问题详情

(5.1)1杆的轴力FN1=(    )所示(3分)


<img src、"http://hebei.ouchn.cn/pluginfile.php/56687/question/answer/533580/31/224425/01.png" alt="" width="85" height="56">

<img src、"http://hebei.ouchn.cn/pluginfile.php/56687/question/answer/533580/31/224426/02.png" alt="" width="83" height="64">

<img src、"http://hebei.ouchn.cn/pluginfile.php/56687/question/answer/533580/31/224427/04.png" alt="" width="65" height="61">

<img src、"http://hebei.ouchn.cn/pluginfile.php/56687/question/answer/533580/31/224428/002.png" alt="" width="72" height="64">

时间:2021-07-17 19:14 关键词:

答案解析

<img src="http://hebei.ouchn.cn/pluginfile.php/56687/question/answer/533580/31/224425/01.png" alt="" width="85" height="56">