图示结构,不计杆件分布质量,当 增加,则结构自振频率:( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/793f35c1b2f04efd98fc4b0f5c35a482.png
举一反三
- 图示结构,不计杆件分布质量,当 增加,则结构自振频率:( )[img=210x160]17a3ddeed2990e4.png[/img]
- 图示结构,不计杆件分布质量,当 增加,则结构自振频率:( )[img=210x160]17a3daca187387e.png[/img]
- 逻辑函数F(A,B,C)=AB+BC+AC的卡诺图为( )。 A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/7a8254757f8a4fc6ab82fa93a8e86ebf.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/229cbcade3654fb99c66a7c102ec046f.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/1c851f1288be499c92d2a7b40607bd1a.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/3b385269839a45df9645db71096c2e81.png" />
- 逻辑图和输入A,B的波形如图示,则当输出F为“1”的时刻应是( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201809/e7d9b22d0c3849cfb306dbaf68667250.png
- 图示刚架结构,不计分布质量,动力自由度个数为:( )http://image.zhihuishu.com/zhs/onlineexam/ueditor/201905/127cdfcedec6491bac438e4d6905c68a.jpg