1 mol 理想气体在 T 1 = 400 K 的高温热源与 T 2 = 300 K 的低温热源间作卡诺循环(可逆的),在 400 K 的等温线上起始体积为 V 1 = 0.001 m 3 ,终止体积为 V 2 = 0.005 m 3 ,试求此气体在每一循环中 (1) 从高温热源吸收的热量 Q 1 (2) 气体所作的 W (3) 气体传给低温热源的热量 Q 2
【简答题】A.They should be at the age of 18 to 23. B.They should have the bachelor degree. C.They should speak fluent mother tongue and English. D.They should be single.
【简答题】阅读理解。 Has your life changed a lot? What will happen in your life in the future? Life in the 21st century will be different because many changes will take place,but what will the changes be? The popul...