膨胀机的效率高低取决于膨胀机的()
A.转速
B.进口温度
C.各种损失
D.压力降
参考答案:C
The man was charged for blowing______some government buildings in Baghdad.
A.up
B.down
C.out
D.over
餐饮具集中消毒单位必须具有哪些基本设备?