在容积
的容器中，装有压强
的理想气体，则容器中气体分子的平动动能总和为（ ）
A: 3J
B: 9J
C: 2J
D: 5J
的容器中，装有压强的理想气体，则容器中气体分子的平动动能总和为（ ）A: 3J
B: 9J
C: 2J
D: 5J
举一反三
- 在容积<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/6945727d42a4490ea38fed47c280c385.png" />的容器中，装有压强<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/ae328915498f444fb5282abc331aaad4.png" />Pa的理想气体，则容器中气体分子的平动动能总和为（ ）： A: 3 J B: 2 J C: 5 J D: 9 J
- 简支梁受载荷并取坐标系如图所示，则弯矩M，剪力Fs与分布载荷q之间的关系以及挠曲线近似微分方程为（ ）？<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/138661fa31514ec18f3260ea016751ba.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/c9a73bdd6deb4aab9f9896630a771c20.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/c71656ece7e440d98230ae56ffb09033.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/d2d3cc05628d40ca87ed8b079bf4b5db.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/221b51adf2024d8ab8fdc9963e10d940.png" />
- 直径为d的圆截面钢杆受轴向拉力作用，已知其纵向线应变为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/767e7380667c4d688dc6c10aaf9ef9ca.png" />，弹性模量为E，给出杆轴力的四种答案，问哪一种是正确的？ A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/8f37f5bc2dc94791b84f000092e493b3.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/073a4958352c4951b6171383bc4ca238.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/85f164582f934227b4bbb5ee0a7267dc.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201801/95e66fa0756f4ffd8c0ae368c0c88564.png" />
- 如图所示，一定量的理想气体经历ACB过程时吸热700 J，则经历ACBDA过程时吸热为 ( )<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/e0addc2856f544a38385e22c7fe40140.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/6318b705925d418dabb63864c84c21d6.png" />700 J B: 700 J C: 500 J D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201908/14267ad5d137451a8a7c963dfc9d6ec1.png" />500 J
- 内压球形容器的应力为： A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/7a7e20156c8c4502840fc258ffe21c74.png"> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/6b137ba6e7464b2c8122eced2a3d45cd.png"> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/3c032f5116a04b288400df17925e39c2.png"> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/85ca21668f4045e2b864897bc3795fdf.png">