如果卡诺热机的循环曲线所包围的面积从图中的增大为，那么循环与所作的净功和热机效率变化情况是()http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/951400ca418549bf8270113d6f2e2839.png
举一反三
- 如果卡诺热机的循环曲线所包围的面积从图中的a b c d a 增大为 a b′c′d a ，那么循环a b c d a 与a b′c′d a 所作的功和热机效率变化情况是：[img=283x206]1803df1ea37ac26.png[/img] A: 净功增大，效率提高 B: 净功增大，效率降低 C: 净功和效率都不变 D: 净功增大，效率不变
- 如果卡诺热机的循环曲线所包围的面积从图中abcda增大为ab'c'da，那么循环...dbf14ad8c6216ee3.jpg
- 卡诺热机的循环曲线所包围的面积从附图中 [tex=3.857x1.0]3bGqUqzE51LqhTozCZCibA==[/tex] 增大为[tex=4.429x1.143]4unEVAWTXPGNW+Z8Zc4V3WzMBMKb99jqJEoilN247zU=[/tex], 那么循环 [tex=3.857x1.0]3bGqUqzE51LqhTozCZCibA==[/tex] 与 [tex=4.429x1.143]4unEVAWTXPGNW+Z8Zc4V3WzMBMKb99jqJEoilN247zU=[/tex]所做的净功和热机效率的变化情况是 ( )[img=249x141]17f5d5f94e18869.png[/img] 未知类型：{'options': ['净功增大, 效率提高', '净功增大,效率降低', '净功和效率都不变', '净功增大,效率不变'], 'type': 102}
- 一定量的理想气体，在温度不变的条件下，当压强降低时，分子的平均碰撞频率<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />和平均自由程<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />的变化情况是（ ）： A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />和<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />都减小． B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />减小而<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />增大． C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />和<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />都增大． D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/5499a59dc3754bfdbf231e19c5e2edb9.png" />增大而<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/bba421d6506c4072b583fd4e63b5df81.png" />减小．
- 理想气体卡诺循环过程的两条绝热线下的面积大小（图中阴影部分）分别为<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/64280a32f9a4401f98f6b6af70e231df.png" />，则二者的大小关系是（ ）<img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/780b6d8d2ff542618f571d6996cd2cab.png" /> A: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/beb26455791a4b07bce0ac35eba22212.png" /> B: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/4bdc821d2c3946d288266564f445e908.png" /> C: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/08c97c45c5d54526a81db7c2679f8fcf.png" /> D: <img src="http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/6a476124a610477b9ebf6723989ae08c.png" />