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單項(xiàng)選擇題

Air or noncondensable gas is removed from a refrigeration system by a （）

A.separating chamber
B.system of baffles
C.purge valve
D.vacuum reducing valve

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單項(xiàng)選擇題

Where are the zinc plates located?（）

A.saltwater side of the condenser
B.refrigerant side of the condenser
C.in the evaporator coils
D.in the suction strainer

單項(xiàng)選擇題

The device used for low-pressure control and high-pressure cutout on a compressor is called a（）

A.cutout
B.pressure controller
C.controller switch
D.cutout switch

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