单项选择题

Moisture in the refrigerant may （）.

A.freeze on the expansion valve seat and reduce the flow of liquid refrigerant
B.emulsify the oil in the condenser
C.freeze in the king valve
D.clog the oil trap

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单项选择题Moisture is removed from a refrigeration system by（）.

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B.opening a drain petcock on the oil separator
C.condensing the water in the heat exchanger
D.using a dehydrator cartridge

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船舶辅助机械

Moisture in the refrigerant may （）.