图示拉伸（压缩）杆1－1截面的轴力为（）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/0eced2ba80924341a195625566a63463.png
举一反三
- 图示拉伸（压缩）杆1－1截面的轴力为（）。http://image.zhihui...a195625566a63463.png
- 图示桁架1杆的轴力为零。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201906/163a758d5d0c46e78393266a6a4dafc9.png
- 图示桁架中杆1的轴力为（ ）http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/f6bd8239e7a2488e825ea4627929f513.jpg
- 已知串联支路为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/65b91bc067d14873a38d0c4675b53329.png"/> ， ，则其传递函数为（ ） A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/8bc361d7b437451dac5c0c42c3213311.png"/> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/7db9751653e24eba9f152b6937c8c256.png"/> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/a4b7ab7e122b40068ce6b78635486bae.png"/> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/a6b34e5a8a764d5c9b78c725d7b77ed4.png"/>
- 假设面心立方晶体的晶胞参数为a，则（111）面的原子密度为（ ）。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/868b8bc10dea4b11a7056f990d67b8ea.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/29d88b05cb5b42909a7b9d27f13b8fcd.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/c178174fcfcc485395dca41757c07354.png"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201902/5b6326521871496ea8f698ef4da926f7.png">