题目内容
卡诺热机的高温热源温度为600K，低温热源温度为300K，则该热机的循环效率为
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理想气体经等温膨胀过程，内能增加。
理想气体膨胀相同的体积，绝热过程比等温过程压强下降得快。
根据热力学第一定律可知，理想气体经等压压缩过程，该系统的热量、内能变化、做功均为负。
[音频]P:Southwest 2060 with you on _____ 28LC:Southwest 2060San Francisco, Runway 28L, cleared to land, ______.P: cleared to land 28L, Southwest 2060P:Southwest 2060_______C: Southwest 2060understand ______, _________P: _______Southwest 2060C: and were you just _____ or ______t?P: you know, we got a ________of the other trafficC: okay, no problem. And you can contact Norcal departure on ____P: ____ thank you
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