[考題] 國營工程力學
題目如下:
http://ppt.cc/W3nA
答案是A
我的想法是伸長量為PL/AE
可是這題我想不到怎麼解
又好像不是很難...
但就是算不出來
能否請版友幫忙解惑
感謝
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推
05/27 22:51, , 1F
05/27 22:51, 1F
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05/27 22:54, , 2F
05/27 22:54, 2F
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05/27 23:03, , 3F
05/27 23:03, 3F
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05/27 23:08, , 4F
05/27 23:08, 4F
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05/27 23:10, , 5F
05/27 23:10, 5F
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05/27 23:12, , 6F
05/27 23:12, 6F
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05/27 23:15, , 7F
05/27 23:15, 7F
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05/27 23:15, , 8F
05/27 23:15, 8F
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05/27 23:17, , 9F
05/27 23:17, 9F
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05/27 23:28, , 10F
05/27 23:28, 10F
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05/27 23:31, , 11F
05/27 23:31, 11F
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05/27 23:32, , 12F
05/27 23:32, 12F
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05/27 23:36, , 13F
05/27 23:36, 13F
推
05/27 23:37, , 14F
05/27 23:37, 14F
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05/27 23:39, , 15F
05/27 23:39, 15F
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05/27 23:40, , 16F
05/27 23:40, 16F
推
05/27 23:46, , 17F
05/27 23:46, 17F

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05/27 23:46, , 18F
05/27 23:46, 18F
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05/27 23:47, , 19F
05/27 23:47, 19F

推
05/27 23:50, , 20F
05/27 23:50, 20F
推
05/28 21:24, , 21F
05/28 21:24, 21F
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05/28 21:25, , 22F
05/28 21:25, 22F
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05/28 21:26, , 23F
05/28 21:26, 23F
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