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桁架各杆的轴力如(

桁架各杆的轴力如(    )所示(10分)

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2021-07-17 19:20
<img src、"http://anhui.ouchn.cn/pluginfile.php/56687/question/answer/861204/29/224421/01.png" alt="" width="383" height="160">
<img src、"http://anhui.ouchn.cn/pluginfile.php/56687/question/answer/861204/29/224422/02.png" alt="" width="364" height="174">
<img src、"http://anhui.ouchn.cn/pluginfile.php/56687/question/answer/861204/29/224423/03.png" alt="" width="390" height="172">
<img src、"http://anhui.ouchn.cn/pluginfile.php/56687/question/answer/861204/29/224424/04.png" alt="" width="388" height="172">
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