单选题Moisture in the refrigerant may （）.Afreeze on the expansion valve seat and reduce the flow of liquid refrigerantBemulsify the oil in the condenserCfreeze in the king valveDclog the oil trap
单选题
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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