单项选择题X 纠错
A.temperature and pressure
B.humidity and temperature
C.pressure and vacuum
D.pressure and humidity
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单项选择题
A.capacity of 0%
B.efficiency of 100%
C.internal slippage of 0%
D.shut off horsepower rating of 100%
单项选择题
A.series of baffles
B.crossover pipe
C.condensate separator
D.drain pump
单项选择题
A.at the compressor discharge
B.at the compressor suction
C.in the expansion valve
D.in the receiver
单项选择题
A.Pressure-reducing valve
B.Unloading valve
C.Counterbalance valve
D.Pressure-relief valve
单项选择题
A.motor overload would open
B.relief valve would open
C.pump would eventually overheat
D.motor would overheat
