\u6ed1\u8f6e\u7ec4\u80fd\u6700\u591a\u63d0\u8d77\u591a\u91cd\u7684\u7269\u4f53\uff1f
\uff083\uff09\u82e5\u57281\u79d2\u949f\u5185\u5c06500\u725b\u7684\u91cd\u7269\u7ad6\u76f4\u63d0\u8d770.1\u7c73\uff0c\u6c42\u62c9\u529b\u7684\u529f\u7387\u662f\u591a\u5c11\uff1f
\uff084\uff09\u6c42\u63d0\u8d77500\u725b\u91cd\u7269\u65f6\uff0c\u6ed1\u8f6e\u7ec4\u7684\u673a\u68b0\u6548\u7387\u662f\u591a\u5c11\uff1f
11. \u6709\u4e00\u53ea\u523b\u5ea6\u4e0d\u51c6\u786e\u7684\u6e29\u5ea6\u8ba1\uff0c\u653e\u5728\u51b0\u6c34\u6df7\u5408\u7269\u4e2d\u7684\u6e29\u5ea6\u4e3a5\u2103\uff0c\u653e\u57281\u6807\u51c6\u5927\u6c14\u538b\u4e0b\u7684\u6cb8\u6c34\u4e2d\u7684\u6e29\u5ea6\u4e3a95\u2103\uff0c\u90a3\u4e48\u7528\u8fd9\u4e2a\u6e29\u5ea6\u8ba1\u6d4b\u5f97\u6c14\u6e29\u4e3a23\u2103\u65f6\uff0c\u5b9e\u9645\u7684\u6c14\u6e29\u5e94\u4e3a\u591a\u5c11\uff1f
12. \u5c06\u4e00\u4f53\u79ef\u4e3a40\u5398\u7c733\u7684\u94dd\u5757\uff0c\u653e\u5165\u76db\u67090.1\u5343\u514b\u6c34\u7684\u70e7\u676f\u4e2d\uff0c\u5e76\u6d78\u6ca1\u6c34\u4e2d\uff0c\u7136\u540e\u7528\u9152\u7cbe\u706f\u5bf9\u5b83\u52a0\u70ed\u3002\u52a0\u70ed\u505c\u6b62\u540e\uff0c\u7528\u6e29\u5ea6\u8ba1\u6d4b\u5f97\u6c34\u7684\u6e29\u5ea6\u662f80\u2103\u3002\u6c42\uff1a
\uff081\uff09\u6c34\u548c\u94dd\u5757\u5438\u6536\u4e86\u591a\u5c11\u70ed\u91cf\uff1f
\uff082\uff09\u52a0\u70ed\u8fc7\u7a0b\u4e2d\u71c3\u70e7\u9152\u7cbe\u653e\u51fa\u7684\u70ed\u91cf\u670920%\u88ab\u6c34\u548c\u94dd\u5757\u5438\u6536\uff0c\u6c42\u70e7\u6389\u4e86\u591a\u5c11\u9152\u7cbe\uff1f
\uff08\u94dd\u7684\u6bd4\u70ed\u662f0.88\u00d7103\u7126/\uff08\u5343\u514b\u2103\uff09\u3001\u5bc6\u5ea6\u662f2.7\u00d7103\u5343\u514b/\u7c733\uff0c\u9152\u7cbe\u7684\u71c3\u70e7\u503c\u662f3.02\u00d7107\u7126/\u5343\u514b\uff09
13. \u628a200\u514b90\u2103\u7684\u70ed\u6c34\u8ddf400\u514b\u51b7\u6c34\u6df7\u5408\uff0c\u6df7\u5408\u540e\u7684\u6e29\u5ea6\u662f30\u2103\uff0c\u6c42\u51b7\u6c34\u539f\u6765\u7684\u6e29\u5ea6\uff1f\uff08\u6df7\u5408\u8fc7\u7a0b\u4e2d\u65e0\u70ed\u91cf\u5411\u5916\u6563\u5931\uff09
14. \u4e00\u4e2a\u7535\u7089\uff0c\u63a5\u5728\u7535\u538b\u4e3a220\u4f0f\u7684\u7535\u6e90\u4e0a\uff0c\u7535\u7089\u7684\u7535\u963b\u662f22\u6b27\u59c6\uff0c\u5b83\u572810\u5206\u949f\u5185\u80fd\u628a\u8d28\u91cf\u4e3a\u591a\u5c11\u7684\u6c34\u4ece20\u2103\u70e7\u5230100\u2103\uff1f\uff08\u7535\u963b\u4e1d\u4ea7\u751f\u7684\u70ed\u91cf\u670970%\u88ab\u6c34\u5438\u6536\uff09
15. \u67d0\u706f\u6ce1\u7684\u989d\u5b9a\u7535\u538b\u662f4\u4f0f\uff0c\u6b63\u5e38\u53d1\u5149\u65f6\u7684\u7535\u6d41\u5f3a\u5ea6\u662f0.5\u5b89\u57f9\uff0c\u73b0\u63a5\u5728\u7535\u538b\u4e3a6\u4f0f\u7684\u7535\u6e90\u4e0a\uff0c\u95ee\uff1a
\uff081\uff09\u8fd9\u4e2a\u706f\u6ce1\u6b63\u5e38\u53d1\u5149\u65f6\u7684\u7535\u963b\u662f\u591a\u5927\uff1f
\uff082\uff09\u5e94\u4e32\u8054\u4e00\u4e2a\u591a\u5927\u7684\u7535\u963b\uff0c\u8be5\u706f\u6ce1\u624d\u80fd\u6b63\u5e38\u53d1\u5149\uff1f
\uff083\uff091\u5ea6\u7535\u80fd\u4f7f\u8fd9\u4e2a\u706f\u6ce1\u6b63\u5e38\u53d1\u5149\u591a\u5c11\u5c0f\u65f6\uff1f
16. \u6807\u6709\u201c220V 800W\u201d\u7684\u7528\u7535\u5668\u4e32\u8054\u4e00\u4e2a\u53d8\u963b\u5668\uff0c\u8ba9\u7528\u7535\u5668\u5728220\u4f0f\u548c200\u4f0f\u7684\u7535\u538b\u95f4\u5de5\u4f5c\u3002\u7535\u8def\u7684\u7535\u6e90\u7535\u538b\u4e3a220\u4f0f\uff0c\u6c42\uff1a\uff08\u8bbe\u7528\u7535\u5668\u7684\u7535\u963b\u662f\u4e0d\u53d8\u7684\uff09
\uff081\uff09\u7528\u7535\u5668\u7684\u7535\u963b\u591a\u5927\uff1f
\uff082\uff09\u5e94\u9009\u53d8\u963b\u8303\u56f4\u4e3a\u591a\u5927\u7684\u6ed1\u52a8\u53d8\u963b\u5668\uff1f
17. \u628a\u7535\u963bR1\u548cR2\u4e32\u8054\u540e\u63a5\u5230\u7535\u538b\u4e3a12\u4f0f\u7684\u7535\u8def\u4e0a\u65f6\uff0c\u901a\u8fc7R1\u7684\u7535\u6d41\u4e3a0.3\u5b89\uff0cR2\u4e0a\u4e24\u7aef\u7684\u7535\u538b\u4e3a4.5\u4f0f\u3002\u82e5\u5c06R1\u548cR2\u5e76\u8054\u540e\u63a5\u5230\u540c\u4e00\u7535\u8def\u4e0a\uff0c\u6c42\uff1a
\uff081\uff09\u5e76\u8054\u540e\u7535\u8def\u7684\u603b\u7535\u963b\u4e3a\u591a\u5c11\uff1f
\uff082\uff09\u901a\u8fc7R1\u3001R2\u7684\u7535\u6d41\u5f3a\u5ea6\u5404\u662f\u591a\u5c11\uff1f
18. \u4e00\u706f\u6ce1\u548c\u53d8\u963b\u5668\u4e32\u8054\uff0c\u63a5\u572854\u4f0f\u7684\u7535\u6e90\u4e0a\uff0c\u800c\u706f\u6ce1\u4e24\u7aef\u6240\u9700\u7684\u7535\u538b\u4e3a36\u4f0f\uff0c\u706f\u6ce1\u7684\u7535\u963br=10\u6b27\u3002\u6b32\u4f7f\u706f\u6ce1\u4e0a\u7535\u538b\u6070\u597d\u662f36\u4f0f\uff0c\u4e32\u8054\u7684\u53d8\u963b\u5668\u63a5\u5165\u7535\u8def\u7684\u7535\u963b\u4e1d\u7535\u963b\u4e3a\u591a\u5c11\uff1f
19. \u67d0\u7535\u706f\u6b63\u5e38\u5de5\u4f5c\u65f6\uff0c\u706f\u7684\u4e24\u7aef\u7684\u7535\u538b\u4e3a24\u4f0f\uff0c\u7535\u706f\u4e2d\u901a\u8fc7\u7684\u7535\u6d41\u4e3a0.5\u5b89\u3002\u82e5\u628a\u5b83\u63a5\u572836\u4f0f\u7684\u7535\u6e90\u4e0a\uff0c\u8981\u4f7f\u706f\u6b63\u5e38\u5de5\u4f5c\uff0c\u9700\u8981\u4e32\u8054\u4e00\u4e2a\u591a\u5927\u7684\u7535\u963b\uff1f
20. \u706f\u6ce1L1\u4e0a\u6807\u6709\u201c80\u03a9 0.1A\u201d\uff0c\u706f\u6ce1L2\u4e0a\u6807\u6709\u201c20\u03a9 0.2A\u201d\u3002\u5c06\u5b83\u4eec\u5e76\u8054\u63a5\u5728\u67d0\u7535\u6e90\u4e24\u7aef,\u5728\u4e0d\u635f\u574f\u706f\u6ce1\u7684\u60c5\u51b5\u4e0b,\u6070\u4f7f\u5176\u4e2d\u7684\u4e00\u53ea\u5c0f\u706f\u6ce1\u6b63\u5e38\u53d1\u5149\u3002\u6c42\uff1a
\uff081\uff09\u7535\u6e90\u7535\u538b\u662f\u591a\u5927\uff1f
\uff082\uff09\u6b64\u65f6\u5e72\u8def\u7535\u6d41\u662f\u591a\u5927?
21. \u5982\u56fe13\u6240\u793a\u7535\u8def\uff0c\u5df2\u77e5\u7535\u6e90\u7535\u538b\u4e3a6V\uff0cR1\u7684\u963b\u503c\u4e3a2\u03a9\uff0cR2\u7684\u963b\u503c\u4e3a3\u03a9\uff0cR3\u7684\u963b\u503c\u4e3a6\u03a9\u3002\u6c42\uff081\uff09S1\u3001S2\u90fd\u95ed\u5408\u65f6\u7535\u6d41\u8868\u7684\u793a\u6570\uff1b\uff082\uff09S1\u3001S2\u90fd\u65ad\u5f00\u65f6\u7535\u8def\u7684\u603b\u529f\u7387\u3002
\u56fe13
22. \u4e00\u706f\u6ce1\u548c\u53d8\u963b\u5668\u4e32\u8054\uff0c\u63a5\u572854\u4f0f\u7684\u7535\u6e90\u4e0a\uff0c\u800c\u706f\u6ce1\u4e24\u7aef\u6240\u9700\u7684\u7535\u538b\u4e3a36\u4f0f\uff0c\u706f\u6ce1\u7684\u7535\u963br=10\u6b27\u3002\u6b32\u4f7f\u706f\u6ce1\u4e0a\u7535\u538b\u6070\u597d\u662f36\u4f0f\uff0c\u4e32\u8054\u7684\u53d8\u963b\u5668\u63a5\u5165\u7535\u8def\u7684\u7535\u963b\u4e1d\u7535\u963b\u4e3a\u591a\u5c11\uff1f
23. \u4e0b\u56fe\u662f\u5e7f\u4e1c\u987a\u5fb7\u5e02\u4f1f\u58eb\u5fb7\u7535\u5668\u71c3\u5177\u5382\u751f\u4ea7\u7684\u7535\u70ed\u5f00\u6c34\u74f6\u7684\u94ed\u724c\u3002\u7ecf\u5b9e\u8df5\u9a8c\u8bc1\uff0c\u5f53\u5f00\u6c34\u74f6\u5185\u88c5\u6709\u4f53\u79ef\u4e3a2L\u3001\u6e29\u5ea6\u4e3a20\u2103\u7684\u6c34\u65f6\uff0c\u7535\u70ed\u5f00\u6c34\u74f6\u6b63\u5e38\u5de5\u4f5c25min\u53ef\u5c06\u6c34\u52a0\u70ed\u81f3\u6cb8\u817e\uff08\u5f53\u65f6\u6c14\u538b\u4e3a\u6807\u51c6\u5927\u6c14\u538b\uff09\u3002
\u6c42\uff1a\uff081\uff09\u7535\u70ed\u5f00\u6c34\u74f6\u5728\u70e7\u6c34\u8fc7\u7a0b\u4e2d\u6d88\u8017\u7684\u7535\u80fd\u662f\u591a\u5c11\u7126\uff1f
\uff082\uff09\u5982\u679c\u5728\u7528\u7535\u9ad8\u5cf0\u65f6\u95f4\u4f7f\u7528\uff0c\u7535\u6e90\u7684\u5b9e\u9645\u7535\u538b\u53ea\u6709198V\uff0c\u5219\u6b64\u65f6\u8be5\u7535\u70ed\u5f00\u6c34\u74f6\u7684\u5b9e\u9645\u529f\u7387\u662f\u591a\u5c11\u74e6?\uff08\u8bbe\u7535\u70ed\u5f00\u6c34\u74f6\u7684\u7535\u963b\u4e0d\u53d8\uff09
\u7535\u70ed\u5f00\u6c34\u74f6
\u578b\u53f7
WSD880
\u7535\u6e90
220V\u201450Hz
\u989d\u5b9a\u529f\u7387
700W
\u5bb9\u91cf
5.5L
24. \u5728\u56fe11\u6240\u793a\u7535\u8def\u4e2d\uff0c\u95ed\u5408\u5f00\u5173S\uff0c\u79fb\u52a8\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6ed1\u7247P\uff0c\u5f53\u7535\u538b\u8868\u7684\u793a\u6570\u4e3a6V\u65f6\uff0c\u7535\u6d41\u8868\u793a\u6570\u4e3a0.5A\uff1b\u5f53\u7535\u538b\u8868\u7684\u793a\u6570\u4e3a7.2V\u65f6\uff0c\u7535\u6d41\u8868\u793a\u6570\u4e3a0.3A\uff0c\u5219\u7535\u963bR0\u4e3a\u591a\u5c11\u03a9\uff0c\u7535\u6e90\u7535\u538b\u4e3a\u591a\u5c11V\uff0e
25. \u5982\u56fe\u6240\u793a\uff0c\u7535\u6e90\u7535\u538b\u4e0d\u53d8\uff0c\u5f53S1\u95ed\u5408\uff0cS2\u65ad\u5f00\u65f6\uff0c\u7535\u6d41\u8868\u8bfb\u6570\u662f0.4A\uff0c\u7535\u538b\u8868\u8bfb\u6570\u662f2V\uff0c\u5f53S1\u65ad\u5f00\uff0cS2\u95ed\u5408\u65f6\uff0c\u7535\u6d41\u8868\u8bfb\u6570\u4e3a0.2A,\u7535\u538b\u8868\u8bfb\u6570\u662f4V\u3002
\u6c42\uff1a\uff081\uff09R1\u3001R2\u7684\u963b\u503c
\uff082\uff09\u5b9a\u503c\u7535\u963bR\u7684\u963b\u503c\u548c\u7535\u6e90\u7535\u538b\u3002
26. \u5404\u79cd\u5bb6\u7528\u7535\u5668\u8fdb\u5165\u4e86\u666e\u901a\u5bb6\u5ead\u540e\uff0c\u6960\u6960\u540c\u5b66\u7edf\u8ba1\u51fa\u5bb6\u91cc\u73b0\u6709\u5bb6\u7528\u7535\u5668\u53ca\u5176\u989d\u5b9a\u529f\u7387\u5206\u522b\u5982\u4e0b\uff1a\uff08\u989d\u5b9a\u7535\u538b\u5747\u4e3a220\u4f0f\uff09
\u5bb6\u7528\u7535\u5668\u540d\u79f0
\u7167\u660e\u706f\u5177
\u53a8\u623f\u706f\u5177
\u53a8\u623f\u7528\u7535
\u5f69\u7535
\u6d17\u8863\u673a
\u7535\u51b0\u7bb1
\u7535\u71a8\u6597
\u989d\u5b9a\u529f\u7387\uff08\u74e6\uff09
200
250
90
225
125
700
500
\uff081\uff09\u6960\u6960\u540c\u5b66\u5bb6\u5b89\u88c5\u7684\u7535\u80fd\u8868\u5982\u56fe\u6240\u793a\uff0c\u95ee\u5979\u5bb6\u91cc\u7684\u7535\u8def\u80fd\u627f\u53d7\u7684\u7528\u7535\u5668\u7684\u6700\u5927\u529f\u7387\u662f\u591a\u5c11\uff1f\u7b80\u8981\u5199\u51fa\u8ba1\u7b97\u8fc7\u7a0b\u3002
\uff082\uff09\u6960\u6960\u5bb6\u60f3\u518d\u4e70\u4e00\u4e2a900\u74e6\u7684\u7535\u70ed\u6c34\u5668\uff0c\u8bf7\u4f60\u5206\u6790\u4e00\u4e0b\uff0c\u65b0\u589e\u52a0\u8fd9\u4e2a\u7528\u7535\u5668\u540e\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u4ec0\u4e48\u73b0\u8c61\uff1f\u901a\u8fc7\u8ba1\u7b97\u8bf4\u660e\u7406\u7531\u3002\u5979\u5bb6\u7684\u7528\u7535\u5668\u5728\u4f7f\u7528\u8fc7\u7a0b\u4e2d\u5e94\u6ce8\u610f\u4ec0\u4e48\uff1f
27. \u5982\u56fe\u6240\u793a\uff0c\u7535\u6e90\u7535\u538b\u4e3a18.5V\uff0c\u5b9a\u503c\u7535\u963bR0\uff1d10\u03a9\uff0c\u5f53S1\u3001S2\u90fd\u95ed\u5408\u4e14\u6ed1\u7247P\u7f6e\u4e8e\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u53f3\u7aef\u65f6\uff0c\u7535\u6d41\u8868\u7684\u8bfb\u6570\u662f2.22A\uff0c\u5f53S1\u3001S2\u90fd\u65ad\u5f00\u4e14\u6ed1\u7247P\u7f6e\u4e8e\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u4e2d\u70b9\u65f6\uff0c\u7535\u6d41\u8868\u8bfb\u6570\u4e3a0.5A\uff0c\u706f\u6ce1\u6b63\u5e38\u53d1\u5149\uff0e\u6c42\uff1a
\uff081\uff09\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6700\u5927\u7535\u963b\u503c\uff0e
\uff082\uff09\u706f\u6ce1\u7684\u989d\u5b9a\u529f\u7387\u53ca\u5176\u7535\u963b\u503c\uff0e
\u56fe11
28. \u996e\u6c34\u673a\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u5bb6\u7528\u7535\u5668\uff0c\u5176\u5de5\u4f5c\u539f\u7406\u53ef\u7b80\u5316\u4e3a\u5982\u56fe\u6240\u793a\u7684\u7535\u8def\uff0c\u5176\u4e2dS\u662f\u4e00\u4e2a\u6e29\u63a7\u5f00\u5173\uff0c\u4e3a\u53d1\u70ed\u677f\uff0c\u5f53\u996e\u6c34\u673a\u5904\u4e8e\u52a0\u70ed\u72b6\u6001\u65f6\uff0c\u6c34\u88ab\u8fc5\u901f\u52a0\u70ed\uff0c\u8fbe\u5230\u9884\u5b9a\u6e29\u5ea6\u65f6\uff0c\u5f00\u5173S\u81ea\u52a8\u5207\u6362\u5230\u53e6\u4e00\u6863\uff0c\u996e\u6c34\u673a\u4fbf\u5904\u4e8e\u4fdd\u6e29\u72b6\u6001\u3002
\uff081\uff09\u8bd5\u786e\u5b9a\u6e29\u63a7\u5f00\u5173S\u63a5a\u6216b\u65f6\uff0c\u996e\u6c34\u673a\u5206\u522b\u5bf9\u5e94\u7684\u5de5\u4f5c\u72b6\u6001\u3002
\uff082\uff09\u82e5\u996e\u6c34\u673a\u52a0\u70ed\u65f6\u53d1\u70ed\u677f\u7684\u529f\u7387\u4e3a550W\uff0c\u800c\u4fdd\u6e29\u65f6\u53d1\u70ed\u677f\u7684\u529f\u7387\u4e3a88W\uff0c\u6c42\u7535\u963b\u7684\u963b\u503c\uff08\u4e0d\u8003\u8651\u6e29\u5ea6\u5bf9\u963b\u503c\u7684\u5f71\u54cd\uff09\u3002
29. \u5982\u56fe\u6240\u793a\uff0cR1=20\u03a9\uff0cR2=40\u03a9\uff0c\u7535\u6e90\u7535\u538b\u3001\u706f\u4e1d\u7535\u963b\u4fdd\u6301\u4e0d\u53d8\u3002
\uff081\uff09\u5f53\u5f00\u5173S1\u3001S2\u90fd\u95ed\u5408\u65f6\uff0c\u7535\u6d41\u8868A1\u7684\u793a\u6570\u662f0.6A\uff0c\u5c0f\u706f\u6ce1\u6070\u597d\u6b63\u5e38\u53d1\u5149\uff0c\u8bf7\u6c42\u7535\u6e90\u7535\u538b\u548c\u5c0f\u706f\u6ce1\u7684\u989d\u5b9a\u7535\u538b\u5404\u662f\u591a\u5c11\uff1f
\uff082\uff09\u5f53\u5f00\u5173S1\u3001S2\u90fd\u65ad\u5f00\u65f6\uff0c\u7535\u6d41\u8868A2\u7684\u793a\u6570\u662f0.2A\uff0c\u6c42\u5c0f\u706f\u6ce1\u7684\u7535\u963b\u548c\u5b9e\u9645\u529f\u7387\uff1f
\uff083\uff09\u5c0f\u706f\u6ce1\u7684\u989d\u5b9a\u529f\u7387\u662f\u591a\u5c11\uff1f
\u3010\u8bd5\u9898\u7b54\u6848\u3011
1. 60\u79d2 2. 6000\u7c73/\u79d2 3. \u6709\u6c14\u6ce1 \u539f\u56e0\u7565
4. 9800\u5e15\u300111000\u5e15
5. 79.6\u725b\u987f \u3001196\u5e15\u3001116.4 \u5e15
6. 0.0025\u7c733\u30011400\u5343\u514b/\u7c733
7. 600\u5343\u514b/\u7c733\u30014600\u5343\u514b/\u7c733
8. \u8ddd250\u725b\u4e00\u7aef0.8\u7c73\u5904
9. 3\u7c733
10. \u56fe\u7565 900\u725b\u300160\u74e6\u300183.3%
11. 20\u2103
12. 30902.3\u7126\u8033\u30015.1\u514b
13. 0\u2103
14. 2.75\u5343\u514b
15. 8\u6b27\u59c6\u30014\u6b27\u59c6\u3001500\u5c0f\u65f6
16. U2=U1=I1R1 =0.4\u00d710=4\uff08\u4f0f\uff09
I2= U2 / R2 =4/20=0.2\uff08\u5b89\uff09
I= I1 + I2 =0.4+0.2=0.6\uff08\u5b89\uff09
17.\uff081\uff099.4\u03a9 \uff082\uff090.44A 0.6A
18. 5\u6b27
19. 30\u03a9
20. \uff081\uff094V \uff082\uff090.25
21. \u89e3\uff1aS1\u3001S2\u90fd\u95ed\u5408\u65f6\uff0cR2\u3001R3\u5e76\u8054 \u603b\u7535\u6d41I=U/ R2+ U/ R3=6/3+6/6A=3A
S1\u3001S2\u90fd\u65ad\u5f00\u65f6\uff0cR1\u3001R2\u4e32\u8054 \u603b\u529f\u7387P=U2/( R1+R2)=36/(2+3)W=7.2W
\u7b54\uff1a\u7535\u6d41\u8868\u793a\u6570\u4e3a3A\uff0c\u603b\u529f\u7387\u4e3a7.2W\u3002
22. 5\u6b27
23. \u89e3\uff1a\uff081\uff09W\uff1dPt\uff1d700W\u00d725\u00d760s\uff1d1.05\u00d7106J
\uff082\uff09\u8bbe\u989d\u5b9a\u529f\u7387\u4e3aP\uff1dU2/R \u2026\u2026\u2026\u2026\u2460
\u5b9e\u9645\u529f\u7387\u4e3aP\u5b9e\uff1dU\u5b9e2/R \u2026\u2026\u2026\u2026\u2461
\u2460/\u2461\uff1dP/P\u5b9e\uff1dU2/U\u5b9e2
\u89e3\u4e4b\u5f97:P\u5b9e\uff1dPU\u5b9e2/U2\uff1d700W\u00d7(198V)2/(220V)2\uff1d567W
24. 6 9
25. \uff081\uff095\u03a9 20\u03a9 \uff082\uff0910\u03a9\uff0c6V
26. \uff081\uff09P\u5927=UI=220\u00d710=2200\uff08W\uff09
\uff082\uff09P=P1+P2+P3+P4+P5+P6+P7=200+250+90+225+125+700+500=2090\uff08W\uff09
\u56e0\u4e3a\u7535\u80fd\u8868\u5141\u8bb8\u7684\u6700\u5927\u8d1f\u8377P\u5927=2200W,\u82e5\u589e\u52a0\u4e00\u4e2a900W\u7684\u7535\u70ed\u6c34\u5668\uff0c\u6240\u6709\u7528\u7535\u5668\u4e00\u8d77\u5de5\u4f5c\u65f6\uff0cP\u603b=2090+900=2990W\u6bd4\u6700\u5927\u8d1f\u8377\u5927\u5f88\u591a\uff0c\u4ee4\u7535\u80fd\u8868\u8fc7\u8f7d\uff0c\u6240\u4ee5\uff0c\u53ef\u80fd\u4f1a\u635f\u574f\u7535\u80fd\u8868\uff0c\u751a\u81f3\u5f15\u8d77\u706b\u707e\u3002\u5979\u5bb6\u91cc\u7684\u7528\u7535\u5668\u4f7f\u7528\u5e94\u6ce8\u610f\u4e0d\u80fd\u540c\u65f6\u4f7f\u7528\uff0c\u5e94\u5206\u5f00\u4f7f\u7528\uff0c\u6216\u8005\u8fdb\u884c\u7ebf\u8def\u6539\u9020\u540e\u518d\u6dfb\u7f6e\u7535\u70ed\u6c34\u5668\u3002
27. \u89e3\uff1a\uff081\uff09\u5f53S1\u3001S2\u90fd\u95ed\u5408\u4e14\u6ed1\u7247P\u7f6e\u4e8e\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u53f3\u7aef\u65f6\uff0c\u6d41\u8fc7R0\u7684\u7535\u6d41
\u6d41\u8fc7\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u7535\u6d41I\uff1d2.22 A\uff0d1.85 A\uff1d0.37A
\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6700\u5927\u7535\u963b\u503c\uff1a
\uff082\uff09\u5f53S1\u3001S2\u90fd\u65ad\u5f00\u4e14\u6ed1\u7247P\u7f6e\u4e8e\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u4e2d\u70b9\u65f6\uff0c\u53d8\u963b\u5668\u4e0e\u706f\u6ce1\u4e32\u8054
\u7535\u8def\u4e2d\u603b\u7535\u963b\uff1a
\u706f\u6ce1\u7684\u7535\u963b\uff1a
\u706f\u6ce1\u7684\u989d\u5b9a\u529f\u7387\uff1a
28. \uff081\uff09S\u63a5a\u4e3a\u4fdd\u6e29\u72b6\u6001\uff0cS\u63a5b\u4e3a\u52a0\u70ed\u72b6\u6001
\uff082\uff09\u52a0\u70ed\u65f6\uff0c\u5de5\u4f5c\uff0c\u65ad\u5f00\u4fdd\u6e29\u65f6\u4e0e\u4e32\u8054
29. \uff081\uff09U\u603b=12V UL=12V
\uff082\uff09RL=20\u03a9 P\u5b9e=0.8W (3)P\u989d=7.2W
（1）(3x-5y)-(6x+7y)+(9x-2y)
（2）2a-[3b-5a-(3a-5b)]
（3）(6m2n-5mn2)-6(m2n-mn2)
解：（1）(3x-5y)-(6x+7y)+(9x-2y)
=3x-5y-6x-7y+9x-2y （正确去掉括号）
=(3-6+9)x+(-5-7-2)y （合并同类项）
=6x-14y
（2）2a-[3b-5a-(3a-5b)] （应按小括号，中括号，大括号的顺序逐层去括号）
=2a-[3b-5a-3a+5b] （先去小括号）
=2a-[-8a+8b] （及时合并同类项）
=2a+8a-8b （去中括号）
=10a-8b
（3）(6m2n-5mn2)-6(m2n-mn2) （注意第二个括号前有因数6）
=6m2n-5mn2-2m2n+3mn2 （去括号与分配律同时进行）
=(6-2)m2n+(-5+3)mn2 （合并同类项）
=4m2n-2mn2
例2．已知：A=3x2-4xy+2y2，B=x2+2xy-5y2
求：（1）A+B （2）A-B （3）若2A-B+C=0，求C。
解：(1）A+B=(3x2-4xy+2y2)+(x2+2xy-5y2)
=3x2-4xy+2y2+x2+2xy-5y2（去括号）
=(3+1)x2+(-4+2)xy+(2-5)y2（合并同类项）
=4x2-2xy-3y2（按x的降幂排列）
（2）A-B=(3x2-4xy+2y2)-(x2+2xy-5y2)
=3x2-4xy+2y2-x2-2xy+5y2 （去括号）
=(3-1)x2+(-4-2)xy+(2+5)y2 （合并同类项）
=2x2-6xy+7y2 （按x的降幂排列）
（3）∵2A-B+C=0
∴C=-2A+B
=-2(3x2-4xy+2y2)+(x2+2xy-5y2)
=-6x2+8xy-4y2+x2+2xy-5y2 （去括号，注意使用分配律）
=(-6+1)x2+(8+2)xy+(-4-5)y2 （合并同类项）
=-5x2+10xy-9y2 （按x的降幂排列）
例3．计算：
（1）m2+(-mn)-n2+(-m2)-(-0.5n2)
（2）2(4an+2-an)-3an+(an+1-2an+1)-(8an+2+3an)
（3）化简：(x-y)2-(x-y)2-[(x-y)2-(x-y)2]
解：（1）m2+(-mn)-n2+(-m2)-(-0.5n2)
=m2-mn-n2-m2+n2 （去括号）
=(-)m2-mn+(-+)n2 （合并同类项）
=-m2-mn-n2 （按m的降幂排列）
（2）2(4an+2-an)-3an+(an+1-2an+1)-(8an+2+3an)
=8an+2-2an-3an-an+1-8an+2-3an （去括号）
=0+(-2-3-3)an-an+1 （合并同类项）
=-an+1-8an
（3）(x-y)2-(x-y)2-[(x-y)2-(x-y)2] [把(x-y)2看作一个整体]
=(x-y)2-(x-y)2-(x-y)2+(x-y)2 （去掉中括号）
=(1--+)(x-y)2 （“合并同类项”）
=(x-y)2
例4求3x2-2{x-5[x-3(x-2x2)-3(x2-2x)]-(x-1)}的值，其中x=2。
分析：由于已知所给的式子比较复杂，一般情况都应先化简整式，然后再代入所给数值x=-2，去括号时要注意符号，并且及时合并同类项，使运算简便。
解：原式=3x2-2{x-5[x-3x+6x2-3x2+6x]-x+1} （去小括号）
=3x2-2{x-5[3x2+4x]-x+1} （及时合并同类项）
=3x2-2{x-15x2-20x-x+1} （去中括号）
=3x2-2{-15x2-20x+1} （化简大括号里的式子）
=3x2+30x2+40x-2 （去掉大括号）
=33x2+40x-2
当x=-2时，原式=33×(-2)2+40×(-2)-2=132-80-2=50
例5．若16x3m-1y5和-x5y2n+1是同类项，求3m+2n的值。
解：∵16x3m-1y5和-x5y2n+1是同类项
∴对应x,y的次数应分别相等
∴3m-1=5且2n+1=5
∴m=2且n=2
∴3m+2n=6+4=10
本题考察我们对同类项的概念的理解。
例6．已知x+y=6，xy=-4，求: (5x-4y-3xy)-(8x-y+2xy)的值。
解：(5x-4y-3xy)-(8x-y+2xy)
=5x-4y-3xy-8x+y-2xy
=-3x-3y-5xy
=-3(x+y)-5xy
∵x+y=6，xy=-4
∴原式=-3×6-5×(-4)=-18+20=2
说明：本题化简后，发现结果可以写成-3(x+y)-5xy的形式，因而可以把x+y，xy的值代入原式即可求得最后结果，而没有必要求出x,y的值，这种思考问题的思想方法叫做整体代换，希望同学们在学习过程中，注意使用。
三、练习
（一）计算：
（1）a-(a-3b+4c)+3(-c+2b)
（2）(3x2-2xy+7)-(-4x2+5xy+6)
（3）2x2-{-3x+6+[4x2-(2x2-3x+2)]}
（二）化简
（1）a>0，b<0，|6-5b|-|3a-2b|-|6b-1|
（2）1<a<3，|1-a|+|3-a|+|a-5|
（三）当a=1，b=-3，c=1时，求代数式a2b-[a2b-(5abc-a2c)]-5abc的值。
（四）当代数式-(3x+6)2+2取得最大值时，求代数式5x-[-x2-(x+2)]的值。
（五）x2-3xy=-5，xy+y2=3，求x2-2xy+y2的值。
建议你写2a(a-b)+(b-a)。
啊？
因式分解吗？
书上有那么多！
绛旓細鈭村師寮=-3脳6-5脳(-4)=-18+20=2 璇存槑锛氭湰棰樺寲绠鍚庯紝鍙戠幇缁撴灉鍙互鍐欐垚-3(x+y)-5xy鐨勫舰寮忥紝鍥犺屽彲浠ユ妸x+y锛寈y鐨勫间唬鍏ュ師寮忓嵆鍙眰寰楁渶鍚庣粨鏋滐紝鑰屾病鏈夊繀瑕佹眰鍑簒,y鐨勫硷紝杩欑鎬濊冮棶棰樼殑鎬濇兂鏂规硶鍙仛鏁翠綋浠ｆ崲锛屽笇鏈涘悓瀛︿滑鍦ㄥ涔犺繃绋嬩腑锛屾敞鎰忎娇鐢ㄣ備笁銆佺粌涔 锛堜竴锛璁＄畻锛锛1锛塧-(a-3b+4c)...
绛旓細鍥炵瓟锛氬洜寮忓垎瑙ｄ緥:a^2-1=(a+1)(a-1) 鍗佸瓧鐩镐箻:a^2+5a+4=(a+1)(a+4) 鍏紡娉:-b+-鏍瑰彿B^2-4ac梅2a 閰嶆柟娉:a^2+2a-6=0 a^2+2a+1=7 (a+1)^2=7 渚嬮: 1銆 鎶2x^2-7x+3鍒嗚В鍥犲紡. 銆銆鍒嗘瀽:鍏堝垎瑙ｄ簩娆￠」绯绘暟,鍒嗗埆鍐欏湪鍗佸瓧浜ゅ弶绾跨殑宸︿笂瑙掑拰宸︿笅瑙,鍐嶅垎瑙ｅ父鏁伴」...
绛旓細A1A2=|X2-X1|=|6-3|=|3|=3
绛旓細瑙:a²-a+1=0 锛坅+1锛夛紙a²-a+1锛=0 鈭碼³+1=0 a³=-1 鍙︿竴绉嶆柟娉曟槸鍏堣В涓鍏冧簩娆℃柟绋嬶紝姹傚嚭a鐨勫硷紝鍐璁＄畻a³鐨勫笺備笉杩囷紝姹傚嚭鐨刟涓嶆槸瀹炴暟锛屾瘮杈冮夯鐑︺備絾缁撴灉鏄竴鏍风殑銆
绛旓細(2)a2-4=a2-22 (3)x2-4=x2-22 x2-9= x2-25= x3-9x= x3-4x= a3-ab2 12锛2008锛屽洓宸濈渷瀹滃甯傦級鍥犲紡鍒嗚В锛3y2-27= .13锛2a2-8b214锛2008锛屽緪宸炲房锛夊洜寮忓垎瑙ｏ細2x2-8=___2 ___xy 鈥搙 - y+1= 锛 锛22锛4mn(m+2n)(m-2n) 23锛2008锛屾壃宸炲競锛夊凡鐭+y=6锛...
绛旓細瑙ｏ細锛1锛夎嫢鈻矨BC鏄攼瑙掍笁瑙掑舰锛屽垯鏈a2+b2锛瀋2锛涜嫢鈻矨BC鏄挐瑙掍笁瑙掑舰锛屸垹C涓洪挐瑙掞紝鍒欐湁a2+b2锛渃2锛庣悊鐢卞涓嬶細褰撯柍ABC鏄攼瑙掍笁瑙掑舰鏃讹紝濡傚浘鈶★紝杩囩偣A浣淎D鈯C锛屽瀭瓒充负D锛岃CD涓簒锛屽垯鏈塀D=a-x锛屾牴鎹嬀鑲″畾鐞嗭紝寰梑2-x2=AD2=c2-锛坅-x锛2锛屽嵆b2-x2=c2-a2+2ax-x2锛屸埓a2+b2=c2+2ax...
绛旓細鍒濅腑鏁板璇曢绮鹃変箣璁＄畻棰锛4锛夊洜寮忓垎瑙ｅ悓姝ョ粌涔(瑙ｇ瓟棰)鍏充簬鍥犲紡鍒嗚В鍚屾缁冧範鐭ヨ瘑瀛︿範锛屼笅闈㈢殑棰樼洰闇瑕佸悓瀛︿滑璁ょ湡瀹屾垚鍝︺傞夋嫨棰 1锛庡凡鐭2+my+16鏄畬鍏ㄥ钩鏂瑰紡锛屽垯m鐨刞鍊兼槸锛 锛堿锛8 B锛4 C锛幝8 D锛幝4 2锛庝笅鍒楀椤瑰紡鑳界敤瀹屽叏骞虫柟鍏紡鍒嗚В鍥犲紡鐨勬槸锛 锛堿锛巟2-6x-9 B锛a2-16a+32 C锛巟...
绛旓細鍒濅簩涓婃暟瀛﹁绠楅200閬,瑕佺◢寰毦涓鐐圭殑锛屽彲浠ユ病绛旀 :wenku.baidu./view/e9929a3d5727a5e9856a61e4.杩欏簲璇ュ彲浠 鍒濅腑鏁板璁＄畻棰,闅句竴鐐圭殑<鏈夌瓟妗> 浣犲幓涔版湰涔︺婁簲骞翠腑鑰冧笁骞存ā鎷熴嬪氨涓嶉敊锛100閬撶◢寰毦涓浜涚殑鏁板灏忔暟璁＄畻棰樼洰锛屾ラ渶锛侊紙鍐欑瓟妗堬紒锛 鏉ヤ笅闈㈢殑缃戠珯 姹10閬撳垵浜屼笂鍐屾暟瀛﹁绠楅锛堟湁...
绛旓細甯哥敤鏁板鍏紡锛1銆佷箻娉曚笌鍥犲紡鍒 a2-b2=锛坅+b锛夛紙a-b锛 a3+b3=锛坅+b锛夛紙a2-ab+b2锛 a3-b3=锛坅-b锛坅2+ab+b2锛2銆佷笁瑙掍笉绛夊紡 |a+b|鈮a|+|b| |a-b|鈮a|+|b| |a|鈮銆=銆-b鈮鈮|a-b|鈮a|-|b| -|a|鈮鈮a| 3銆佷竴鍏冧簩娆℃柟绋嬬殑瑙 -b+鈭氾紙b2-4ac锛/2a...
绛旓細鍒濅腑鏁板璁＄畻棰,姹傝В 1涓洖绛 #娲诲姩# 浣滀负濡堝,姣嶄翰鑺備綘鏈熷緟鏀跺埌浠涔堢ぜ鐗?mbcsjs 2014-10-07 路 TA鑾峰緱瓒呰繃23.3涓囦釜璧 鐭ラ亾椤剁骇绛斾富 鍥炵瓟閲:7.6涓 閲囩撼鐜:77% 甯姪鐨勪汉:1.6浜 鎴戜篃鍘荤瓟棰樿闂釜浜洪〉 鍏虫敞 灞曞紑鍏ㄩ儴 鏇村杩介棶杩界瓟 杩介棶 澶氳阿 鏈洖绛旂敱鎻愰棶鑰呮帹鑽 宸茶禐杩 宸茶俯杩< 浣犲...
