A.absolute humidity
B.specific humidity
C.effective humidity
D.relative humidity
您可能感興趣的試卷
你可能感興趣的試題
A.drain water from the air receiver
B.drain water from the cylinders
C.delay the compression process until the motor is up to speed
D.check pump alignment
A.face shield
B.a respirator
C.rubber gloves
D.an all purpose gas mask
最新試題
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
The general purpose of a heat exchanger is to （）.
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
The usual symptoms of cavitation in a centrifugal pump is （）.