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單項(xiàng)選擇題

Condensate formed within the first-effect tube nest of a double-effect,low pressure evaporator, is removed by a （）.

A.series of baffles
B.crossover pipe
C.condensate separator
D.drain pump

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單項(xiàng)選擇題

The temperature of a refrigerant gas is the highest （）.

A.at the compressor discharge
B.at the compressor suction
C.in the expansion valve
D.in the receiver

單項(xiàng)選擇題

Which of the listed pressure control valves would be used to establish the maximum operating pressure of a hydraulic system?（）

A.Pressure-reducing valve
B.Unloading valve
C.Counterbalance valve
D.Pressure-relief valve

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