数学，三角形，求一条直线与一段圆弧的共切圆的问题！解决后送1000分，1000分，1000分！！！ 初一数学上册计算题1000道
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\uff083\uff09\u603b\u8def\u7a0b\u4e00\u5b9a\uff0c\u5df2\u884c\u7684\u8def\u7a0b\u4e0e\u672a\u884c\u7684\u8def\u7a0b
\uff084\uff09\u5206\u6570\u503c\u4e00\u5b9a\uff0c\u5206\u6570\u7684\u5206\u5b50\u4e0e\u5206\u6bcd
\uff085\uff09\u957f\u65b9\u5f62\u7684\u957f\u4e00\u5b9a\uff0c\u5b83\u7684\u9762\u79ef\u548c\u5bbd
\uff086\uff09\u957f\u65b9\u4f53\u7684\u4f53\u79ef\u4e00\u5b9a\uff0c\u5e95\u9762\u79ef\u548c\u9ad8
\uff087\uff09\u4e00\u672c\u4e66\u7684\u603b\u9875\u6570\u4e00\u5b9a\uff0c\u770b\u7684\u5929\u6570\u4e0e\u5e73\u5747\u6bcf\u5929\u770b\u7684\u9875\u6570
\uff088\uff09\u5706\u7684\u5468\u957f\u548c\u76f4\u5f84
\uff089\uff09\u8ba2\u9605\u300a\u626c\u5b50\u665a\u62a5\u300b\uff0c\u8ba2\u7684\u4efd\u6570\u4e0e\u603b\u4ef7
\uff0810\uff09\u56fe\u4e0a\u8ddd\u79bb\u4e00\u5b9a\uff0c\u5b9e\u9645\u8ddd\u79bb\u4e0e\u6bd4\u4f8b\u5c3a
\uff0811\uff09\u5c0f\u9ea6\u7684\u51fa\u7c89\u7387\u4e00\u5b9a\uff0c\u5c0f\u9ea6\u7684\u8d28\u91cf\u4e0e\u9762\u7c89\u7684\u8d28\u91cf
\uff0812\uff09\u516d\uff081\uff09\u73ed\u540c\u5b66\u505a\u64cd\uff0c\u6bcf\u6392\u7ad9\u7684\u4eba\u6570\u4e0e\u6392\u6570
\u4e94\u3001\u4e0b\u9762\u9898\u91cc\u7684\u6570\u91cf\u6210\u4ec0\u4e48\u5173\u7cfb\uff1f\u4f60\u80fd\u5217\u51fa\u5f0f\u5b50\u8868\u793a\u6570\u91cf\u4e4b\u95f4\u7684\u76f8\u7b49\u5173\u7cfb\u5417\uff1f
\uff081\uff09\u5c0f\u7ea2\u770b\u4e00\u672c\u513f\u7ae5\u5c0f\u8bf4\uff0c\u6bcf\u5929\u770b12\u9875\uff0c10\u5929\u53ef\u4ee5\u770b\u5b8c\uff1b\u5982\u679c\u6bcf\u5929\u770b15\u9875\uff0c8\u5929\u53ef\u4ee5\u770b\u5b8c\u3002
\uff082\uff09\u4e00\u79cd\u87ba\u4e1d\u9489\uff0c20\u4e2a\u91cd30\u514b\u3002\u4e00\u76d2\u8fd9\u6837\u7684\u87ba\u4e1d\u9489\u662f600\u514b\uff0c\u4e00\u5171\u6709400\u4e2a
\u516d\u3001\u7528\u6bd4\u4f8b\u89e3\u7b54
(1)\u5370\u5237\u5382\u88c5\u8ba2\u4e00\u6279\u56fe\u4e66\uff0c\u539f\u8ba1\u5212\u6bcf\u5929\u88c5\u8ba2500\u672c\uff0c30\u5929\u5b8c\u6210\uff1b\u5b9e\u9645\u53ea\u7528\u4e8625\u5929\u5c31\u5b8c\u6210\u4e86\u4efb\u52a1\uff0c\u5b9e\u9645\u6bcf\u5929\u88c5\u8ba2\u591a\u5c11\u672c\uff1f\uff08\u7528\u6bd4\u4f8b\u65b9\u6cd5\u89e3\u7b54\uff09
(2)\u4fee\u8def\u961f\u4fee\u4e00\u6761\u957f120\u5343\u7c73\u7684\u516c\u8def\uff0c\u524d4\u5929\u4fee\u4e8620\u5343\u7c73\uff1b\u7167\u8fd9\u6837\u7684\u901f\u5ea6\uff0c\u4fee\u5b8c\u5168\u8def\u5171\u9700\u8981\u591a\u5c11\u5929\uff1f\uff08\u7528\u6bd4\u4f8b\u65b9\u6cd5\u89e3\u7b54\uff09
1\u3001\u5224\u65ad\u4e0b\u9762\u6bcf\u9898\u4e2d\u7684\u4e24\u79cd\u91cf\u6210\u4ec0\u4e48\u6bd4\u4f8b\u5173\u7cfb\uff1f
\u901f\u5ea6\u4e00\u5b9a\uff0c\u8def\u7a0b\u548c\u65f6\u95f4\uff08 \uff09 \u8def\u7a0b\u4e00\u5b9a\uff0c\u901f\u5ea6\u548c\u65f6\u95f4\uff08 \uff09
\u5355\u4ef7\u4e00\u5b9a\uff0c\u603b\u4ef7\u548c\u6570\u91cf\uff08 \uff09 \u6bcf\u5c0f\u65f6\u8015\u5730\u516c\u9877\u6570\u4e00\u5b9a\uff0c\u8015\u5730\u7684\u603b\u516c\u9877\u6570\u548c\u65f6\u95f4\uff08 \uff09 \u5168\u6821\u5b66\u751f\u505a\u64cd\uff0c\u6bcf\u884c\u7ad9\u7684\u4eba\u6570\u548c\u7ad9\u7684\u884c\u6570\uff08 \uff09
2\u3001\u6839\u636e\u6761\u4ef6\u8bf4\u51fa\u6570\u5b66\u5173\u7cfb\u5f0f\uff0c\u518d\u8bf4\u51fa\u4e24\u79cd\u76f8\u5173\u8054\u7684\u91cf\u6210\u4ec0\u4e48\u6bd4\u4f8b\uff0c\u5e76\u5217\u51fa\u76f8\u5e94\u7684\u7b49\u5f0f\u3002
\uff081\uff09\u4e00\u53f0\u673a\u5e8a5\u5c0f\u65f6\u52a0\u5de540\u4e2a\u96f6\u4ef6\uff0c\u7167\u8fd9\u6837\u8ba1\u7b97\uff0c8\u5c0f\u65f6\u52a0\u5de564\u4e2a\u3002
\uff082\uff09\u4e00\u5217\u706b\u8f66\u884c\u9a76360\u5343\u7c73\uff0c\u6bcf\u5c0f\u65f6\u884c90\u5343\u7c73\uff0c\u8981\u884c4\u5c0f\u65f6\uff1b\u6bcf\u5c0f\u65f6\u884c80\u5343\u7c73\uff0c\u8981\u884c\u7ecfX\u5c0f\u65f6\u3002
\u6307\u540d\u5b66\u751f\u53e3\u7b54\uff0c\u8001\u5e08\u677f\u4e66\u3002
\u4e8c\u3001\u521b\u8bbe\u60c5\u5883\uff0c\u63a2\u7a76\u65b0\u77e5
\u4ece\u4e0a\u9762\u53ef\u4ee5\u770b\u51fa\uff0c\u65e5\u5e38\u751f\u6d3b\u751f\u4ea7\u7684\u4e00\u4e9b\u5b9e\u9645\u95ee\u9898\uff0c\u5e94\u7528\u6bd4\u4f8b\u7684\u77e5\u8bc6\uff0c\u4e5f\u53ef\u6839\u636e\u9898\u610f\u5217\u4e00\u4e2a\u7b49\u5f0f\u3002\u6211\u4eec\u4ee5\u524d\u5b66\u8fc7\u7684\u4e00\u4e9b\u5e94\u7528\u9898\uff0c\u8fd8\u53ef\u4ee5\u5e94\u7528\u6bd4\u4f8b\u7684\u77e5\u8bc6\u6765\u89e3\u7b54\uff0c\u8fd9\u8282\u8bfe\u6211\u4eec\u5b66\u4e60\u6bd4\u4f8b\u7684\u5e94\u7528\uff08\u677f\u9898\uff09
1\u3001\u6559\u5b66\u4f8b1
\uff081\uff09\u51fa\u793a\u4f8b1\u8ba9\u5b66\u751f\u8bfb\u9898
\u7528\u5b66\u8fc7\u7684\u65b9\u6cd5\u89e3\u7b54
\u4ea4\u6d41
\u7528\u6bd4\u4f8b\u65b9\u6cd5\u89e3\uff0c
A\u9898\u4e2d\u6d89\u53ca\u54ea\u4e09\u79cd\u91cf\uff1f\uff0c\u5176\u4e2d\u54ea\u4e24\u79cd\u662f\u76f8\u5173\u8054\u7684\u91cf\uff1f
B\u54ea\u4e00\u79cd\u91cf\u662f\u4e00\u5b9a\u7684\uff1f\uff0c\u4f60\u662f\u600e\u4e48\u77e5\u9053\u7684\uff1f
C\u5b83\u4eec\u6709\u4ec0\u4e48\u5173\u7cfb\uff1f
D\u9898\u4e2d\u201c\u7167\u8fd9\u6837\u8ba1\u7b97\u201d\u5c31\u662f\u8bf4 \uff08 \uff09\u4e00\u5b9a\uff0c\u90a3\u4e48 \uff08 \uff09\u548c \uff08 \uff09\u6210\uff08 \uff09\u6bd4\u4f8b\u5173\u7cfb\uff1f\u56e0\u6b64\uff08 \uff09\u548c\uff08 \uff09\u7684 \uff08 \uff09\u662f\u76f8\u7b49\u7684\u3002
\u5c0f\u7ed3\uff1a\u8fd9\u4e00\u7c7b\u578b\u9898\uff0c\u6211\u4eec\u4e0d\u4ec5\u53ef\u7528\u8fc7\u53bb\u7684\u5f52\u4e00\u6cd5\u3001\u500d\u6bd4\u6cd5\u6765\u89e3\uff0c\u8fd8\u53ef\u7528\u6bd4\u4f8b\u65b9\u6cd5\u6765\u89e3\u3002
2\u3001\u600e\u6837\u68c0\u9a8c\u8fd9\u9053\u9898\u505a\u5f97\u662f\u5426\u6b63\u786e\u5462\uff1f
3\u3001\u53d8\u5f0f\u7ec3\u4e60\u6539\u7f16\u9898
\u51fa\u793a\u6539\u7f16\u7684\u95ee\u9898\uff0c\u8ba9\u5b66\u751f\u8bf4\u4e00\u8bf4\u9898\u610f\uff0c\u8bf7\u540c\u5b66\u4eec\u6309\u7167\u4f8b1\u7684\u65b9\u6cd5\u81ea\u5df1\u5728\u7ec3\u4e60\u672c\u4e0a\u89e3\u7b54\uff0c\u6307\u540d\u4e00\u4eba\u677f\u6f14\uff0c\u7136\u540e\u96c6\u4f53\u8ba2\u8bc1\uff0c\u6307\u540d\u8bf4\u4e00\u8bf4\u662f\u600e\u6837\u60f3\u7684\uff0c\u5217\u7b49\u5f0f\u7684\u4f9d\u636e\u662f\u4ec0\u4e48\uff1f
4\u3001\u6559\u5b66\u4f8b2
\uff081\uff09\u51fa\u793a\u4f8b2\uff0c\u5b66\u751f\u8bfb\u9898
\u63d0\u95ee\uff1a\u4ee5\u524d\u6211\u4eec\u600e\u6837\u89e3\u7b54\u7684\uff1f\uff08\u677f\u4e66\u7b97\u5f0f\uff09\u8fd9\u6837\u89e3\u7b54\u5148\u6c42\u4ec0\u4e48\uff1f\u662f\u6309\u600e\u6837\u7684\u6570\u91cf\u5173\u7cfb\u5f0f\u6765\u6c42\u7684\uff1f
\u6bd4\u4f8b\u89e3\u7b54A\uff09\u8be5\u9898\u4e2d\u4e09\u4e2a\u91cf\u6709\u4ec0\u4e48\u5173\u7cfb\uff1f\u5176\u4e2d\u54ea\u4e24\u79cd\u91cf\u662f\u76f8\u5173\u8054\u7684\u91cf\uff1fB\uff09\u9898\u4e2d\u54ea\u4e00\u79cd\u662f\u56fa\u5b9a\u4e0d\u53d8\u7684\uff1f\u4ece\u54ea\u91cc\u770b\u51fa\u6765\uff1fC\uff09\u5b83\u4eec\u6709\u4ec0\u4e48\u5173\u7cfb\uff1fD\uff09\u8fd9\u9053\u9898\u7684 \u4e00\u5b9a\uff0c \u548c \u6210 \u6bd4\u4f8b\u5173\u7cfb\uff0c\u6240\u4ee5\u4e24\u6b21\u884c\u9a76\u7684
\u548c \u7684 \u662f\u76f8\u7b49\u7684\u3002\u8c01\u80fd\u4eff\u7167\u4f8b1\u7684\u89e3\u9898\u8fc7\u7a0b\uff0c\u7528\u6bd4\u4f8b\u7684\u77e5\u8bc6\u89e3\u7b54\u4f8b2\u6765\u8bd5\u8bd5\uff0c\u6307\u540d\u677f\u6f14\uff0c\u5176\u4f59\u5b66\u751f\u505a\u5728\u7ec3\u4e60\u672c\u4e0a\uff0c
\u4ea4\u6d41
\u6307\u51fa\uff1a\u89e3\u7b54\u4f8b2\u8981\u5148\u6309\u9898\u610f\u5217\u51fa\u5173\u7cfb\u5f0f\uff0c\u5224\u65ad\u6210\u53cd\u6bd4\u4f8b\uff0c\u518d\u627e\u51fa\u4e24\u79cd\u5173\u8054\u91cf\u91cc\u76f8\u5bf9\u5e94\u7684\u6570\u503c\uff0c\u7136\u540e\u6839\u636e\u53cd\u6bd4\u4f8b\u5173\u7cfb\u91cc\u79ef\u4e00\u5b9a\uff0c\u4e5f\u5c31\u662f\u4e24\u6b21\u884c\u9a76\u76f8\u5bf9\u5e94\u6570\u503c\u7684\u4e58\u79ef\u76f8\u7b49\uff0c\u5217\u5f0f\u3002
5\u3001\u53d8\u5f0f\u7ec3\u4e60\uff08\u6539\u7f16\u9898\uff09
\u51fa\u793a\u6539\u53d8\u7684\u6761\u4ef6\u548c\u95ee\u9898\uff0c\u8ba9\u5b66\u751f\u8bf4\u4e00\u8bf4\u9898\u610f\uff0c\u6307\u540d\u4e00\u4eba\u677f\u6f14\uff0c\u5176\u4f59\u5728\u7ec3\u4e60\u672c\u4e0a\u72ec\u7acb\u89e3\u7b54\uff0c\u96c6\u4f53\u8ba2\u8bc1\uff0c\u8bf4\u8bf4\u600e\u6837\u60f3\uff0c\u6839\u636e\u4ec0\u4e48\u5217\u5f0f\u3002
\u4e09\u3001\u5f52\u7eb3\u603b\u7ed3\uff0c\u63ed\u793a\u610f\u4e49
\u60f3\u4e00\u60f3\uff0c\u5e94\u7528\u6bd4\u4f8b\u77e5\u8bc6\u89e3\u7b54\u5e94\u7528\u9898\uff0c\u662f\u600e\u6837\u60f3\u600e\u6837\u505a\u7684\uff1f
\u4e92\u76f8\u8ba8\u8bba\u4e00\u4e0b\uff0c\u7136\u540e\u544a\u8bc9\u5927\u5bb6\uff0c\u6307\u540d\u8bf4\u89e3\u9898\u601d\u8def\u3002
\u6307\u51fa\uff1a\u7528\u6bd4\u4f8b\u89e3\u7b54\u5e94\u7528\u9898\u7684\u5173\u952e\uff0c\u6b63\u786e\u627e\u51fa\u9898\u4e2d\u7684\u4e24\u79cd\u76f8\u5173\u8054\u7684\u91cf\uff0c\u5224\u65ad\u5b83\u4eec\u6210\u54ea\u79cd\u6bd4\u4f8b\u5173\u7cfb\uff0c\u7136\u540e\u6839\u636e\u6b63\u53cd\u6bd4\u4f8b\u7684\u610f\u4e49\u5217\u51fa\u65b9\u7a0b\u3002\uff08\u6b63\u786e\u5224\u65ad\u6210\u4ec0\u4e48\u6bd4\u4f8b\uff0c\u6b63\u6bd4\u4f8b\u6bd4\u503c\u76f8\u7b49\uff0c\u53cd\u6bd4\u4f8b\u4e58\u79ef\u76f8\u7b49\uff09
\u56db\u3001\u5de9\u56fa\u7ec3\u4e60\uff0c\u8003\u8003\u81ea\u5df1
\u8bf7\u4f60\u4eec\u6309\u7167\u521a\u624d\u5b66\u4e60\u4f8b\u9898\u7684\u65b9\u6cd5\u53bb\u5206\u6790\uff0c\u53ea\u8981\u5217\u51fa\u5f0f\u5b50\u5c31\u884c\u3002
1\u3001\u98df\u5802\u4e703\u6876\u6cb9\u7528780\u5143\uff0c\u7167\u8fd9\u6837\u8ba1\u7b97\uff0c\u4e708\u6876\u6cb9\u8981\u7528\u591a\u5c11\u5143\uff1f\uff08\u7528\u6bd4\u4f8b\u77e5\u8bc6\u89e3\u7b54\uff09
2\u3001\u540c\u5b66\u4eec\u505a\u5e7f\u64ad\u64cd\uff0c\u6bcf\u884c\u7ad920\u4eba\uff0c\u6b63\u597d\u7ad918\u884c\uff0c\u5982\u679c\u6bcf\u884c\u7ad924\u4eba\uff0c\u53ef\u4ee5\u7ad9\u591a\u5c11\u884c\uff1f
3\u3001\u5148\u60f3\u60f3\u4e0b\u9762\u5404\u9898\u4e2d\u5b58\u5728\u4ec0\u4e48\u6bd4\u4f8b\u5173\u7cfb\uff1f\u518d\u586b\u4e0a\u6761\u4ef6\u548c\u95ee\u9898\uff0c\u5e76\u7528\u6bd4\u4f8b\u77e5\u8bc6\u89e3\u7b54\u3002
\uff081\uff09\u738b\u5e08\u5085\u8981\u751f\u4ea7\u4e00\u6279\u96f6\u4ef6\uff0c\u6bcf\u5c0f\u65f6\u751f\u4ea750\u4e2a\uff0c\u9700\u89814\u5c0f\u65f6\u5b8c\u6210 ; \uff1f
\uff082\uff09\u738b\u5e08\u50854\u5c0f\u65f6\u751f\u4ea7\u4e86200\u4e2a\u96f6\u4ef6\uff0c\u7167\u8fd9\u6837\u8ba1\u7b97 \uff1f
4\u3001\u9009\u62e9
\uff081\uff09\u4f53\u79ef\u662f30\u7acb\u65b9\u5206\u7c73\u7684\u94a2\u4f53\u91cd150\u5343\u514b\uff0c\u91cd1200\u5343\u514b\u7684\u8fd9\u79cd\u94a2\u6750\uff0c\u4f53\u79ef\u662f\u591a\u5c11\u7acb\u65b9\u5206\u7c73\uff1f
a.150\u00d730=1200x b.30:150=1200:x c.150x=30\u00d71200 d.150:30=1200:x
\uff082\uff09\u673a\u5668\u5382\u5236\u9020\u4e00\u4e2a\u96f6\u4ef6\u6240\u7528\u7684\u65f6\u95f4\u7531\u539f\u67658\u5206\u949f\u51cf\u5c11\u52303\u5206\u949f\uff0c\u8fc7\u53bb\u6bcf\u5929\u751f\u4ea7\u96f6\u4ef6
60\u4e2a\uff0c\u73b0\u5728\u6bcf\u5929\u751f\u4ea7\u591a\u5c11\u4e2a\uff1f
a.60\u00d78=3x b.60:8=3:x c.60\u00d78=(8-3)x d.3:x=8:60
\uff083\uff09\u673a\u5668\u5382\u751f\u4ea7\u4e00\u79cd\u96f6\u4ef6\uff0c\u6bcf\u5236\u90205\u4e2a\u96f6\u4ef6\u9700\u898140\u5206\u949f\uff0c\u4e00\u5929\u5de5\u4f5c480\u5206\u949f\uff0c\u80fd\u5236\u9020\u591a\u5c11\u4e2a\u96f6\u4ef6\uff1f\uff08b\uff09
a.5\u00d740=480x b.5:40=x:480 c.40x=5\u00d7480 d.40:5=x:480
\u4e94\u3001\u5206\u5c42\u7ec3\u4e60\uff0c\u6df1\u5316\u65b0\u77e5
1\u3001\u5de5\u4eba\u88c5\u4e00\u6279\u7535\u6746\uff0c\u6bcf\u5929\u88c512\u6839\uff0c30\u5929\u53ef\u4ee5\u5b8c\u6210\uff0c\u5982\u679c\u6bcf\u5929\u591a\u88c56\u6839\uff0c\u51e0\u5929\u80fd\u591f\u5b8c\u6210\uff1f
2\u3001\u519c\u5177\u5382\u751f\u4ea7\u4e00\u6279\u5c0f\u519c\u5177\uff0c\u539f\u8ba1\u5212\u6bcf\u5929\u751f\u4ea7120\u4ef6\uff0c28\u5929\u53ef\u5b8c\u6210\u4efb\u52a1\uff0c\u5b9e\u9645\u6bcf\u5929\u751f\u4ea7\u4e86140\u4ef6\uff0c\u53ef\u4ee5\u63d0\u524d\u51e0\u5929\u5b8c\u6210\u4efb\u52a1\uff1f
\u516d\u3001\u5168\u8bfe\u603b\u7ed3\uff0c\u6e29\u6545\u77e5\u65b0
\u7528\u6bd4\u4f8b\u89e3\u5e94\u7528\u9898\u7684\u4e00\u822c\u6b65\u9aa4\u662f\u4ec0\u4e48\uff1f\uff08\u5b66\u751f\u81ea\u5df1\u7528\u8bed\u8a00\u53d9\u8ff0\uff09
\u4e00\u822c\u65b9\u6cd5\u548c\u6b65\u9aa4\uff1a
1\u3001\u5224\u65ad\u9898\u76ee\u4e2d\u4e24\u79cd\u76f8\u5173\u8054\u7684\u91cf\u662f\u6210\u6b63\u6bd4\u4f8b\u8fd8\u662f\u53cd\u6bd4\u4f8b\uff1b
2\u3001\u8bbe\u672a\u77e5\u91cf\u4e3ax\uff0c\u6ce8\u610f\u5199\u660e\u8ba1\u91cf\u5355\u4f4d\uff1b
3\u3001\u5217\u51fa\u6bd4\u4f8b\u5f0f\uff0c\u5e76\u89e3\u6bd4\u4f8b\u5f0f\uff1b
4\u3001\u68c0\u67e5\u540e\u5199\u51fa\u7b54\u6848\uff1b
5\u3001\u7279\u522b\u6ce8\u610f\u6240\u5f97\u7b54\u6848\u662f\u5426\u7b26\u5408\u5b9e\u9645\u3002
\u4e03\u3001\u8bfe\u540e\u53cd\u9988\uff0c\u6311\u6218\u96be\u9898
\u5c0f\u660e\u53d7\u8001\u5e08\u59d4\u6258\uff0c\u7f16\u4e00\u4e9b\u6bd4\u4f8b\u5e94\u7528\u9898\uff0c\u4e8e\u662f\u4ed6\u524d\u5f80\u201c\u6570\u5b66\u8d85\u5e02\u201d\u9009\u8d2d\u4e86\u4e00\u4e9b\u6761\u4ef6\uff1a
\u201c\u8ba1\u5212\u6bcf\u5929\u751f\u4ea730\u8f86\u201d\u3001\u201c\u5b9e\u9645\u6bcf\u5929\u751f\u4ea740\u8f86\u201d\u3001\u201c\u8ba1\u521225\u5929\u5b8c\u6210\u201d\u3001\u201c\u5b9e\u964520\u5929\u5b8c\u6210\u201d\u3001\u201c\u8ba1\u5212\u4e00\u5171\u751f\u4ea7\u4e86900\u8f86\u201d\u3001\u201c\u5b9e\u9645\u4e00\u5171\u751f\u4ea7\u4e861000\u8f86\u201d
\u5c0f\u660e\u9700\u8981\u4f60\u7684\u5e2e\u52a9\uff0c\u4f60\u4f1a\u600e\u6837\u7f16\u9898\uff1f
\u8fd9\u4e9b\u884c\u4e0d
\u53c2\u8003\u8d44\u6599\uff1ahttp://www.1363.cn/blog_article_details.jsp?blog_id=9177&article_id=107764
[-18]+29+[-52]+60= 19
[-3]+[-2]+[-1]+0+1+2= -3
[-301]+125+301+[-75]= 50
[-1]+[-1/2]+3/4+[-1/4]= -1
[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25
[-26.54]+[-6.14]+18.54+6.14= -8
1.125+[-17/5]+[-1/8]+[-0.6]= -3
[-98+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y 1\u3001\u6211\u56fd\u7814\u5236\u7684\u201c\u66d9\u51493000\u8d85\u7ea7\u670d\u52a1\u5668\u201d,\u5b83\u7684\u5cf0\u503c\u8ba1\u7b97\u901f\u5ea6\u8fbe\u5230403,200,000,000\u6b21/\u79d2\uff0c\u7528\u79d1\u5b66\u8ba1\u6570\u6cd5\u53ef\u8868\u793a\u4e3a ( )
A. 4032\u00d7108 B. 403.2\u00d7109 C. 4.032\u00d71011 D. 0.4032\u00d71012
2\u3001\u4e0b\u9762\u56db\u4e2a\u56fe\u5f62\u6bcf\u4e2a\u90fd\u7531\u516d\u4e2a\u76f8\u540c\u7684\u5c0f\u6b63\u65b9\u5f62\u7ec4\u6210\uff0c\u6298\u53e0\u540e\u80fd\u56f4\u6210\u6b63\u65b9\u4f53\u7684\u662f \uff08 \uff09
3\u3001\u4e0b\u5217\u5404\u7ec4\u6570\u4e2d\uff0c\u76f8\u7b49\u7684\u4e00\u7ec4\u662f \uff08 \uff09
A\uff0e-1\u548c- 4+(-3) B. |-3|\u548c-\uff08-3\uff09 C. 3x2\uff0d2x=x D. 2x+3x=5x2
4.\u5df4\u9ece\u4e0e\u5317\u4eac\u7684\u65f6\u5dee\u662f-7\uff08\u6b63\u6570\u8868\u793a\u540c\u4e00\u65f6\u523b\u6bd4\u5317\u4eac\u65e9\u7684\u65f6\u6570\uff09\uff0c\u82e5\u5317\u4eac\u65f6\u95f4\u662f7\u67082\u65e514\uff1a00
\u65f6\u6574\uff0c\u5219\u5df4\u9ece\u65f6\u95f4\u662f \uff08 \uff09
A.7\u67082\u65e521\u65f6 B.7\u67082\u65e57\u65f6 C.7\u67081\u65e57\u65f6 D.7\u67082\u65e55\u65f6
5\u3001\u56fd\u5bb6\u89c4\u5b9a\u5b58\u6b3e\u5229\u606f\u7684\u7eb3\u7a0e\u529e\u6cd5\u662f\uff1a\u5229\u606f\u7a0e=\u5229\u606f\u00d720%\uff0c\u94f6\u884c\u4e00\u5e74\u5b9a\u671f\u7684\u5229\u7387\u4e3a2.25%\uff0c\u4eca\u5c0f
\u78ca\u53d6\u51fa\u4e00\u5e74\u5230\u671f\u7684\u672c\u91d1\u53ca\u5229\u606f\u65f6\uff0c\u4ea4\u7eb3\u4e864.5\u5143\u5229\u606f\u7a0e\uff0c\u5219\u5c0f\u78ca\u4e00\u5e74\u524d\u5b58\u5165\u94f6\u884c\u7684\u94b1\u4e3a A. 1000\u5143 B. 900\u5143 C. 800\u5143 D. 700\u5143 \uff08 \uff09
6\u3001\u67d0\u79cd\u54c1\u724c\u7684\u5f69\u7535\u964d\u4ef730%\u540e\uff0c\u6bcf\u53f0\u552e\u4ef7\u4e3aa\u5143\uff0c\u5219\u8be5\u54c1\u724c\u5f69\u7535\u6bcf\u53f0\u552e\u4ef7\u4e3a \uff08 \uff09
A. 0.7a \u5143 B. 0.3a\u5143 C. \u5143 D. \u5143
7\u3001\u4e24\u6761\u76f8\u4ea4\u76f4\u7ebf\u6240\u6210\u7684\u89d2\u4e2d \uff08 \uff09
A.\u5fc5\u6709\u4e00\u4e2a\u949d\u89d2 B.\u5fc5\u6709\u4e00\u4e2a\u9510\u89d2 C.\u5fc5\u6709\u4e00\u4e2a\u4e0d\u662f\u949d\u89d2 D.\u5fc5\u6709\u4e24\u4e2a\u9510\u89d2
8\u3001\u4e3a\u4e86\u8ba9\u4eba\u4eec\u611f\u53d7\u4e22\u5f03\u5851\u6599\u888b\u5bf9\u73af\u5883\u9020\u6210\u7684\u5f71\u54cd\uff0c\u67d0\u73ed\u73af\u4fdd\u5c0f\u7ec4\u7684\u516d\u540d\u540c\u5b66\u8bb0\u5f55\u4e86\u81ea\u5df1\u5bb6\u4e2d\u4e00\u5468\u5185\u4e22\u5f03\u7684\u5851\u6599\u888b\u7684\u6570\u91cf\uff0c\u7ed3\u679c\u5982\u4e0b\uff08\u5355\u4f4d\uff1a\u4e2a\uff09\uff1a33 25 28 26 25 31.\u5982\u679c\u8be5\u73ed\u670945\u540d\u5b66\u751f\uff0c\u6839\u636e\u63d0\u4f9b\u7684\u6570\u636e\u4f30\u8ba1\u672c\u5468\u5168\u73ed\u540c\u5b66\u5404\u5bb6\u603b\u5171\u4e22\u5f03\u5851\u6599\u888b\u7684\u6570\u91cf\u7ea6\u4e3a ( )
A.900\u4e2a B.1080\u4e2a C.1260\u4e2a D.1800\u4e2a
9\u3001\u82e5\u5173\u4e8ex\u7684\u65b9\u7a0b3x+5=m\u4e0ex\uff0d2m=5\u6709\u76f8\u540c\u7684\u89e3\uff0c\u5219x\u7684\u503c\u662f ( )
A. 3 B. \u20133 C. \u20134 D. 4
10\u3001\u5df2\u77e5:\u2502m + 3\u2502+3(n-2)2=0,\u5219m n\u503c\u662f ( )
A. \u20136 B.8 C. \u20139 D. 9
11. \u4e0b\u9762\u8bf4\u6cd5\u6b63\u786e\u7684\u662f ( )
A. \u8fc7\u76f4\u7ebf\u5916\u4e00\u70b9\u53ef\u4f5c\u65e0\u6570\u6761\u76f4\u7ebf\u4e0e\u5df2\u77e5\u76f4\u7ebf\u5e73\u884c B. \u8fc7\u4e00\u70b9\u53ef\u4f5c\u65e0\u6570\u6761\u76f4\u7ebf\u4e0e\u5df2\u77e5\u76f4\u7ebf\u5782\u76f4
C. \u8fc7\u4e24\u70b9\u6709\u4e14\u53ea\u6709\u4e8c\u6761\u76f4\u7ebf D. \u4e24\u70b9\u4e4b\u95f4\uff0c\u7ebf\u6bb5\u6700\u77ed.
12\u3001\u6b63\u65b9\u4f53\u7684\u622a\u9762\u4e2d\uff0c\u8fb9\u6570\u6700\u591a\u7684\u591a\u8fb9\u5f62\u662f \uff08 \uff09
A\uff0e\u56db\u8fb9\u5f62 B.\u4e94\u8fb9\u5f62 C.\u516d\u8fb9\u5f62 D. \u4e03\u8fb9\u5f62
\u4e8c\u3001 \u586b\u7a7a\u9898
13\u3001\u7528\u8ba1\u7b97\u5668\u6c424\u00d7\uff080.2\uff0d3\uff09+\uff08-2\uff094\u65f6\uff0c\u6309\u952e\u7684\u987a\u5e8f\u662f
14\u3001\u8ba1\u7b9751\u00b036\u02ca=________\u00b0
15\u3001\u5f20\u5927\u4f2f\u4ece\u62a5\u793e\u4ee5\u6bcf\u4efd0.4\u5143\u7684\u4ef7\u683c\u8d2d\u8fdb\u4e86a\u4efd\u62a5\u7eb8\uff0c\u4ee5\u6bcf\u4efd0.5\u5143\u7684\u4ef7\u683c\u552e\u51fa\u4e86b\u4efd\u62a5\u7eb8\uff0c\u5269\u4f59\u7684\u4ee5\u6bcf\u4efd0.2\u5143\u7684\u4ef7\u683c\u9000\u56de\u62a5\u793e\uff0c\u5219\u5f20\u5927\u4f2f\u7684\u5356\u62a5\u6536\u5165\u662f___________.
16\u3001 \u5df2\u77e5\uff1a\u5982\u56fe\uff0c\u7ebf\u6bb5AB=3.8\u339d\uff0cAC=1.4\u339d\uff0cD\u4e3aCB\u7684\u4e2d\u70b9\uff0c
A C D B \u5219DB= \u339d
17\u3001\u8bbe\u957f\u65b9\u4f53\u7684\u9762\u6570\u4e3af, \u68f1\u6570\u4e3av\uff0c\u9876\u70b9\u6570\u4e3ae\uff0c\u5219f + v + e =___________.
18.\u7528\u9ed1\u767d\u4e24\u79cd\u989c\u8272\u7684\u6b63\u516d\u8fb9\u5f62\u5730\u9762\u7816\u6309\u5982\u4e0b\u6240\u793a\u7684\u89c4\u5f8b\u62fc\u6210\u82e5\u5e72\u4e2a\u56fe\u6848\uff1a
\u5219\u7b2c\uff084\uff09\u4e2a\u56fe\u6848\u4e2d\u6709\u767d\u8272\u5730\u9762\u7816________\u5757\uff1b\u7b2cn
\uff081\uff09 \uff082\uff09 \uff083\uff09 \u4e2a\u56fe\u6848\u4e2d\u6709\u767d\u8272\u5730\u9762\u7816_________\u5757.
19. \u4e00\u4e2a\u888b\u4e2d\u6709\u767d\u74035\u4e2a\uff0c\u9ec4\u74034\u4e2a\uff0c\u7ea2\u74031\u4e2a\uff08\u6bcf\u4e2a\u7403\u9664\u989c\u8272\u5916\u5176\u4f59\u90fd\u76f8\u540c\uff09\uff0c\u6478\u5230__________\u7403\u7684\u673a\u4f1a\u6700\u5c0f
20\u3001\u4e00\u6b21\u4e7010\u65a4\u9e21\u86cb\u6253\u516b\u6298\u6bd4\u6253\u4e5d\u6298\u5c11\u82b12\u5143\u94b1,\u5219\u8fd910\u65a4\u9e21\u86cb\u7684\u539f\u4ef7\u662f________\u5143.
21\u3001\u4f60\u559c\u6b22\u5403\u62c9\u9762\u5417\uff1f\u62c9\u9762\u9986\u7684\u5e08\u5085\uff0c\u7528\u4e00\u6839\u5f88\u7c97\u7684\u9762\u6761\uff0c\u628a\u4e24\u5934\u634f\u5408\u5728\u4e00\u8d77\u62c9\u4f38\uff0c\u518d\u634f\u5408\uff0c\u518d\u62c9\u4f38\uff0c\u53cd\u590d\u51e0\u6b21\uff0c\u5c31\u628a\u8fd9\u6839\u5f88\u7c97\u7684\u9762\u6761\u62c9\u6210\u4e86\u8bb8\u591a\u7ec6\u7684\u9762\u6761\uff0c\u5982\u4e0b\u9762\u7684\u8349\u56fe\u6240\u793a\uff1a
\u2026\u2026
\u7b2c\u4e00\u6b21\u634f\u5408\u540e \u7b2c\u4e8c\u6b21\u634f\u5408\u540e \u7b2c\u4e09\u6b21\u634f\u5408\u540e
\u8fd9\u6837\u634f\u5408\u5230\u7b2c \u6b21\u540e\u53ef\u62c9\u51fa128\u6839\u7ec6\u9762\u6761\u3002
22\u3001\u82e5x=1\u65f6\uff0c\u4ee3\u6570\u5f0fax3\uff0bbx\uff0b1\u7684\u503c\u4e3a5\uff0c\u5219x=- 1\u65f6\uff0c\u4ee3\u6570\u5f0fax3\uff0bbx\uff0b1\u7684\u503c\u7b49\u4e8e
\u4e09\u3001 \u89e3\u7b54\u9898
23.\u8ba1\u7b97\u2460 36\u00d7\uff08 \uff0d \uff092 \u2461\u2223 (\uff0d2)3\u00d70.5\u2223\uff0d(\uff0d1.6)2\u00f7(\uff0d2)2
\u2462 14\uff08abc\uff0d2a\uff09\uff0b3(6a\uff0d2abc) \u2463 9x\uff0b6x2\uff0d3(x\uff0d x2),\u5176\u4e2dx=\uff0d2
24.\u89e3\u65b9\u7a0b\u2460 \uff0d = 1 \u2461 (x\uff0b1)=2\uff0d (x\uff0b2)
\u2462 { [ \uff08 x+5\uff09\uff0d4]+3}=2 \u2463 \uff0d =\uff0d1.6
25. \u5728\u5de6\u4e0b\u56fe\u76849\u4e2a\u65b9\u683c\u4e2d\u5206\u522b\u586b\u5165-6\uff0c-5\uff0c-4\uff0c-1\uff0c0\uff0c1\uff0c4\uff0c5\uff0c6\u4f7f\u5f97\u6bcf\u884c\u3001\u6bcf\u5217\u3001\u659c\u5bf9\u89d2\u7684\u4e09\u4e2a\u6570\u7684\u548c\u5747\u76f8\u7b49.
26. \u5728\u4e00\u76f4\u7ebf\u4e0a\u6709A\u3001B\u3001C\u4e09\u70b9\uff0c AB=4cm\uff0cBC=0.5AB\uff0c\u70b9O\u662f\u7ebf\u6bb5AC\u7684\u4e2d\u70b9\uff0c\u6c42\u7ebf\u6bb5OB\u7684\u957f\u5ea6.
27\u67d0\u6821\u5b66\u751f\u5217\u961f\u4ee58\u5343\u7c73/ \u65f6\u7684\u901f\u5ea6\u524d\u8fdb\uff0c\u5728\u961f\u5c3e\uff0c\u6821\u957f\u8ba9\u4e00\u540d\u5b66\u751f\u8dd1\u6b65\u5230\u961f\u4f0d\u7684\u6700\u524d\u9762\u627e\u5e26\u961f\u8001\u5e08\u4f20\u8fbe\u4e00\u4e2a\u6307\u793a\uff0c\u7136\u540e\u7acb\u5373\u8fd4\u56de\u961f\u5c3e\uff0c\u8fd9\u4f4d\u5b66\u751f\u7684\u901f\u5ea6\u662f12\u5343\u7c73/\u65f6\uff0c\u4ece\u961f\u5c3e\u51fa\u53d1\u8d76\u5230\u6392\u5934\u53c8\u56de\u961f\u5c3e\u5171\u7528\u4e863.6\u5206\u949f\uff0c\u6c42\u5b66\u751f\u961f\u4f0d\u7684\u957f\uff0e
28\u67d0\u73ed\u5168\u4f53\u540c\u5b66\u5728\u201c\u732e\u7231\u5fc3\u201d\u6d3b\u52a8\u4e2d\u90fd\u6350\u4e86\u56fe\u4e66\uff0c\u6350\u4e66\u60c5\u51b5\u5982\u4e0b\u8868\uff1a
\u6bcf\u4eba\u6350\u4e66\u7684\u518c\u6570 5 10 15 20
\u76f8\u5e94\u7684\u6350\u4e66\u4eba\u6570 17 22 4 2
\u6839\u636e\u9898\u76ee\u4e2d\u6240\u7ed9\u7684\u6761\u4ef6\u56de\u7b54\u4e0b\u5217\u95ee\u9898\uff1a
\uff081\uff09\u8be5\u73ed\u7684\u5b66\u751f\u5171 \u591a\u5c11\u540d\uff1b \uff082\uff09\u5168\u73ed\u4e00\u5171\u6350\u4e86 \u518c\u56fe\u4e66\uff1b
\uff083\uff09\u5c06\u4e0a\u9762\u7684\u6570\u636e\u6210\u5236\u4f5c\u9002\u5f53\u7684\u7edf\u8ba1\u56fe\u3002
29.\u661f\u661f\u679c\u6c41\u5e97\u4e2d\u7684A\u79cd\u679c\u6c41\u6bd4B\u79cd\u679c\u6c41\u8d351\u5143\uff0c\u5c0f\u5f6c\u548c\u540c\u5b66\u8981\u4e863 \u676fB\u79cd\u679c\u6c41\u30012\u676fA\u79cd\u679c\u6c41\uff0c\u4e00\u5171\u82b1\u4e8616\u5143\u3002A\u79cd\u679c\u6c41\u3001B\u79cd\u679c\u6c41\u7684\u5355\u4ef7\u5206\u522b\u662f\u591a\u5c11\u5143\uff1f
30.\u201c\u4e2d\u5546\u201d\u8fd1\u65e5\u63a8\u51fa\u201c\u4e70200\u5143\u900180\u5143\u201d\u7684\u916c\u5bbe\u6d3b\u52a8\uff0c\u73b0\u6709\u4e00\u987e\u5ba2\u8d2d\u4e70\u4e86200\u5143\u7684\u670d\u88c5\uff0c\u5f97\u523080\u5143\u7684\u8d2d\u7269\u8d60\u5238\uff08\u53ef\u5728\u5546\u573a\u901a\u7528\uff0c\u4f46\u4e0d\u80fd\u6362\u94b1\uff09\uff0c\u5f53\u8fd9\u540d\u987e\u5ba2\u5728\u8d2d\u4e70\u8fd9\u5957\u670d\u88c5\u65f6\uff0c\u4e00\u552e\u8d27\u5458\u5bf9\u987e\u5ba2\u8bf4\uff1a\u201c\u916c\u5bbe\u6d3b\u52a8\u4e2d\u8d2d\u4e70\u5546\u54c1\u6bd4\u8f83\u4fbf\u5b9c\uff0c\u76f8\u5f53\u4e8e\u62536\u6298\uff0c\u5373 100%=60%.\u201d\u4ed6\u7684\u8bf4\u6cd5\u5bf9\u5417\uff1f
31.\u67d0\u6750\u6599\u4f9b\u5e94\u5546\u5bf9\u987e\u5ba2\u5b9e\u884c\u5982\u4e0b\u4f18\u60e0\u529e\u6cd5\uff1a\u4e00\u6b21\u8d2d\u4e70\u91d1\u989d\u4e0d\u8d85\u8fc71\u4e07\u5143\uff0c\u4e0d\u4e88\u4f18\u60e0\uff1b\u4e00\u6b21\u8d2d\u4e70\u8d85
\u8fc71\u4e07\u5143\uff0c\u4f46\u4e0d\u8d85\u8fc73\u4e07\u5143\uff0c\u7ed9\u4e889\u6298\u4f18\u60e0\uff1b\u4e00\u6b21\u8d2d\u4e70\u8d85\u8fc73\u4e07\u5143\u7684\uff0c\u5176\u4e2d3\u4e07\u51439\u6298\u4f18\u60e0\uff0c\u8d85
\u8fc73\u4e07\u5143\u7684\u90e8\u52068\u6298\u4f18\u60e0\u3002\u67d0\u5382\u56e0\u5e93\u5bb9\u539f\u56e0\uff0c\u7b2c\u4e00\u6b21\u5728\u8be5\u4f9b\u5e94\u5546\u5904\u8d2d\u4e70\u6750\u6599\u4ed8\u6b3e7800\u5143\uff0c\u7b2c\u4e8c\u6b21
\u8d2d\u4e70\u4ed8\u6b3e26100\u5143\uff0c\u5982\u679c\u4ed6\u662f\u4e00\u6b21\u8d2d\u4e70\u540c\u6837\u6570\u91cf\u7684\u6750\u6599\uff0c\u53ef\u5c11\u4ed8\u91d1\u989d\u591a\u5c11\u5143\uff1f
\u4e00\u3001\u586b\u7a7a\u9898\uff08\u6bcf\u5c0f\u98983\u5206\uff0c\u517124\u5206\uff09
1.\uff08\uff0d1\uff092002\uff0d\uff08\uff0d1\uff092003=_________________.
\u7b54\u6848\uff1a2
2.\u5df2\u77e5\u67d0\u6570\u7684 \u6bd4\u5b83\u5927 \uff0c\u82e5\u8bbe\u67d0\u6570\u4e3ax\uff0c\u5219\u53ef\u5217\u65b9\u7a0b_______________.
\u7b54\u6848\uff1a x=x+
3.\u5982\u56fe1\uff0c\u70b9A\u3001B\u3001C\u3001D\u5728\u76f4\u7ebfl\u4e0a.\u5219BC=_________\uff0dCD\uff0cAB+________+CD=AD\uff1b\u82e5AB=BC=CD\uff0c\u5219AB=________BD.
\u56fe1
\u7b54\u6848\uff1aBD\uff0cBC\uff0c
4.\u82e5\u2220\u03b1=41\u00b032\u2032\uff0c\u5219\u5b83\u7684\u4f59\u89d2\u662f____________\uff0c\u5b83\u7684\u8865\u89d2\u662f__________.
\u7b54\u6848\uff1a48\u00b028\u2032\uff0c138\u00b028\u2032
5.\u5982\u56fe2\uff0c\u6c42\u4e0b\u5217\u5404\u89d2\uff1a\u22201=___________,\u22202=___________,\u22203=___________.
\u56fe2
\u7b54\u6848\uff1a62.5\u00b0\uff0c25\u00b0\uff0c130\u00b0
6.\u4e24\u6761\u76f4\u7ebf\u76f8\u4ea4\uff0c\u6709_____________\u4e2a\u4ea4\u70b9\uff1b\u4e09\u6761\u76f4\u7ebf\u4e24\u4e24\u76f8\u4ea4\u6700\u591a\u6709_____________\u4e2a\u4ea4\u70b9\uff0c\u6700\u5c11\u6709_____________\u4e2a\u4ea4\u70b9.
\u7b54\u6848\uff1a\u4e14\u53ea\u6709\u4e00\uff0c\u4e09\uff0c\u4e00
7.38\u00b012\u2032=_____________\u00b0\uff0c67.5\u00b0=__________\u00b0___________\u2032.
\u7b54\u6848\uff1a38.2\uff0c67\uff0c30
8.\u5982\u679c x2\uff0d3x=1\u662f\u5173\u4e8ex\u7684\u4e00\u5143\u4e00\u6b21\u65b9\u7a0b\uff0c\u5219a=_________________.
\u7b54\u6848\uff1a
\u4e8c\u3001\u9009\u62e9\u9898\uff1a\uff08\u6bcf\u5c0f\u98983\u5206\uff0c\u517124\u5206\uff09
9.\u4e0b\u5217\u8bf4\u6cd5\u4e2d\uff0c\u6b63\u786e\u7684\u662f
A.\uff5ca\uff5c\u4e0d\u662f\u8d1f\u6570 B.\uff0da\u662f\u8d1f\u6570
C.\uff0d\uff08\uff0da\uff09\u4e00\u5b9a\u662f\u6b63\u6570 D. \u4e0d\u662f\u6574\u6570
\u7b54\u6848\uff1aA.
10.\u5e73\u9762\u4e0a\u6709\u4efb\u610f\u4e09\u70b9\uff0c\u7ecf\u8fc7\u5176\u4e2d\u4e24\u70b9\u753b\u4e00\u6761\u76f4\u7ebf\uff0c\u5171\u53ef\u4ee5\u753b
A.\u4e00\u6761\u76f4\u7ebf B.\u4e8c\u6761\u76f4\u7ebf C.\u4e09\u6761\u76f4\u7ebf D.\u4e00\u6761\u6216\u4e09\u6761\u76f4\u7ebf
\u7b54\u6848\uff1aD.
11.\u4e0b\u5217\u753b\u56fe\u8bed\u53e5\u4e2d\uff0c\u6b63\u786e\u7684\u662f
A.\u753b\u5c04\u7ebfOP=3 cm B.\u8fde\u7ed3A\u3001B\u4e24\u70b9
C.\u753b\u51faA\u3001B\u4e24\u70b9\u7684\u4e2d\u70b9 D.\u753b\u51faA\u3001B\u4e24\u70b9\u7684\u8ddd\u79bb
\u7b54\u6848\uff1aB.
12.\u4e0b\u5217\u56fe\u5f62\u4e2d\u80fd\u6298\u6210\u6b63\u65b9\u4f53\u7684\u6709
\u56fe3
A.1\u4e2a B.2\u4e2a C.3\u4e2a D.4\u4e2a
\u7b54\u6848\uff1aD.
13.\u4e0b\u5217\u56fe\u5f62\u662f\uff0c\u662f\u5de6\u8fb9\u56fe\u5f62\u7ed5\u76f4\u7ebfl\u65cb\u8f6c\u4e00\u5468\u540e\u5f97\u5230\u7684\u662f
\u56fe4
\u7b54\u6848\uff1aD.
14.\u56fe5\u662f\u67d0\u6751\u519c\u4f5c\u7269\u7edf\u8ba1\u56fe\uff0c\u5176\u4e2d\u6c34\u7a3b\u6240\u5360\u7684\u6bd4\u4f8b\u662f
\u56fe5
A.40% B.72% C.48% D.52%
\u7b54\u6848\uff1aC.
15.\u4e0b\u5217\u8bf4\u6cd5\uff0c\u6b63\u786e\u7684\u662f
\u2460\u6240\u6709\u7684\u76f4\u89d2\u90fd\u76f8\u7b49 \u2461\u6240\u6709\u7684\u4f59\u89d2\u90fd\u76f8\u7b49 \u2462\u7b49\u89d2\u7684\u8865\u89d2\u76f8\u7b49 \u2463\u76f8\u7b49\u7684\u89d2\u662f\u76f4\u89d2.\u5176\u4e2d\u6b63\u786e\u7684\u662f
A.\u2460\u2461 B.\u2460\u2462 C.\u2461\u2462 D.\u2462\u2463
\u7b54\u6848\uff1aB.
16.\u82e5\uff5cx\uff0d \uff5c+\uff082y+1\uff092=0\uff0c\u5219x2+ y2\u7684\u503c\u662f
A. B.
C.\uff0d D.\uff0d
\u7b54\u6848\uff1aB.
\u4e09\u3001\u89e3\u7b54\u4e0b\u5217\u5404\u9898
17.\u8ba1\u7b97\u9898\uff08\u6bcf\u5c0f\u98983\u5206\uff0c\u517112\u5206\uff09
\uff081\uff09\uff08\uff0d \uff09\u00d7\uff08\uff0d1 \uff09\u00f7\uff08\uff0d1 \uff09 \uff082\uff0932\u00f7\uff08\uff0d2\uff093+\uff08\uff0d2\uff093\u00d7\uff08\uff0d \uff09\uff0d22
\uff083\uff09\uff08 \uff0d \uff09\u00f7\uff08 \uff0d \uff092\u00f7\uff08\uff0d6\uff092\uff0d\uff08\uff0d \uff092
\uff084\uff091 \u00d7\u30143\u00d7\uff08\uff0d \uff092\uff0d1\u3015\uff0d \u3014\uff08\uff0d2\uff092\uff0d\uff084.5\uff09\u00f73\u3015
\u7b54\u6848\uff1a\uff081\uff09\uff0d1 \uff082\uff09\uff0d2 \uff083\uff09\uff0d \uff084\uff09\uff0d
18.\u89e3\u65b9\u7a0b\uff1a\uff08\u6bcf\u5c0f\u98985\u5206\uff0c\u517110\u5206\uff09
\uff081\uff09 \u3014 \uff08 x\uff0d \uff09\uff0d8\u3015= x+1
\uff082\uff09 \uff0d \uff0d =0
\u7b54\u6848\uff1a\uff081\uff09x=\uff0d \uff082\uff09x=\uff0d
19.\uff086\u5206\uff09\u5982\u56fe6\uff0c\u5df2\u77e5AOB\u4e3a\u76f4\u7ebf\uff0cOC\u5e73\u5206\u2220AOD\uff0c\u2220BOD=50\u00b0\uff0c\u6c42\u2220AOC\u7684\u5ea6\u6570.
\u56fe6
\u7b54\u6848\uff1a65\u00b0
20.\uff086\u5206\uff09\u4e00\u4e2a\u89d2\u7684\u4f59\u89d2\u76843\u500d\u6bd4\u8fd9\u4e2a\u89d2\u7684\u8865\u89d2\u592718\u00b0\uff0c\u6c42\u8fd9\u4e2a\u89d2\u7684\u5ea6\u6570.
\u7b54\u6848\uff1a36\u00b0
21.\uff086\u5206\uff09\u5236\u4f5c\u9002\u5f53\u7684\u7edf\u8ba1\u56fe\u8868\u793a\u4e0b\u8868\u6570\u636e\uff1a
1949\u5e74\u4ee5\u540e\u6211\u56fd\u5386\u6b21\u4eba\u53e3\u666e\u67e5\u60c5\u51b5
\u5e74\u4efd 1953 1964 1982 1990 2000
\u4eba\u53e3\uff08\u4ebf\uff09 5.94 6.95 10.08 11.34 12.95
\u7b54\u6848\uff1a\u53ef\u5236\u4f5c\u6761\u5f62\u7edf\u8ba1\u56fe \uff08\u7565\uff09.
22.\uff0812\u5206\uff09\u4e00\u5217\u5ba2\u8f66\u957f200 m\uff0c\u4e00\u5217\u8d27\u8f66\u957f280 m\uff0c\u5728\u5e73\u884c\u7684\u8f68\u9053\u4e0a\u76f8\u5411\u884c\u9a76\uff0c\u4ece\u4e24\u8f66\u5934\u76f8\u9047\u5230\u4e24\u8f66\u5c3e\u76f8\u79bb\u7ecf\u8fc718 s\uff0c\u5df2\u77e5\u5ba2\u8f66\u4e0e\u8d27\u8f66\u7684\u901f\u5ea6\u4e4b\u6bd4\u662f5\u22363\uff0c\u95ee\u4e24\u8f66\u6bcf\u79d2\u5404\u884c\u9a76\u591a\u5c11\u7c73?
\u89e3\uff1a\u8bbe\u5ba2\u8f66\u7684\u901f\u5ea6\u662f5x\uff0c\u5219\u8d27\u8f66\u901f\u5ea6\u4e3a3x.\u6839\u636e\u9898\u610f\uff0c\u5f97
18\uff085x+3x\uff09=200+280.
\u89e3\u5f97x= \uff0c\u5373\u5ba2\u8f66\u7684\u901f\u5ea6\u662f m/s.\u8d27\u8f66\u7684\u901f\u5ea6\u662f10 m/s75\u00f7\u3014138\u00f7\uff08100-54\uff09\u3015 85\u00d7(95\uff0d1440\u00f724)
80400\uff0d(4300\uff0b870\u00f715) 240\u00d778\u00f7\uff08154-115\uff09
1437\u00d727\uff0b27\u00d7563 \u301475-\uff0812+18\uff09\u3015\u00f715
2160\u00f7\u3014\uff0883-79\uff09\u00d718\u3015 280\uff0b840\u00f724\u00d75
325\u00f713\u00d7(266\uff0d250) 85\u00d7(95\uff0d1440\u00f724)
58870\u00f7(105\uff0b20\u00d72) 1437\u00d727\uff0b27\u00d7563
81432\u00f7(13\u00d752\uff0b78) [37.85-\uff087.85+6.4\uff09] \u00d730
156\u00d7[(17.7-7.2)\u00f73] \uff08947\uff0d599\uff09\uff0b76\u00d764
36\u00d7(913\uff0d276\u00f723) [192\uff0d\uff0854\uff0b38\uff09]\u00d767
[\uff087.1-5.6\uff09\u00d70.9-1.15]\u00f72.5 81432\u00f7(13\u00d752\uff0b78)
5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62] \uff08947\uff0d599\uff09\uff0b76\u00d764 60\uff0d(9.5\uff0b28.9)]\u00f70.18 2.881\u00f70.43\uff0d0.24\u00d73.5 20\u00d7[(2.44\uff0d1.8)\u00f70.4\uff0b0.15] 28-(3.4 1.25\u00d72.4) 0.8\u00d7\u301415.5-(3.21 5.79)\u3015 \uff0831.8 3.2\u00d74\uff09\u00f75 194\uff0d64.8\u00f71.8\u00d70.9 36.72\u00f74.25\u00d79.9 3.416\u00f7\uff080.016\u00d735\uff09 0.8\u00d7[(10\uff0d6.76)\u00f71.2]
\uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09 (6.8-6.8\u00d70.55)\u00f78.5
0.12\u00d7 4.8\u00f70.12\u00d74.8 \uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
812-700\u00f7\uff089+31\u00d711\uff09 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
85+14\u00d7\uff0814+208\u00f726\uff09 120-36\u00d74\u00f718+35
\uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09 9.72\u00d71.6-18.305\u00f77
4/7\u00f7[1/3\u00d7\uff083/5-3/10\uff09] \uff084/5+1/4\uff09\u00f77/3+7/10
12.78\uff0d0\u00f7\uff08 13.4\uff0b156.6 \uff09 37.812-700\u00f7\uff089+31\u00d711\uff09 \uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09 3.2\u00d7\uff081.5+2.5\uff09\u00f71.6
85+14\u00d7\uff0814+208\u00f726\uff09 \uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
(6.8-6.8\u00d70.55)\u00f78.5 \uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09
0.12\u00d7 4.8\u00f70.12\u00d74.8 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
120-36\u00d74\u00f718+35 10.15-10.75\u00d70.4-5.7
5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74 347+45\u00d72-4160\u00f752
32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5 87\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
[\uff087.1-5.6\uff09\u00d70.9-1.15] \u00f72.5 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
5.4\u00f7[2.6\u00d7\uff083.7-2.9\uff09+0.62] 12\u00d76\u00f7\uff0812-7.2\uff09-6
3.2\u00d76+\uff081.5+2.5\uff09\u00f71.6 \uff083.2\u00d71.5+2.5\uff09\u00f71.6
5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
33.02\uff0d\uff08148.4\uff0d90.85\uff09\u00f72.5
1)23+(-73)
(2)(-84)+(-49)
(3)7+(-2.04)
(4)4.23+(-7.57)
(5)(-7/3)+(-7/6)
(6)9/4+(-3/2)
(7)3.75+(2.25)+5/4
(8)-3.75+(+5/4)+(-1.5)
(9)(-17/4)+(-10/3)+(+13/3)+(11/3)
(10)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(11)(+1.3)-(+17/7)
(12)(-2)-(+2/3)
(13)|(-7.2)-(-6.3)+(1.1)|
(14)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(15)(-2/199)*(-7/6-3/2+8/3)
(16)4a)*(-3b)*(5c)*1/6
1. 3/7 \u00d7 49/9 - 4/3
2. 8/9 \u00d7 15/36 + 1/27
3. 12\u00d7 5/6 \u2013 2/9 \u00d73
4. 8\u00d7 5/4 + 1/4
5. 6\u00f7 3/8 \u2013 3/8 \u00f76
6. 4/7 \u00d7 5/9 + 3/7 \u00d7 5/9
7. 5/2 -\uff08 3/2 + 4/5 \uff09
8. 7/8 + \uff08 1/8 + 1/9 \uff09
9. 9 \u00d7 5/6 + 5/6
10. 3/4 \u00d7 8/9 - 1/3
0.12\u03c7\uff0b1.8\u00d70.9=7.2 (9\uff0d5\u03c7)\u00d70.3=1.02 6.4\u03c7-\u03c7=28+4.4
11. 7 \u00d7 5/49 + 3/14
12. 6 \u00d7\uff08 1/2 + 2/3 \uff09
13. 8 \u00d7 4/5 + 8 \u00d7 11/5
14. 31 \u00d7 5/6 \u2013 5/6
15. 9/7 - \uff08 2/7 \u2013 10/21 \uff09
16. 5/9 \u00d7 18 \u2013 14 \u00d7 2/7
17. 4/5 \u00d7 25/16 + 2/3 \u00d7 3/4
18. 14 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
19. 17/32 \u2013 3/4 \u00d7 9/24
20. 3 \u00d7 2/9 + 1/3
21. 5/7 \u00d7 3/25 + 3/7
22. 3/14 \u00d7\u00d7 2/3 + 1/6
23. 1/5 \u00d7 2/3 + 5/6
24. 9/22 + 1/11 \u00f7 1/2
25. 5/3 \u00d7 11/5 + 4/3
26. 45 \u00d7 2/3 + 1/3 \u00d7 15
27. 7/19 + 12/19 \u00d7 5/6
28. 1/4 + 3/4 \u00f7 2/3
29. 8/7 \u00d7 21/16 + 1/2
30. 101 \u00d7 1/5 \u2013 1/5 \u00d7 21
31.50\uff0b160\u00f740 \uff0858+370\uff09\u00f7\uff0864-45\uff09
32.120-144\u00f718+35
33.347+45\u00d72-4160\u00f752
34\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
35.95\u00f7\uff0864-45\uff09
36.178-145\u00f75\u00d76+42 420+580-64\u00d721\u00f728
37.812-700\u00f7\uff089+31\u00d711\uff09 \uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09
38.85+14\u00d7\uff0814+208\u00f726\uff09
39.\uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09
40.120-36\u00d74\u00f718+35
41.\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
42.(6.8-6.8\u00d70.55)\u00f78.5
43.0.12\u00d7 4.8\u00f70.12\u00d74.8
44.\uff083.2\u00d71.5+2.5\uff09\u00f71.6 \uff082\uff093.2\u00d7\uff081.5+2.5\uff09\u00f71.6
45.6-1.6\u00f74= 5.38+7.85-5.37=
46.7.2\u00f70.8-1.2\u00d75= 6-1.19\u00d73-0.43=
47.6.5\u00d7\uff084.8-1.2\u00d74\uff09= 0.68\u00d71.9+0.32\u00d71.9
48.10.15-10.75\u00d70.4-5.7
49.5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
50.32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
51.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4\uff09
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10
1.
a^3-2b^3+ab(2a-b)
=a^3+2a^2b-2b^3-ab^2
=a^2(a+2b)-b^2(2b+a)
=(a+2b)(a^2-b^2)
=(a+2b)(a+b)(a-b)
2.
(x^2+y^2)^2-4y(x^2+y^2)+4y^2
=(x^2+y^2-2y)^2
3.
(x^2+2x)^2+3(x^2+2x)+x^2+2x+3
=(x^2+2x)^2+4(x^2+2x)+3
=(x^2+2x+3)(x^2+2x+1)
=(x^2+2x+3)(x+1)^2
4.
(a+1)(a+2)+(2a+1)(a-2)-12
=a^2+3a+2+2a^2-3a-2-12
=3a^2-12
=3(a+2)(a-2)
5.
x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2
=[x(y+z)-y(x-z)]^2
=(xz+yz)^2
=z^2(x+y)^2
6.
3(a+2)^2+28(a+2)-20
=[3(a+2)-2][(a+2)+10]
=(3a+4)(a+12)
7.
(a+b)^2-(b-c)^2+a^2-c^2
=(a+b)^2-c^2+a^2-(b-c)^2
=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)
=(a+b-c)(a+b+c+a-b+c)
=2(a+b-c)(a+c)
8.
x(x+1)(x^2+x-1)-2
=(x^2+x)(x^2+x-1)-2
=(x^2+x)^2-(x^2+x)-2
=(x^2+x-2)(x^2+x+1)
=(x+2)(x-1)(x^2+x+1)
1. 3/7 \u00d7 49/9 - 4/3
2. 8/9 \u00d7 15/36 + 1/27
3. 12\u00d7 5/6 \u2013 2/9 \u00d73
4. 8\u00d7 5/4 + 1/4
5. 6\u00f7 3/8 \u2013 3/8 \u00f76
6. 4/7 \u00d7 5/9 + 3/7 \u00d7 5/9
7. 5/2 -\uff08 3/2 + 4/5 \uff09
8. 7/8 + \uff08 1/8 + 1/9 \uff09
9. 9 \u00d7 5/6 + 5/6
10. 3/4 \u00d7 8/9 - 1/3
0.12\u03c7\uff0b1.8\u00d70.9=7.2 (9\uff0d5\u03c7)\u00d70.3=1.02 6.4\u03c7-\u03c7=28+4.4
11. 7 \u00d7 5/49 + 3/14
12. 6 \u00d7\uff08 1/2 + 2/3 \uff09
13. 8 \u00d7 4/5 + 8 \u00d7 11/5
14. 31 \u00d7 5/6 \u2013 5/6
15. 9/7 - \uff08 2/7 \u2013 10/21 \uff09
16. 5/9 \u00d7 18 \u2013 14 \u00d7 2/7
17. 4/5 \u00d7 25/16 + 2/3 \u00d7 3/4
18. 14 \u00d7 8/7 \u2013 5/6 \u00d7 12/15
19. 17/32 \u2013 3/4 \u00d7 9/24
20. 3 \u00d7 2/9 + 1/3
21. 5/7 \u00d7 3/25 + 3/7
22. 3/14 \u00d7\u00d7 2/3 + 1/6
23. 1/5 \u00d7 2/3 + 5/6
24. 9/22 + 1/11 \u00f7 1/2
25. 5/3 \u00d7 11/5 + 4/3
26. 45 \u00d7 2/3 + 1/3 \u00d7 15
27. 7/19 + 12/19 \u00d7 5/6
28. 1/4 + 3/4 \u00f7 2/3
29. 8/7 \u00d7 21/16 + 1/2
30. 101 \u00d7 1/5 \u2013 1/5 \u00d7 21
31.50\uff0b160\u00f740 \uff0858+370\uff09\u00f7\uff0864-45\uff09
32.120-144\u00f718+35
33.347+45\u00d72-4160\u00f752
34\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
35.95\u00f7\uff0864-45\uff09
36.178-145\u00f75\u00d76+42 420+580-64\u00d721\u00f728
37.812-700\u00f7\uff089+31\u00d711\uff09 \uff08136+64\uff09\u00d7\uff0865-345\u00f723\uff09
38.85+14\u00d7\uff0814+208\u00f726\uff09
39.\uff08284+16\uff09\u00d7\uff08512-8208\u00f718\uff09
40.120-36\u00d74\u00f718+35
41.\uff0858+37\uff09\u00f7\uff0864-9\u00d75\uff09
42.(6.8-6.8\u00d70.55)\u00f78.5
43.0.12\u00d7 4.8\u00f70.12\u00d74.8
44.\uff083.2\u00d71.5+2.5\uff09\u00f71.6 \uff082\uff093.2\u00d7\uff081.5+2.5\uff09\u00f71.6
45.6-1.6\u00f74= 5.38+7.85-5.37=
46.7.2\u00f70.8-1.2\u00d75= 6-1.19\u00d73-0.43=
47.6.5\u00d7\uff084.8-1.2\u00d74\uff09= 0.68\u00d71.9+0.32\u00d71.9
48.10.15-10.75\u00d70.4-5.7
49.5.8\u00d7\uff083.87-0.13\uff09+4.2\u00d73.74
50.32.52-\uff086+9.728\u00f73.2\uff09\u00d72.5
51.-5+58+13+90+78-(-56)+50
52.-7*2-57/(3
53.(-7)*2/(1/3)+79/(3+6/4\uff09
54.123+456+789+98/(-4)
55.369/33-(-54-31/15.5)
56.39+{3x[42/2x(3x8)]}
57.9x8x7/5x(4+6)
58.11x22/(4+12/2)
59.94+(-60)/10
1.
a^3-2b^3+ab(2a-b)
=a^3+2a^2b-2b^3-ab^2
=a^2(a+2b)-b^2(2b+a)
=(a+2b)(a^2-b^2)
=(a+2b)(a+b)(a-b)
2.
(x^2+y^2)^2-4y(x^2+y^2)+4y^2
=(x^2+y^2-2y)^2
3.
(x^2+2x)^2+3(x^2+2x)+x^2+2x+3
=(x^2+2x)^2+4(x^2+2x)+3
=(x^2+2x+3)(x^2+2x+1)
=(x^2+2x+3)(x+1)^2
4.
(a+1)(a+2)+(2a+1)(a-2)-12
=a^2+3a+2+2a^2-3a-2-12
=3a^2-12
=3(a+2)(a-2)
5.
x^2(y+z)^2-2xy(x-z)(y+z)+y^2(x-z)^2
=[x(y+z)-y(x-z)]^2
=(xz+yz)^2
=z^2(x+y)^2
6.
3(a+2)^2+28(a+2)-20
=[3(a+2)-2][(a+2)+10]
=(3a+4)(a+12)
7.
(a+b)^2-(b-c)^2+a^2-c^2
=(a+b)^2-c^2+a^2-(b-c)^2
=(a+b+c)(a+b-c)+(a+b-c)(a-b+c)
=(a+b-c)(a+b+c+a-b+c)
=2(a+b-c)(a+c)
8.
x(x+1)(x^2+x-1)-2
=(x^2+x)(x^2+x-1)-2
=(x^2+x)^2-(x^2+x)-2
=(x^2+x-2)(x^2+x+1)
=(x+2)(x-1)(x^2+x+1) 1\u3001\u5965\u8fd0\u4f1a\u4f1a\u573a\u91cc5\u63922\u53f7\u53ef\u4ee5\u7528\uff085\uff0c2\uff09\u8868\u793a\uff0c\u5219\uff087\uff0c4\uff09\u8868\u793a \u3002\u6bdb
2\u300181\u7684\u7b97\u672f\u5e73\u65b9\u6839\u662f______,=________.
3\u3001\u4e0d\u7b49\u5f0f\uff0d4x\u2265\uff0d12\u7684\u6b63\u6574\u6570\u89e3\u4e3a .
4\u3001\u8981\u4f7f\u6709\u610f\u4e49\uff0c\u5219x\u7684\u53d6\u503c\u8303\u56f4\u662f_______________\u3002
5\u3001\u5728\u25b3ABC\u4e2d,\u5df2\u77e5\u4e24\u6761\u8fb9a=3,b=4,\u5219\u7b2c\u4e09\u8fb9c\u7684\u53d6\u503c\u8303\u56f4\u662f_________.
6\u3001\u7b49\u8170\u4e09\u89d2\u5f62\u4e00\u8fb9\u7b49\u4e8e5\uff0c\u53e6\u4e00\u8fb9\u7b49\u4e8e8\uff0c\u5219\u5468\u957f\u662f_________ .
7\u3001\u5982\u56fe\u6240\u793a\uff0c\u8bf7\u4f60\u6dfb\u52a0\u4e00\u4e2a\u6761\u4ef6\u4f7f\u5f97AD\u2016BC\uff0c \u3002
8\u3001\u82e5\u4e00\u4e2a\u6570\u7684\u7acb\u65b9\u6839\u5c31\u662f\u5b83\u672c\u8eab\uff0c\u5219\u8fd9\u4e2a\u6570\u662f \u3002
9\u3001\u70b9P\uff08-2\uff0c1\uff09\u5411\u4e0a\u5e73\u79fb2\u4e2a\u5355\u4f4d\u540e\u7684\u70b9\u7684\u5750\u6807\u4e3a \u3002
10\uff0e\u89c2\u5bdf\u4e0b\u5217\u7b49\u5f0f\uff0c =2\uff0c=3\uff0c =4\uff0c\u8bf7\u4f60\u5199\u51fa\u542b\u6709n\uff08n>2\u7684\u81ea\u7136\u6570\uff09\u7684\u7b49\u5f0f\u8868\u793a\u4e0a\u8ff0\u5404\u5f0f\u89c4\u5f8b\u7684\u4e00\u822c\u5316\u516c\u5f0f\uff1a .
\u4e8c\uff0e\u540c\u5b66\u4eec\u6211\u662f\u798f\u5a03\u6676\u6676\u4e0a\u9762\u6b22\u6b22\u7684\u9898\u7b54\u7684\u600e\u4e48\u6837\u4e86\uff1f\u6211\u53ef\u9047\u5230\u96be\u9898\u4e86\uff0c\u8001\u5e08\u7ed9\u6211\u51fa\u4e86\u4e00\u4e9b\u9009\u62e9\u9898\uff0c\u6211\u6ca1\u8fbe\u5230\u8001\u5e08\u7684\u8981\u6c42\uff0c\u6ca1\u80fd\u6536\u96c6\u5230\u4f1a\u6807\uff0c\u5168\u9760\u4f60\u4eec\u4e86\uff08\u517120\u679a\u6bcf\u9898\u4e24\u679a\uff09\u3002
11\u3001\u5965\u8fd0\u4f1a\u9700\u8981\u4e00\u79cd\u591a\u8fb9\u5f62\u5f62\u72b6\u7684\u74f7\u7816\u7528\u6765\u94fa\u8bbe\u65e0\u7f1d\u5730\u677f\uff0c\u8d2d\u4e70\u7684\u74f7\u7816\u5f62\u72b6\u4e0d\u53ef\u80fd\u662f\uff08 \uff09
A\u3001\u7b49\u8fb9\u4e09\u89d2\u5f62; B\u3001\u6b63\u65b9\u5f62; C\u3001\u6b63\u516b\u8fb9\u5f62; D\u3001\u6b63\u516d\u8fb9\u5f62
12\u3001\u6709\u4e0b\u5217\u8bf4\u6cd5\uff1a
\uff081\uff09\u65e0\u7406\u6570\u5c31\u662f\u5f00\u65b9\u5f00\u4e0d\u5c3d\u7684\u6570\uff1b\uff082\uff09\u65e0\u7406\u6570\u662f\u65e0\u9650\u4e0d\u5faa\u73af\u5c0f\u6570\uff1b
\uff083\uff09\u65e0\u7406\u6570\u5305\u62ec\u6b63\u65e0\u7406\u6570\u3001\u96f6\u3001\u8d1f\u65e0\u7406\u6570\uff1b\uff084\uff09\u65e0\u7406\u6570\u90fd\u53ef\u4ee5\u7528\u6570\u8f74\u4e0a\u7684\u70b9\u6765\u8868\u793a\u3002\u5176\u4e2d\u6b63\u786e\u7684\u8bf4\u6cd5\u7684\u4e2a\u6570\u662f\uff08 \uff09
A\uff0e1 B\uff0e2 C\uff0e3 D\uff0e4
13\u3001\u5728\uff0c\uff0c-\uff0c\uff0c3.14\uff0c2+\uff0c- \uff0c0\uff0c\uff0c1.262662666\u2026\u4e2d\uff0c\u5c5e\u4e8e\u65e0\u7406\u6570\u7684\u4e2a\u6570\u662f\uff08 \uff09
A.3\u4e2a B. 4\u4e2a C. 5\u4e2a D.6\u4e2a
14.\u5df2\u77e5a<b,\u5219\u4e0b\u5217\u5f0f\u5b50\u6b63\u786e\u7684\u662f( )
A.a+5>b+5 B.3a>3b; C.-5a>-5b D.>
15. \u8bbe\u201c\u25cf\u201d\u201c\u25b2\u201d\u201c\u25a0\u201d\u8868\u793a\u4e09\u79cd\u4e0d\u540c\u7684\u7269\u4f53\uff0c\u73b0\u7528\u5929\u5e73\u79f0\u4e86\u4e24\u6b21\uff0c\u60c5\u51b5\u5982\u56fe2\u6240\u793a\uff0c\u90a3\u4e48\u25cf\u3001\u25b2\u3001\u25a0\u8fd9\u4e09\u79cd\u7269\u4f53\u6309\u8d28\u91cf\u4ece\u5927\u5230\u5c0f\u7684\u987a\u5e8f\u6392\u5217\u4e3a\uff08 \uff09
A. \u25a0\u25cf\u25b2 B. \u25a0\u25b2\u25cf C. \u25b2\u25cf\u25a0 D. \u25b2\u25a0\u25cf
16\u3001\u82e5\u4e0d\u7b49\u5f0f\u7ec4\u7684\u89e3\u96c6\u4e3a-1\u2264x\u22643\uff0c\u5219\u56fe\u4e2d\u8868\u793a\u6b63\u786e\u7684\u662f\uff08 \uff09
17\u3001\u5df2\u77e5\u70b9M(3a-9\uff0c1-a)\u5728\u7b2c\u4e09\u8c61\u9650\uff0c\u4e14\u5b83\u7684\u5750\u6807\u90fd\u662f\u6574\u6570\uff0c\u5219a=( )
A.1 B.2 C\uff0e3 D\uff0eO
18\u3001\u5317\u4eac\u5c06\u4e3e\u529e\u4e00\u6b21\u5965\u8fd0\u4f1a\u7eaa\u5ff5\u96c6\u90ae\u5c55\u89c8\uff0c\u5c55\u51fa\u7684\u90ae\u7968\u82e5\u6bcf\u4eba3\u5f20\uff0c\u5219\u591a24\u5f20\uff0c\u82e5\u6bcf\u4eba4\u5f20\uff0c\u5219\u5c1126\u5f20\uff0c\u5219\u5c55\u51fa\u90ae\u7968\u5f20\u6570\u662f\uff1a( )
A\u3001174 B\u3001178 C\u3001168 D\u3001164
19\u3001\u4e3a\u8fce\u63a5\u5965\u8fd0\u4fdd\u62a4\u751f\u6001\u73af\u5883\uff0c\u6211\u7701\u67d0\u53bf\u54cd\u5e94\u56fd\u5bb6\u201c\u9000\u8015\u8fd8\u6797\u201d\u53f7\u53ec\uff0c\u5c06\u67d0\u4e00\u90e8\u5206\u8015\u5730\u6539\u4e3a\u6797\u5730\uff0c\u6539\u53d8\u540e\uff0c\u6797\u5730\u9762\u79ef\u548c\u8015\u5730\u9762\u79ef\u5171\u6709180\u5e73\u65b9\u5343\u7c73\uff0c\u8015\u5730\u9762\u79ef\u662f\u6797\u5730\u9762\u79ef\u768425%\uff0c\u4e3a\u6c42\u6539\u53d8\u540e\u6797\u5730\u9762\u79ef\u548c\u8015\u5730\u9762\u79ef\u5404\u591a\u5c11\u5e73\u65b9\u5343\u7c73\u3002\u8bbe\u6539\u53d8\u540e\u8015\u5730\u9762\u79efx\u5e73\u65b9\u5343\u7c73\uff0c\u6797\u5730\u5730\u9762\u79efy\u5e73\u65b9\u5343\u7c73\uff0c\u6839\u636e\u9898\u610f\uff0c\u5217\u51fa\u5982\u4e0b\u56db\u4e2a\u65b9\u7a0b\u7ec4\uff0c\u5176\u4e2d\u6b63\u786e\u7684\u662f\uff08\uff09
A B C D
20\u3001\u4e00\u6b21\u5965\u8fd0\u77e5\u8bc6\u7ade\u8d5b\u4e2d,\u670920\u9053\u9009\u62e9\u9898.\u8bc4\u5206\u6807\u51c6\u662f:\u5bf91\u9898\u7ed95\u5206,\u95191\u9898\u62632\u5206,\u4e0d\u7b54\u9898\u4e0d\u7ed9\u5206\u4e5f\u4e0d\u6263\u5206.\u798f\u5a03\u6676\u6676\u6709\u4e24\u9053\u9898\u672a\u7b54.\u81f3\u5c11\u7b54\u5bf9\u51e0\u9053\u9898,\u603b\u5206\u624d\u4e0d\u4f1a\u4f4e\u4e8e60\u5206.\u5219\u6676\u6676\u81f3\u5c11\u7b54\u5bf9\u7684\u9898\u6570\u662f( )
A.7\u9053 B.8\u9898 C.9\u9898 D.10\u9898
\u4e09\u3001\u798f\u5a03\u8d1d\u8d1d\u6c14\u5598\u5618\u5618\u5f97\u8dd1\u8fc7\u6765\u5bf9\u5927\u5bb6\u8bf4\uff1a\u201c\u5feb\u70b9\uff0c\u5965\u59d4\u4f1a\u62db\u8bb0\u5206\u5458\u548c\u7b97\u5206\u5458\u5462\uff0c\u6211\u4eec\u53bb\u770b\u770b\u5427\u3002\u201d\u5230\u90a3\u4e00\u770b\u539f\u6765\u4ed6\u4eec\u662f\u6709\u6761\u4ef6\u7684\uff0c\u5f97\u7b54\u5bf9\u4e0b\u9762\u7684\u9898\uff0c\u4f60\u80fd\u884c\u5417\uff1f\uff08\u517120\u679a\uff0c\u6bcf\u98985\u679a\uff09
\uff0821\uff09
(22)\u89e3\u4e0d\u7b49\u5f0f2x\uff0d1<4x\uff0b13\uff0c\u5c06\u89e3\u96c6\u5728\u6570\u8f74\u4e0a\u8868\u793a\uff1a
\uff0823\uff09
\uff0824\uff09.
25\u3001\u8fce\u8fce\u62ff\u6765\u5965\u8fd0\u573a\u9986\u5efa\u8bbe\u4e2d\u7684\u4e00\u5f20\u56fe\u7eb8\uff0c\u5df2\u77e5\uff1a\u5728\u25b3ABC\u4e2d\uff0cAD\uff0cAE\u5206\u522b\u662f \u25b3ABC\u7684\u9ad8\u548c\u89d2\u5e73\u5206\u7ebf\uff0c\u82e5\u2220B=30\u00b0\uff0c \u2220C=50\u00b0.\u4f60\u80fd\u5e2e\u52a9\u5de5\u4eba\u5e08\u5085\u89e3\u51b3\u4e0b\u9762\u7684\u95ee\u9898\u5417\uff1f
\uff081\uff09 \u6c42\u2220DAE\u7684\u5ea6\u6570\u3002\uff085\u679a\uff09
\uff082\uff09 \u8bd5\u5199\u51fa \u2220DAE\u4e0e\u2220C-\u2220B\u6709\u4f55\u5173\u7cfb?\uff08\u4e0d\u5fc5\u8bc1\u660e\uff09\uff083\u679a\uff09
26\u3001\u798f\u5a03\u8fce\u8fce\u51c6\u5907\u4e70\u4e00\u53ea\u5c0f\u732b\u548c\u4e00\u53ea\u5c0f\u72d7\u73a9\u5177\uff0c\u5546\u5e97\u8001\u677f\u6ca1\u6709\u544a\u8bc9\u8fce\u8fce\u73a9\u5177\u7684\u4ef7\u683c\uff0c\u800c\u662f\u7ed9\u4e86\u5979\u4e0b\u9762\u7684\u4fe1\u606f\uff0c\u6765\u548c\u8fce\u8fce\u4e00\u8d77\u7b97\u7b97\u6bcf\u53ea\u5c0f\u732b\u548c\u5c0f\u72d7\u7684\u4ef7\u683c\u5427\uff01\uff088\u679a\uff09
\u4e00\u5171\u898170\u5143\uff1b
\u4e00\u5171\u898150\u5143\u3002
27\u3001\u5317\u4eac\u5965\u7ec4\u59d4\u51c6\u5907\u4ece\u7532\u3001\u4e59\u4e24\u5bb6\u516c\u53f8\u4e2d\u9009\u62e9\u4e00\u5bb6\u516c\u53f8\uff0c\u5236\u4f5c\u4e00\u6279\u5965\u8fd0\u7eaa\u5ff5\u518c\uff0c\u7532\u516c\u53f8\u63d0\u51fa\uff1a\u6536\u8bbe\u8ba1\u8d39\u4e0e\u52a0\u5de5\u8d39\u51711500\u5143\uff0c\u53e6\u5916\u6bcf\u518c\u6536\u53d6\u6750\u6599\u8d395\u5143\uff1a\u4e59\u516c\u53f8\u63d0\u51fa\uff1a\u6bcf\u518c\u6536\u53d6\u6750\u6599\u8d39\u4e0e\u52a0\u5de5\u8d39\u51718\u5143\uff0c\u4e0d\u6536\u8bbe\u8ba1\u8d39\uff0e\u8bbe\u5236\u4f5c\u7eaa\u5ff5\u518c\u7684\u518c\u6570\u4e3ax\uff0c\u7532\u516c\u53f8\u7684\u6536\u8d39(\u5143)\uff0c\u4e59\u516c\u53f8\u7684\u6536\u8d39\uff08\u5143\uff09\u3002
\uff081\uff09\u8bf7\u4f60\u5199\u51fa\u7528\u5236\u4f5c\u7eaa\u5ff5\u518c\u7684\u518c\u6570x\u8868\u793a\u7532\u516c\u53f8\u7684\u6536\u8d39\uff08\u5143\uff09\u7684\u5173\u7cfb\u5f0f\uff1b\uff083\u679a\uff09
\uff082\uff09\u8bf7\u4f60\u5199\u51fa\u7528\u5236\u4f5c\u7eaa\u5ff5\u518c\u7684\u518c\u6570x\u8868\u793a\u4e59\u516c\u53f8\u7684\u6536\u8d39\uff08\u5143\uff09\u7684\u5173\u7cfb\u5f0f\uff1b\uff083\u679a\uff09
\uff083\uff09\u5982\u679c\u4f60\u53bb\u7532\u3001\u4e59\u4e24\u516c\u53f8\u8ba2\u505a\u7eaa\u5ff5\u518c\uff0c\u4f60\u8ba4\u4e3a\u9009\u62e9\u54ea\u5bb6\u516c\u53f8\u4ef7\u683c\u4f18\u60e0? \u8bf7\u5199\u51fa\u5206\u6790\u7406\u7531\uff0e\uff086\u679a\uff09
28\u3001\u6700\u540e\u7531\u4e94\u4e2a\u798f\u5a03\u5e26\u6211\u4eec\u53bb\u53c2\u89c2\u56fd\u5bb6\u4f53\u80b2\u9986\u201c\u9e1f\u5de2\u201d\uff0c\u8d35\u5bbe\u95e8\u7968\u662f\u6bcf\u4f4d30\u5143\uff0c20\u4eba\u4ee5\u4e0a\uff08\u542b20\u4eba\uff09\u7684\u56e2\u4f53\u79688\u6298\u4f18\u60e0\uff0c\u6211\u4eec\u4e00\u884c\u5171\u670918\u4eba\uff08\u5305\u62ec\u798f\u5a03\uff09\uff0c\u5f53\u9886\u961f\u6b22\u6b22\u51c6\u5907\u597d\u96f6\u94b1\u5230\u552e\u7968\u5904\u4e7018\u5f20\u7968\u65f6\uff0c\u7231\u52a8\u8111\u7b4b\u7684\u6676\u6676\u558a\u4f4f\u4e86\u6b22\u6b22\uff0c\u63d0\u8bae\u4e7020\u5f20\u7968\uff0c\u6b22\u6b22\u4e0d\u660e\u767d\uff0c\u660e\u660e\u6211\u4eec\u53ea\u670918\u4eba\uff0c\u4e7020\u5f20\u7968\u5c82\u4e0d\u662f\u201c\u6d6a\u8d39\u201d\u5417\uff1f
\uff081\uff09\u8bf7\u4f60\u7b97\u7b97\uff0c\u6676\u6676\u7684\u63d0\u8bae\u5bf9\u4e0d\u5bf9\uff1f\u662f\u4e0d\u662f\u771f\u7684\u201c\u6d6a\u8d39\u201d\u5462\uff1f\uff084\u679a\uff09
\uff082\uff09\u5f53\u4eba\u6570\u5c11\u4e8e20\u4eba\u65f6\uff0c\u81f3\u5c11\u8981\u6709\u591a\u5c11\u4eba\u53bb\u201c\u9e1f\u5de2\u201d\uff0c\u4e7020\u5f20\u7968\u53cd\u800c\u5408\u7b97\u5462\uff1f\uff088\u679a\uff09
先给出这张图片，计算公式不是一下子可以做出来的，不需要一千分，给个200分、100分都可以，看看晚上能不能推导出这个公式，
疏忽了，这全是已知具体数据，没有公式可求，只可以具体计算，如果一定要求公式，必须把字母代替数据，但是对这个问题而言，没有普遍意义，所以没必要去求公式，本人把所有计算步骤都写的很详尽
请采纳，
你要求哪条灰色线的长度呢？灰色线都是作为尺寸标注的辅助线而已。
图已替你原样放大，你说说目标是哪条线吧，请看下面，点击放大：
简单，余弦定理
提示:应用几何圆的切线及割线定理进行计算。
这个截面图是半截枪栓。。。求公式。。逆向工程你在作死啊。。
绛旓細1銆佸湪鐩磋涓夎褰涓紝宸茬煡涓鏉鐩磋杈瑰拰鏂滆竟锛屾眰鍙︿竴鏉＄洿瑙掕竟鐨勯暱搴︺2銆佷娇鐢ㄥ嬀鑲″畾鐞嗭細a^2+b^2=c^2锛屽叾涓璦鍜宐鏄袱鏉＄洿瑙掕竟锛宑鏄枩杈广3銆佸鏋滃凡鐭ヤ竴鏉＄洿瑙掕竟a鍜屾枩杈筩锛屽彲浠ユ眰鍙︿竴鏉＄洿瑙掕竟b鐨勯暱搴︼細b=sqrt(c^2-a^2)銆4銆佸鏋滃凡鐭ヤ袱鏉＄洿瑙掕竟a鍜宐锛屼互鍙婃枩杈筩锛屽彲浠姹傜洿绾鐨勯暱搴︼細鐩寸嚎闀垮害...
绛旓細鐢ㄧ洿瑙掍笁瑙掑舰娉姹傜洿绾鐨勫疄闀垮拰鍊捐锛氭眰鐩寸嚎鐨勫疄闀垮拰伪瑙掞紝搴斾互鐩寸嚎鐨勬按骞虫姇褰变綔涓鏉鐩磋杈癸紝鐩寸嚎涓ょ鐐圭殑z鍧愭爣宸负鍙︿竴鐩磋杈广
绛旓細宸茬煡锛涓夎褰ABC涓紝D,E鍒嗗埆鏄疉B,AC(鎴栧欢闀跨嚎)涓婄殑鐐癸紝涓擜D/DB=AE/EC,姹傝瘉锛欴E//BC 璇佹槑锛氾紙鐢ㄥ悓涓娉曡瘉锛夎繃鐐笵浣淒F//BC浜C(鎴栧欢闀跨嚎)浜庣偣F,鍒欍AD/DB=AF/FC 鎵浠ャAD/AB=AF/AC,鍥犱负銆AD/DB=AE/EC,鎵浠ャAD/AB=AE/AC 鎵浠ャAF/AC=AE/AC,鎵浠ャAF=AE,鎵浠ャ鐐笷涓庣偣E閲嶅悎...
绛旓細棣栧厛锛岃繖鏉＄洿绾蹇呴』缁忚繃椤剁偣锛屼笉鐒跺緱鍒扮殑涓や釜鍥惧舰涓涓涓鏄涓夎褰紝鍙︿竴涓槸鍥涜竟褰紝閭ｄ箞缁忚繃绛夎叞涓夎褰㈢殑椤剁偣锛屽張鍙互灏嗙瓑鑵颁笁瑙掑舰鍒嗘垚涓や釜绛夎叞涓夎褰紝鍒嗕袱绉嶆儏鍐佃繘琛岋細鈶磋繃椤惰椤剁偣鐨勭洿绾匡細濡傚浘涓锛氬凡鐭B=AC锛屸憼AD=BD锛孉D=CD锛岃繖鏃段擜BD鈮屛擜CD(SSS)锛屸埓鈭燗DB=鈭燗DC锛屽張鈭燗DC+鈭燗DB=180掳锛...
绛旓細鏃犻檺澶氭潯.鍥犱负浠绘剰缁欏畾宸茬煡涓夎褰杈逛笂鐨勪竴鐐筆,鎬诲彲浠ヨ繃P鐐逛綔涓鐩寸嚎,浣垮钩鍒嗚涓夎褰㈢殑闈㈢Н.濡傚浘,瀹氣柍ABC,闅忎究鍦˙C杈逛笂鎵句竴鐐筆,杩嘝姹備綔涓鏉＄洿绾,浣垮钩鍒嗏柍ABC鐨勯潰绉.浣滄硶锛氳嫢P鐐规槸BC鐨勪腑鐐,鍒欎腑绾緼P鎵鍦ㄧ殑鐩寸嚎鍗充负鎵姹傦紱鑻鐐逛笉鏄腑鐐,鈶犮佷綔涓嚎AM锛涜繛鎺P锛涒憽銆佽繃M浣淢Q鈭P,浜よ竟AC(鎴朅B)...
绛旓細24 鎺ㄨ(AAS) 鏈変袱瑙掑拰鍏朵腑涓瑙掔殑瀵硅竟瀵瑰簲鐩哥瓑鐨勪袱涓涓夎褰鍏ㄧ瓑 25 杈硅竟杈瑰叕鐞(SSS) 鏈変笁杈瑰搴旂浉绛夌殑涓や釜涓夎褰㈠叏绛 26 鏂滆竟銆佺洿瑙掕竟鍏悊(HL) 鏈夋枩杈鍜屼竴鏉鐩磋杈瑰搴旂浉绛夌殑涓や釜鐩磋涓夎褰㈠叏绛 27 瀹氱悊1 鍦ㄨ鐨勫钩鍒嗙嚎涓婄殑鐐瑰埌杩欎釜瑙掔殑涓よ竟鐨勮窛绂荤浉绛 28 瀹氱悊2 鍒涓涓瑙掔殑涓よ竟鐨勮窛绂荤浉鍚岀殑鐐,鍦ㄨ繖涓...
绛旓細涓嚎闀垮畾鐞嗘槸闃挎尝缃楀凹濂ユ柉鎻愬嚭鐨勪竴绉嶅湪涓夎褰腑锛屾眰瑙ｄ腑绾块暱搴︾殑鏈锛岄傜敤浜鏁板棰嗗煙銆備腑绾块暱瀹氱悊锛屾槸琛ㄨ堪涓夎褰笁杈瑰拰涓嚎闀垮害鍏崇郴鐨勫畾鐞嗭紝鍏蜂綋鏄寚涓夎褰竴鏉涓嚎涓や晶鎵瀵硅竟骞虫柟鍜岀瓑浜庡簳杈圭殑涓鍗婂钩鏂逛笌璇ヨ竟涓嚎骞虫柟鍜岀殑2鍊嶃傜煡璇嗘嫇灞曪細涓夎褰㈡槸鐢卞悓涓骞抽潰鍐呬笉鍦ㄥ悓涓鐩寸嚎涓婄殑涓夋潯绾挎鈥橀灏锯欓『娆¤繛鎺ユ墍...
绛旓細涓銆佸垎鏋愭墍姹傜洿绾鐨勪綅缃 鍋囪涓夎褰笁杈归暱鍒嗗埆涓篴銆乥銆乧銆傜敱浜庢槸闈炵瓑鑵涓夎褰紝濡傛灉瀛樺湪杩欐牱鐨鐩寸嚎锛鍒欐墍姹傜殑鐩寸嚎蹇呯劧涓庝笁瑙掑舰鐨勪袱鏉¤竟鏈変氦鐐(涓庝笁瑙掑舰椤剁偣涓嶉噸鍚)锛屼笖鍏朵笌杈冮暱鐨勪袱杈圭浉浜ょ殑鍙兘鎬ф洿澶с傚涓嬪浘鎵绀猴紝鎺ヤ笅鏉ラ渶瑕佺‘瀹歺銆亂鐨勫笺傛牴鎹鎰忓彲鐭+y=(a+b+c)/2锛寈ySin伪/2=(abSin...
绛旓細姊呮秴鍔虫柉锛圡enelaus锛夊畾鐞嗘槸鐢卞彜甯岃厞鏁板瀹舵娑呭姵鏂鍏堣瘉鏄庣殑銆傚畠鎸囧嚭锛氬鏋涓鏉＄洿绾夸笌鈻矨BC鐨勪笁杈笰B銆丅C銆丆A鎴栧叾寤堕暱绾夸氦浜嶧銆丏銆丒鐐癸紝閭ｄ箞(AF/FB)脳(BD/DC)脳(CE/EA)=1銆傝瘉鏄庝竴锛氳繃鐐笰浣淎G鈥朆C浜F鐨勫欢闀跨嚎浜嶨,鍒橝F/FB=AG/BD , BD/DC=BD/DC , CE/EA=DC/AG銆備笁寮忕浉涔樺緱锛(AF/...
