已a，b两点相距两点相20m在比例尺是一比，400的平面图上，应画多少厘米a0，005 b0.5 c 什么是A B C 级轿车

\u7eb8\u5f20\u5927\u5c0f\u600e\u6837\u5206\u7c7b\u7684

\u3000\u3000\u56fd\u5bb6\u89c4\u5b9a\u7684\u5f00\u672c\u5c3a\u5bf8\u662f\u91c7\u7528\u7684\u56fd\u9645\u6807\u51c6\u7cfb\u5217\uff0c\u73b0\u5df2\u5b9a\u5165\u56fd\u5bb6\u884c\u4e1a\u6807\u51c6GB\uff0fT 1999\u5185\u5728\u5168\u56fd\u6267\u884c\u3002\u4e66\u520a\u672c\u518c\u73b0\u884c\u5f00\u672c\u5c3a\u5bf8\u4e3b\u8981\u662fA\u7cfb\u5217\u89c4\u683c\uff0c\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1aA4\uff0816k\uff09297mm\u00d7210mm\uff1bA5\uff0832k\uff09210mm\u00d7148mm\uff1bA6\uff0864k\uff09144mm\u00d7105mm\u4e09\u79cd\uff0c\u5176\u4e2dA3\uff088k\uff09\u5c3a\u5bf8\u5c1a\u672a\u5b9a\u5165\uff0c\u4f46\u666e\u904d\u7528420mm\u00d7297mm\u3002A2\uff082k\uff09420mm\u00d7594mm\u3002

\u3000\u3000\u5f00\u6570\u4e0e\u5f00\u672c\u7684\u6982\u5ff5
\u3000\u3000\u901a\u5e38\u628a\u4e00\u5f20\u6309\u56fd\u5bb6\u6807\u51c6\u5206\u5207\u597d\u7684\u5e73\u677f\u539f\u7eb8\u79f0\u4e3a\u5168\u5f00\u7eb8\u3002\u5728\u4ee5\u4e0d\u6d6a\u8d39\u7eb8\u5f20\u3001\u4fbf\u4e8e\u5370\u5237\u548c\u88c5\u8ba2\u751f\u4ea7\u4f5c\u4e1a\u4e3a\u524d\u63d0\u4e0b\uff0c\u628a\u5168\u5f00\u7eb8\u88c1\u5207\u6210\u9762\u79ef\u76f8\u7b49\u7684\u82e5\u5e72\u5c0f\u5f20\u79f0\u4e4b\u4e3a\u591a\u5c11\u5f00\u6570\uff1b\u5c06\u5b83\u4eec\u88c5\u8ba2\u6210\u518c\uff0c\u5219\u79f0\u4e3a\u591a\u5c11\u5f00\u672c\u3002
\u3000\u3000\u5bf9\u4e00\u672c\u4e66\u7684\u6b63\u6587\u800c\u8a00\uff0c\u5f00\u6570\u4e0e\u5f00\u672c\u7684\u6db5\u4e49\u76f8\u540c\uff0c\u4f46\u4ee5\u5176\u5c01\u9762\u548c\u63d2\u9875\u7528\u7eb8\u7684\u5f00\u6570\u6765\u8bf4\uff0c\u56e0\u5176\u9762\u79ef\u4e0d\u540c\uff0c\u5219\u5176\u6db5\u4e49\u4e0d\u540c\u3002\u901a\u5e38\u5c06\u5355\u9875\u51fa\u7248\u7269\u7684\u5927\u5c0f\uff0c\u79f0\u4e3a\u5f00\u5f20\uff0c\u5982\u62a5\u7eb8\uff0c\u6302\u56fe\u7b49\u5206\u4e3a\u5168\u5f20\u3001\u5bf9\u5f00\u3001\u56db\u5f00\u548c\u516b\u5f00\u7b49\u3002
\u3000\u3000\u7531\u4e8e\u56fd\u9645\u56fd\u5185\u7684\u7eb8\u5f20\u5e45\u9762\u6709\u51e0\u4e2a\u4e0d\u540c\u7cfb\u5217\uff0c\u56e0\u6b64\u867d\u7136\u5b83\u4eec\u90fd\u88ab\u5206\u5207\u6210\u540c\u4e00\u5f00\u6570\uff0c\u4f46\u5176\u89c4\u683c\u7684\u5927\u5c0f\u5374\u4e0d\u4e00\u6837\u3002\u5728\u5b9e\u9645\u751f\u4ea7\u4e2d\u901a\u5e38\u5c06\u5e45\u9762\u4e3a787\u00d71092\uff08mm\uff09\u621631\u00d743\u82f1\u5bf8\u7684\u5168\u5f20\u7eb8\u79f0\u4e4b\u4e3a\u6b63\u5ea6\u7eb8\uff1b\u5c06\u5e45\u9762\u4e3a889\u00d71194\uff08mm\uff09\u621635\u00d747\u82f1\u5bf8\u7684\u5168\u5f20\u7eb8\u79f0\u4e4b\u4e3a\u5927\u5ea6\u7eb8\u3002\u7531\u4e8e787\u00d71092\uff08mm\uff09\u7eb8\u5f20\u7684\u5f00\u672c\u662f\u6211\u56fd\u81ea\u884c\u5b9a\u4e49\u7684\uff0c\u4e0e\u56fd\u9645\u6807\u51c6\u4e0d\u4e00\u81f4\uff0c\u56e0\u6b64\u662f\u4e00\u79cd\u9700\u8981\u9010\u6b65\u6dd8\u6c70\u7684\u975e\u6807\u51c6\u5f00\u672c\u3002
\u3000\u3000\u4e3a\u4e86\u4e66\u520a\u88c5\u8ba2\u65f6\u6613\u4e8e\u6298\u53e0\u6210\u518c\uff0c\u5370\u5237\u7528\u7eb8\u591a\u6570\u662f\u4ee52\u500d\u6570\u6765\u88c1\u5207\u3002
\u3000\u3000\u672a\u7ecf\u88c1\u5207\u7684\u7684\u7eb8\u79f0\u4e3a\u5168\u5f20\u7eb8,\u5c06\u5168\u5f20\u7eb8\u5bf9\u6298\u88c1\u5207\u540e\u7684\u5e45\u9762\u79f0\u4e3a\u5bf9\u5f00\u6216\u534a\u5f00;\u628a\u5bf9\u5f00\u7eb8\u518d\u5bf9\u6298\u88c1\u5207\u540e\u7684\u5e45\u9762\u79f0\u4e3a\u56db\u5f00\uff1b\u628a\u56db\u5f00\u7eb8\u518d\u5bf9\u6298\u88c1\u5207\u540e\u7684\u5e45\u9762\u79f0\u4e3a\u516b\u5f00\uff0c\u2026\u2026\u3002

\u3000\u30001965 \u5e74\u56fd\u5bb6\u6807\u51c6\u89c4\u5b9a\u56fe\u4e66\u6742\u5fd7\u7684\u5f00\u672c\u4e3a A \u3001 B \u3001 C \u4e09\u7ec4\uff0c A \u7ec4\u662f\u7528\u539f\u6574\u5f20\u7eb8\u5f20\u4e3a 880 \u6beb\u7c73\u00d7 1230 \u6beb\u7c73\u88c1\u5207\u7684\uff0c B \u7ec4\u539f\u7eb8\u5f20\u4e3a 787 \u6beb\u7c73\u00d7 1092 \u6beb\u7c73\uff0c C \u7ec4\u539f\u7eb8\u5f20\u4e3a 695 \u6beb\u7c73\u00d7 960 \u6beb\u7c73\u3002 1982 \u5e74\uff0c GB788 \u2014 87 \u5f3a\u8c03\u91c7\u7528\u56fd\u9645\u6807\u51c6\uff0c\u76ee\u524d\u6b63\u5728\u63a8\u5e7f\u4e2d\u3002\u65b0\u6807\u51c6\u4fdd\u7559\u4e86\u65e7\u6807\u51c6\u4e2d\u7684\u7b26\u5408\u56fd\u9645\u6807\u51c6\u7684 A \u7cfb\u5217\uff0c\u540c\u65f6\u91c7\u7528\u4e86\u56fd\u9645\u6807\u51c6 B \u7cfb\u5217\uff0c\u6dd8\u6c70\u4e86\u539f\u6807\u51c6\u4e2d\u7684 B \u3001 C \u7ec4\u4e24\u79cd\u5f00\u672c\u3002\u5176\u76ee\u7684\u662f\u4e3a\u4e86\u4fc3\u8fdb\u5bf9\u5916\u8d38\u6613\u548c\u56fd\u9645\u4ea4\u6d41\u3002\u6211\u4eec\u5e73\u65f6\u590d\u5370\u65f6\u6240\u8bf4\u7684 A4 \u3001 B5 \u7b49\u5c31\u662f\u56fd\u9645\u6807\u51c6\u3002

\u3000\u3000\u56fd\u5bb6\u89c4\u5b9a\u7684\u5f00\u672c\u5c3a\u5bf8\u662f\u91c7\u7528\u7684\u56fd\u9645\u6807\u51c6\u7cfb\u5217\uff0c\u73b0\u5df2\u5b9a\u5165\u56fd\u5bb6\u884c\u4e1a\u6807\u51c6GB\uff0fT 1999\u5185\u5728\u5168\u56fd\u6267\u884c\u3002\u4e66\u520a\u672c\u518c\u73b0\u884c\u5f00\u672c\u5c3a\u5bf8\u4e3b\u8981\u662fA\u7cfb\u5217\u89c4\u683c\uff0c\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1aA4\uff0816k\uff09297mm\u00d7210mm


\u3000\u3000\u4e00\uff0e\u7eb8\u5f20\u5e45\u9762\u89c4\u683c

\u3000\u3000\u7eb8\u5f20\u7684\u89c4\u683c\u662f\u6307\u7eb8\u5f20\u5236\u6210\u540e\uff0c\u7ecf\u8fc7\u4fee\u6574\u5207\u8fb9\uff0c\u88c1\u6210\u4e00\u5b9a\u7684\u5c3a\u5bf8\u3002\u8fc7\u53bb\u662f\u4ee5\u591a\u5c11"\u5f00"\uff08\u4f8b\u59828\u5f00\u621616\u5f00\u7b49\uff09\u6765\u8868\u793a\u7eb8\u5f20\u7684\u5927\u5c0f\uff0c\u73b0\u5728\u6211\u91c7\u7528\u56fd\u9645\u6807\u51c6\uff0c\u89c4\u5b9a\u4ee5A0\u3001A1\u3001A2\u3001B1\u3001B2......\u7b49\u6807\u8bb0\u6765\u8868\u793a\u7eb8\u5f20\u7684\u5e45\u9762\u89c4\u683c\u3002\u6807\u51c6\u89c4\u5b9a\u7eb8\u5f20\u7684\u5e45\u5bbd\uff08\u4ee5X\u8868\u793a\uff09\u548c\u957f\u5ea6\uff08\u4ee5Y\u8868\u793a\uff09\u7684\u6bd4\u4f8b\u5173\u7cfb\u4e3aX\uff1aY=1\uff1a \u3002\u6309\u7167\u7eb8\u5f20\u5e45\u9762\u7684\u57fa\u672c\u9762\u79ef\uff0c\u628a\u5e45\u9762\u89c4\u683c\u5206\u4e3aA\u7cfb\u5217\u3001B\u7cfb\u5217\u548cC\u7cfb\u5217\uff0c\u5e45\u9762\u89c4\u683c\u4e3aA0\u7684\u5e45\u9762\u5c3a\u5bf8\u4e3a841mm\u00d71189mm\uff0c\u5e45\u9762\u9762\u79ef\u4e3a1\u5e73\u65b9\u7c73\uff1bB0\u7684\u5e45\u9762\u5c3a\u5bf8\u4e3a1000mm\u00d71414mm\uff0c\u5e45\u9762\u9762\u79ef\u4e3a2.5\u5e73\u65b9\u7c73\uff1bC0\u7684\u5e45\u9762\u5c3a\u5bf8\u4e3a917mm\u00d71279mm\uff0c\u5e45\u9762\u9762\u79ef\u4e3a2.25\u5e73\u65b9\u7c73\uff1b\u590d\u5370\u7eb8\u7684\u5e45\u9762\u89c4\u683c\u53ea\u91c7\u7528A\u7cfb\u5217\u548cB\u7cfb\u5217\u3002\u82e5\u5c06A0\u7eb8\u5f20\u6cbf\u957f\u5ea6\u65b9\u5f0f\u5bf9\u5f00\u6210\u4e24\u7b49\u5206\uff0c\u4fbf\u6210\u4e3aA1\u89c4\u683c\uff0c\u5c06A\u7eb8\u5f20\u6cbf\u957f\u5ea6\u65b9\u5411\u5bf9\u5f00\uff0c\u4fbf\u6210\u4e3aA2\u89c4\u683c\uff0c\u5982\u6b64\u5bf9\u5f00\u81f3A8\u89c4\u683c\uff1bB8\u7eb8\u5f20\u4ea6\u6309\u6b64\u6cd5\u5bf9\u5f00\u81f3B8\u89c4\u683c\u3002A0\uff5eA8\u548cB0\uff5eB8\u7684\u5e45\u9762\u5c3a\u5bf8\u89c1\u4e0b\u8868\u6240\u5217\u3002\u5176\u4e2dA3\u3001A4\u3001A5\u3001A6\u548cB4\u3001B5\u3001B6 7\u79cd\u5e45\u9762\u89c4\u683c\u4e3a\u590d\u5370\u7eb8\u5e38\u7528\u7684\u89c4\u683c\u3002

\u3000\u3000\u7eb8\u5f20\u5e45\u9762\u89c4\u683c\u5c3a\u5bf8
\u3000\u3000\u89c4 \u683c
\u3000\u3000\u5e45\u5bbd(mm)
\u3000\u3000\u957f\u5ea6(mm)

\u3000\u3000\u89c4 \u683c
\u3000\u3000\u5e45\u5bbd(mm)
\u3000\u3000\u957f\u5ea6(mm)

\u3000\u3000A0
\u3000\u3000A1
\u3000\u3000A2
\u3000\u3000A3
\u3000\u3000A4
\u3000\u3000A5
\u3000\u3000A6
\u3000\u3000A7
\u3000\u3000A8
\u3000\u3000841
\u3000\u3000594
\u3000\u3000420
\u3000\u3000297
\u3000\u3000210
\u3000\u3000148
\u3000\u3000105
\u3000\u300074
\u3000\u300052
\u3000\u30001189
\u3000\u3000841
\u3000\u3000594
\u3000\u3000420
\u3000\u3000297
\u3000\u3000210
\u3000\u3000148
\u3000\u3000105
\u3000\u300074

\u3000\u3000B0
\u3000\u3000B1
\u3000\u3000B2
\u3000\u3000B3
\u3000\u3000B4
\u3000\u3000B5
\u3000\u3000B6
\u3000\u3000B7
\u3000\u3000B8
\u3000\u30001000
\u3000\u3000707
\u3000\u3000500
\u3000\u3000353
\u3000\u3000250
\u3000\u3000176
\u3000\u3000125
\u3000\u300088
\u3000\u300062
\u3000\u30001414
\u3000\u30001000
\u3000\u3000707
\u3000\u3000500
\u3000\u3000353
\u3000\u3000250
\u3000\u3000176
\u3000\u3000125
\u3000\u300088


\u3000\u3000\u82e5\u7eb8\u5f20\u89c4\u683c\u6807\u8bb0\u5b57\u6bcd\u7684\u524d\u9762\u52a0\u4e00\u4e2a\u5b57\u6bcdR(\u6216S)\u65f6\uff0c\u662f\u8868\u793a\u7eb8\u5f20\u6ca1\u6709\u5207\u6bdb\u8fb9\uff0c\u7ecf\u8fc7\u5207\u8fb9\u4fee\u6574\u540e\uff0c\u5c06\u51cf\u5c11\u5230\u6807\u51c6\u5c3a\u5bf8\uff0c\u4f8b\u5982RA4\uff08\u6216SA4\uff09\u8868\u793a\u4e0d\u5207\u8fb9\u7eb8\u5f20\u7684\u5c3a\u5bf8\u4e3a240mm\u00d7330mm\uff0c\u7ecf\u8fc7\u5207\u8fb9\u4fee\u6574\u540e\u5176\u5c3a\u5bf8\u4e3a210mm\u00d7297mm\u3002
\u3000\u3000\u82e5\u8fdb\u884c\u500d\u7387\u653e\u5927\u6216\u500d\u7387\u7f29\u5c0f\u590d\u5370\u65f6\uff0c\u6240\u4f7f\u7528\u3001\u7684\u590d\u5370\u7eb8\u7684\u5e45\u9762\u89c4\u683c\u6709\u7740\u76f8\u5e94\u7684\u5173\u7cfb\uff0c\u5982\u4e0b\u56fe\u6240\u5217,\u4f9b\u4f5c\u53d8\u500d\u590d\u5370\u65f6\u9009\u7528\u590d\u5370\u7eb8\u5f20\u5e45\u9762\u89c4\u683c\u7684\u53c2\u8003\uff1b\u4f8b\u5982\uff0c\u82e5\u5c06A3\u5e45\u9762\u7684\u539f\u7a3f\u500d\u7387\u653e\u59271\uff1a1.22\u65f6\uff0c\u590d\u5370\u7eb8\u5e94\u91c7\u7528B3\u5e45\u9762\u89c4\u683c\uff1b\u82e5\u500d\u7387\u7f29\u5c0f1\uff1a0.8\u65f6\uff0c\u590d\u5370\u7eb8\u5e94\u91c7\u7528B4\u89c4\u683c\uff0c\u82e5\u500d\u7387\u7f29\u5c0f1\uff1a0.7\u65f6\uff0c\u590d\u5370\u7eb8\u5e94\u91c7\u7528A4\u89c4\u683c\u3002\u8868\u4e2d\u7684A5\u3001B5\u3001B6\u4e09\u79cd\u753b\u53cc\u6846\u7684\u89c4\u683c\u8868\u793a\u6781\u5c11\u4f7f\u7528\u3002


\u3000\u3000\u4e8c\uff0e\u590d\u5370\u7eb8\u7684\u9009\u7528
\u3000\u30001\uff0e\u7eb8\u7684\u539a\u5ea6
\u3000\u3000\u7eb8\u7684\u539a\u5ea6\u901a\u5e38\u662f\u4ee5\u6bcf\u5e73\u65b9\u7c73\u7684\u91cd\u91cf\uff08\u514b\uff09\u6765\u8868\u793a\uff0c\u4e00\u822c\u9759\u7535\u590d\u5370\u673a\u7528\u7eb8\u7684\u539a\u5ea6\u89c4\u683c\u4e3a64\uff5e80\u514b/\u5e73\u65b9\u7c73\u3002
\u3000\u30002\uff0e\u7eb8\u7684\u5bc6\u5ea6
\u3000\u3000\u7eb8\u7684\u5bc6\u5ea6\u662f\u6307\u7eb8\u7684\u7ea4\u7ef4\u7684\u758f\u5bc6\u548c\u7c97\u7ec6\u7684\u7a0b\u5ea6\u3002\u5982\u679c\u7eb8\u7684\u7ea4\u7ef4\u592a\u758f\u548c\u592a\u7c97\uff08\u5373\u5bc6\u5ea6\u5dee\uff09\uff0c\u590d\u5370\u54c1\u56fe\u8c61\u7684\u5206\u8fa9\u7387\u5c31\u6bd4\u8f83\u5dee\uff0c\u800c\u4e14\u8fd8\u5bb9\u6613\u4ea7\u751f\u7eb8\u6bdb\u3001\u7eb8\u5c51\uff0c\u5f04\u8d43\u590d\u5370\u673a\uff0c\u4ece\u800c\u4f7f\u590d\u5370\u54c1\u4ea7\u751f\u5e95\u7070\uff0c\u56e0\u6b64\u5b9c\u9009\u7528\u5bc6\u5ea6\u9ad8\u7684\u590d\u5370\u7eb8\u3002
\u3000\u30003\uff0e\u7eb8\u7684\u633a\u5ea6
\u3000\u3000\u7eb8\u7684\u633a\u5ea6\u662f\u6307\u7eb8\u7684\u8d28\u5730\u575a\u633a\u7a0b\u5ea6\u3002\u82e5\u633a\u5ea6\u5dee\u65f6\uff0c\u5bb9\u6613\u5728\u8f93\u7eb8\u901a\u9053\u5185\u7a0d\u9047\u5230\u4e00\u70b9\u963b\u529b\u65f6\uff0c\u7eb8\u5c31\u4ea7\u751f\u8d77\u7ec9\u4ee5\u81f3\u963b\u585e\uff0c\u6240\u4ee5\u5e94\u9009\u7528\u575a\u633a\u5ea6\u597d\u7684\u590d\u5370\u7eb8\u3002
\u3000\u30004\uff0e\u7eb8\u7684\u8868\u9762\u5149\u5ea6
\u3000\u3000\u7eb8\u7684\u8868\u9762\u5149\u5ea6\u662f\u6307\u7eb8\u8868\u9762\u7684\u5149\u4eae\u7a0b\u5ea6\u3002\u7eb8\u9762\u989c\u8272\u5e94\u4e3a\u767d\u8272\uff0c\u4e0d\u8981\u7070\u6697\u8272\uff0c\u5149\u4eae\u7a0b\u5ea6\u4e0d\u5fc5\u592a\u9ad8\uff0c\u5149\u4eae\u5ea6\u592a\u9ad8\u5bf9\u56fe\u8c61\u7684\u5b9a\u5f71\u4e0d\u5229\u3002
\u3000\u30005\uff0e\u7eb8\u7684\u5e72\u71e5\u7a0b\u5ea6
\u3000\u3000\u590d\u5370\u7eb8\u5982\u679c\u5e72\u71e5\u5ea6\u4f4e\uff0c\u542b\u6c34\u91cf\u5927\uff0c\u5c31\u4f1a\u964d\u4f4e\u4e86\u7eb8\u7684\u7edd\u7f18\u6027\u80fd\uff0c\u4ece\u800c\u4f1a\u4f7f\u590d\u5370\u54c1\u7684\u56fe\u8c61\uff08\u6216\u5b57\u8ff9\uff09\u6d45\u6de1\uff0c\u5e95\u7070\u5927\uff0c\u800c\u4e14\u8fd8\u4f1a\u5bb9\u6613\u4ea7\u751f\u5361\u7eb8\u73b0\u8c61\uff0c\u56e0\u6b64\uff0c\u8981\u9009\u7528\u5e72\u71e5\u5ea6\u9ad8\u7684\u590d\u5370\u7eb8\uff0c\u53e6\u4e00\u65b9\u9762\uff0c\u7eb8\u7684\u4fdd\u7ba1\u8981\u6ce8\u610f\u9632\u6f6e\uff0c\u8981\u5b58\u653e\u5728\u5e72\u71e5\u548c\u901a\u98ce\u7684\u5730\u65b9\u3002

A\u7ea7\uff08\u5305\u62ecA0\u3001A00\uff09\u8f66\u662f\u6307\u5c0f\u578b\u8f7f\u8f66\uff1bB\u7ea7\u8f66\u662f\u4e2d\u6863\u8f7f\u8f66\uff1bC\u7ea7\u8f66\u662f\u9ad8\u6863\u8f7f\u8f66\uff1b\u800cD\u7ea7\u8f66\u6307\u7684\u5219\u662f\u8c6a\u534e\u8f7f\u8f66\uff0c\u5176\u7b49\u7ea7\u5212\u5206\u4e3b\u8981\u4f9d\u636e\u8f74\u8ddd\u3001\u6392\u91cf\u3001\u91cd\u91cf\u7b49\u53c2\u6570\uff0c\u5b57\u6bcd\u987a\u5e8f\u8d8a\u9760\u540e\uff0c\u8be5\u7ea7\u522b\u8f66\u7684\u8f74\u8ddd\u8d8a\u957f\u3001\u6392\u91cf\u548c\u91cd\u91cf\u8d8a\u5927\uff0c\u8f7f\u8f66\u7684\u8c6a\u534e\u7a0b\u5ea6\u4e5f\u4e0d\u65ad\u63d0\u9ad8\u3002
\u3000\u3000A00\u7ea7\u8f7f\u8f66\u7684\u8f74\u8ddd\u5e94\u57282 \u7c73\u81f32.2\u7c73\u4e4b\u95f4\uff0c\u53d1\u52a8\u673a\u6392\u91cf\u5c0f\u4e8e1\u5347\uff0c\u4f8b\u5982\u5965\u62d3\u5c31\u5c5e\u4e8eA00\u7ea7\u8f7f\u8f66\uff1b
\u3000\u3000A0\u7ea7\u8f7f\u8f66\u7684\u8f74\u8ddd\u4e3a2.2\u7c73\u81f32.3\u7c73\uff0c\u6392\u91cf\u4e3a1\u5347\u81f31.3\u5347\uff0c\u6bd4\u8f83\u5178\u578b\u7684\u662f\u4e24\u53a2\u590f\u5229\u8f7f\u8f66\uff1b
\u3000\u3000\u4e00\u822c\u6240\u8bf4\u7684A\u7ea7\u8f66\u5176\u8f74\u8ddd\u8303\u56f4\u7ea6\u57282.3\u7c73\u81f32.45\u7c73\u4e4b\u95f4\uff0c\u6392\u91cf\u7ea6\u57281.3\u5347\u81f31.6\u5347\uff0c\u4e00\u6c7d\u5927\u4f17\u7684\u6377\u8fbe\u3001\u4e0a\u6d77\u5927\u4f17\u7684POLO\u90fd\u7b97\u5f97\u4e0a\u662fA\u7ea7\u8f66\u5f53\u4e2d\u7684\u660e\u661f\uff1b
B\u7ea7\u4e2d\u6863\u8f7f\u8f66\u8f74\u8ddd\u7ea6\u57282.45\u7c73\u81f32.6\u7c73\u4e4b\u95f4\uff0c\u6392\u91cf\u4ece1.6\u5347\u52302.4\u5347\uff0c\u8fd1\u5e74\u6765\uff0cB\u7ea7\u8f66\u5e02\u573a\u9010\u6e10\u6210\u4e3a\u56fd\u5185\u6c7d\u8f66\u4f01\u4e1a\u62fc\u6740\u7684\u4e3b\u6218\u573a\uff0c\u5965\u8feaA4\u3001\u5e15\u8428\u7279\u3001\u4e2d\u534e\u3001\u4e1c\u65b9\u4e4b\u5b50\u7b49\u4f17\u591a\u8f66\u578b\u5747\u5c5e\u4e8eB\u7ea7\u8f66\u9635\u8425\uff1b
C\u7ea7\u9ad8\u6863\u8f7f\u8f66\u7684\u8f74\u8ddd\u7ea6\u57282.6\u7c73\u81f32.8\u7c73\u4e4b\u95f4\uff0c\u53d1\u52a8\u673a\u6392\u91cf\u4e3a2.3\u5347\u81f33.0\u5347\uff0c\u56fd\u5185\u540d\u6c14\u6700\u5927\u7684C \u7ea7\u8f66\u975e\u5965\u8feaA6\u83ab\u5c5e\uff1b
D\u7ea7\u8c6a\u534e\u8f7f\u8f66\u5927\u591a\u5916\u5f62\u6c14\u6d3e\uff0c\u8f66\u5185\u7a7a\u95f4\u6781\u4e3a\u5bbd\u655e\uff0c\u53d1\u52a8\u673a\u52a8\u529b\u4e5f\u975e\u5e38\u5f3a\u52b2\uff0c\u5176\u8f74\u8ddd\u4e00\u822c\u5747\u5927\u4e8e2.8\u7c73\uff0c\u6392\u91cf\u57fa\u672c\u90fd\u57283.0\u5347\u4ee5\u4e0a\uff0c\u76ee\u524d\u5e38\u89c1\u7684D\u7ea7\u8f66\u6709\u5954\u9a70S\u7cfb\u5217\u3001\u5b9d\u9a6c7\u7cfb\u3001\u5965\u8feaA8\u548c\u52b3\u65af\u83b1\u65af\u3001\u5bbe\u5229\u7b49\u51e0\u4e2a\u54c1\u724c\u7684\u8f66\u578b\u3002

20X1000÷400
=50毫米
=5厘米
应该选C，5厘米

涓鍒楁í娉㈠湪X杞翠笂娌挎鏂瑰悜浼犳挱,A B涓篨杞翠笂鐩歌窛20m涓ょ偣,A鍦娉㈠嘲鏃,B鎭
绛旓細鐢遍涓弿杩板彲鐭ワ紝AB涓ょ偣闂撮殧鐨勮窛绂讳负1/4锛3/4锛5/4锛(2n-1)/4涓尝闀匡紝鍥犱负T<鈻硉<2T锛屾墍浠ヤ紶鎾殑璺濈澶т簬涓涓尝闀匡紝灏忎簬涓や釜娉㈤暱锛屾墍浠1/4锛3/4锛5/4涓尝闀=20m锛娉㈤暱绛変簬80m锛80/3m锛16m銆傗柍t=3*T/2锛屾墍浠=10/3绉掋傚彲鑳界殑娉㈤熶负24m/s锛8m/s锛24/5m/s銆

...鐩歌窛20m,浣嶄簬鎮偣姝ｄ笅鏂,妫掔殑涓嬬A涓B鐐圭浉璺20m,灏嗘浠嶰鐐规斁寮...
绛旓細22 锛岃В寰 t 2 = 2( h 1 + h 2 +L) g = 2脳(20+20+5) 10 s=3s 锛涙晠妫掗氳繃BC鎵闇鐨勬椂闂翠负鈻硉=t 2 -t 1 =1s锛涚瓟锛欰绔埌杈綛鐐规椂閫熷害澶у皬涓20m/s锛屾閫氳繃BC鎵闇鐨勬椂闂翠负1绉掞紟

濡傚浘,閾佽矾涓夾銆B涓ょ偣鐩歌窛20km,C銆丏涓轰袱鏉戝簞
绛旓細棣栧厛锛屽湪娌℃湁鍥剧殑鎯呭喌涓嬶紝鏈変袱绉嶅彲鑳斤細绗竴锛欴銆丆浣嶄簬AB寤堕暱绾垮悓涓渚с傜浜岋細D銆丆浣嶄簬AB寤堕暱绾夸袱渚с傛棤璁哄湪閭ｄ竴渚э紝缁撹閮戒竴鏍凤紝鍗矱鐐归兘浣嶄簬鍚屼竴涓綅缃1銆佽繛鎺銆丏涓ょ偣 2銆佸垎鍒互C銆丏涓ょ偣鐢荤瓑鍗婂緞鐨勫渾锛屼笖浣垮緱涓や釜鍦嗙浉浜 3銆佽繛鎺ヤ袱涓渾鐩镐氦鐨2鐐锛堢浉浜や竴瀹氭湁涓ょ偣锛夊苟寤堕暱鍒颁笌A銆B闂寸殑...

鏁拌酱涓婄偣A銆佺偣B琛ㄧず鐨勬槸涓や釜浜掍负鐩稿弽鏁扮殑,A銆B涓ょ偣闂寸殑璺濈涓20,姹傝繖...
绛旓細b.骞朵笖AB涓ょ偣闂寸殑璺濈涓20 鎵浠 a,b鐨勭粷瀵瑰=20梅2=10 鍗 a=10,b=-10 鎴 a=-10,b=10 闈炲父娆ｈ祻浣犵殑鍕ゅ濂介棶绮剧锛岀浣犳垚鍔燂紒濡傛灉鏈鏈変粈涔堜笉鏄庣櫧鍙互杩介棶锛屽鏋滄弧鎰忚寰楅噰绾 濡傛灉鏈夊叾浠栭棶棰樿閲囩撼鏈鍚庡彟鍙戠偣鍑诲悜鎴戞眰鍔╋紝绛旈涓嶆槗锛岃璋呰В锛岃阿璋傜瀛︿範杩涙锛

銆佽繘琛屾按鍑嗕华i瑙掓楠屾椂,A,B涓ょ偣鐩歌窛30m,灏嗘按鍑嗕华瀹夌疆鍦ˋ,B涓ょ偣涓棿鏃...
绛旓細H1=a1-b1=1.321-1.17=0.151 H2=a2-b2=1.695-1.466=0.229 H1鈮燞2 鈭翠笉骞宠銆俛鐐瑰昂涓婃纭鏁颁负锛歛2=b2+H1=1.466+0.151=1.617 ab闂存纭珮宸甴=1.321-1.17=0.151锛屽甫i瑙掑奖鍝嶇殑楂樺樊h1=1.695-1.466=0.229锛屾墍浠瑙掑奖鍝峝h=h1-h=0.229-0.151=0.078锛屾晠姘村噯绠¤酱涓庤鍑嗚酱...

...b涓ょ偣鐩歌窛25km,c銆乨涓轰袱鏉戝簞,da鍨傜洿ab浜a,cb鍨傜洿ab浜巄,宸茬煡da=15...
绛旓細濡傚浘鎵绀,閾佽矾涓奱銆b涓ょ偣鐩歌窛25km,c銆乨涓轰袱鏉戝簞,da鍨傜洿ab浜a,cb鍨傜洿ab浜巄,宸茬煡da=15km,cb=10km,鐜板湪瑕佸湪閾佽矾ab涓婂缓璁句竴涓湡鐗逛骇鏀惰喘绔檈,浣垮緱鎵峜銆乨涓ゆ潙鍒癳绔欑殑璺濈鐩哥瓑,鍒檈绔... 濡傚浘鎵绀,閾佽矾涓奱銆乥涓ょ偣鐩歌窛25km,c銆乨涓轰袱鏉戝簞,da鍨傜洿ab浜巃,cb鍨傜洿ab浜巄,宸茬煡da=15km,cb=10km,鐜板湪瑕佸湪閾佽矾ab...

鐢插拰涔欎袱浜哄垎鍒粠ab涓ょ偣鐩稿鑰岃,鐢叉瘡灏忚8鍗冪背,涔欐瘡灏忔椂琛6鍗冪背,ab鐩 ...
绛旓細棣栧厛璁＄畻鐢插湪閲嶆柊寮濮嬭蛋涔嬪墠娑堣楃殑鏃堕棿锛1/2灏忔椂+4/9灏忔椂+1/6灏忔椂=10/9灏忔椂 姝ゆ椂涔宸茬粡璧颁簡锛6*10/9=20/3鍗冪背锛屽洜姝ゆ鏃剁敳涔欎箣闂寸殑璺濈鏄20-20/3=40/3鍗冪背 鐜板湪鐨勭敳涔欑殑鐩稿閫熷害鏄7+6=13鍗冪背/灏忔椂 锛1锛変粬浠浉閬囩殑鏃堕棿鏄40/3梅13=40/39灏忔椂銆傚鏋滀粠鏈鍒濈敳涔欏嚭鍙戠殑鏃堕棿绠楄捣锛屽弻鏂圭浉閬囩殑...

...B涓ょ偣閮藉湪娌崇殑瀵瑰哺(涓嶅彲鍒拌揪),鑻ュ湪娌冲哺閫夊彇鐩歌窛20绫崇殑C銆丏涓ょ偣,娴...
绛旓細瑙ｏ細鈭燙DB锛45掳锛岋細鈭燚CB锛90掳锛屽垯锛屼笁瑙掑舰DCB鏄瓑鑵扮洿瑙掍笁瑙掑舰銆侭C=DC=20M 鐢变簬锛屸垹CDA=45掳+60掳=105掳 鍒欙紝锛氣垹DAB=180掳-105掳=75掳 AB-CD=BCxcot75掳=20cot75掳 AB=20+20cot75掳锛圡锛

宸茬煡ab涓ょ偣(鐩歌窛杩,涓斾笉鐭ラ亾鍧愭爣)瑕佸湪涓ょ偣鐩寸嚎涓婃斁鍑虹偣c(涓嶇煡閬撳潗鏍...
绛旓細鐢ㄥ叏绔欎华鑷敱寤虹珯锛屾祴閲AB鐨勫潗鏍囷細A(X1,Y1)锛孊(X2,Y2)浠嶢鐐瑰悜B鐐逛负姝ｆ柟鍚戯紝C鐐硅窛鐐笰鐨勮窛绂讳负L 鍒機鐐圭殑鍧愭爣:X3=X1+LcosJ Y3=Y1+LsinJ 娉細J 涓虹洿绾緼B鐨勫潗鏍囨柟浣嶈锛岃绠楁柟娉曡鑷鐧惧害涓涓嬧滃潗鏍囨柟浣嶈璁＄畻鈥濆叏绔欎华鏀炬牱鐐笴(X3锛孻3)鍗冲彲寰楀埌C鐐逛綅缃 ...

涓绠璋愭í娉㈠湪x杞翠笂浼犳挱,杞翠笂a銆b涓ょ偣鐩歌窛12m,t=0鏃,a鐐逛负娉㈠嘲,b鐐逛负娉...
绛旓細鍥犱负a鍦ㄦ尝宄癰鍦ㄦ尝璋凤紝鎵浠ョ粡杩囧崐涓懆鏈焌鍦ㄦ尝璋凤紝鏃犳硶鍒ゆ柇娉㈠悜閭ｄ釜鏂瑰悜浼犳挱 12=K位+位/2鍙煡K=1鏃讹紝位=8m,B姝ｇ‘ 0.5=KT+T/2褰揔=1鏃禩=0.5s C姝ｇ‘ 鍥犱负K鍊间笉瀹氾紝鎵浠ユ尝閫熶笉涓瀹氭槸D

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