問題詳情

31. In a Carnot engine, what is the working substance?
(A) the air
(B) an ideal gas
(C) the gasoline
(D) the water vapor (steam)
(E) None of these.

參考答案

答案:B

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中