单选题Refrigeration system compressor crankcase sweating is an indication of （）.Ainsufficient lube oil circulating through the systemBexcessive circulation of lube oil through the systemCinsufficient refrigerant in the systemDan overworked compressor
单选题
Refrigeration system compressor crankcase sweating is an indication of （）.
A
insufficient lube oil circulating through the system
B
excessive circulation of lube oil through the system
C
insufficient refrigerant in the system
D
an overworked compressor
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