图示圆柱体与空心圆柱孔面交线的俯视投影和左视投影都是在圆上。
举一反三
- 图示圆柱体与空心圆柱孔面交线的俯视投影和左视投影都是在圆上。https://im...ba750075ff6bc088.png
- 图示圆柱体与空心圆柱孔面交线的俯视投影和左视投影都是在圆上。[img=168x161]17a41190a7f1e8a.png[/img]
- 如图所示电路的逻辑表达式F=（ ）。<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/8655693a417e4e43a32e0732ed533c96.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/beda73211aea49f082d9137fd4eb0526.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/7388c99ee0824f20bcf85893934a2f6a.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/9a5c81e78b344c79a9389e932a7f55ce.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/82193a9a030243728012b02e15718987.png" />
- 外径为D、内径为d的空心圆轴，其扭转截面系数为（ ）。 A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/af42d1bd70034c0d85f2f419a2839f22.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/2e74a84c10d14288a269b7b8def735f1.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/55aca62def3e4c9485e9b0894a63a342.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/6ed4e2143b6a4c82ad03319473bb6a3a.png" />
- 如图示并联管路，已知各支路的沿程阻力系数之比为<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/6e209020d20f4543823ce6516ae8ca06.png" />，管长之比为<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/50814fe028094040bc955d8e1542b6d2.png" />，且<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/40b4c6a9565b483590c5c7d607e7ed66.png" />，则两支管的流量之比<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1055534bfce6426a94682ba086a5b17e.png" />=（）。<img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/77815369f5cd41f3a2e68b9524b454c5.png" /> A: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/0cd231eebe45465f941a0f614743e6d2.png" /> B: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/7555afa5223e40bf89ca575cf7b52754.png" /> C: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/1b06cd474b844644a6d97ad87d208e94.png" /> D: <img src="https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/d0b2bca045414236a7d1c9925a9264f2.png" />