【单选题】—I visited China year. —That interesting.
【单选题】If I______more careful, such mistake could have been avoided.
【简答题】指出循环热效率公式 η =1-Q2/Q1和 η =1-T1/T2 各自适用的范围 (T1 和T2 是指冷源和热源的温度 )
【单选题】I would have grabbed the ball if I closer to it.
【单选题】热效率的计算公式η=1-Q 1 /Q 2 适用于 工质和 循环。
【单选题】20 世纪早期,电气化,特别是( )的发展改变了传统的形式和家庭生活环境,使设计师有了更宽广的用武之地。
【单选题】I would have gone to visit him in the hospital had it been at all possible, but I ______ fully occupied the whole of last week.
【单选题】热机效率公式η=1-(Q2/Q1) 的适用范围是
【单选题】热效率的计算公式η=1-Q2/Q1 适用于 工质和 循环。