单选题Excessive oil foaming in the crankcase of a refrigeration compressor can result in （）.Aoverheated compressor bearingsBexcess lube oil viscosityCcarbon deposits on the compressor piston ringsDwax crystals forming in the lubricant
单选题
Excessive oil foaming in the crankcase of a refrigeration compressor can result in （）.
A
overheated compressor bearings
B
excess lube oil viscosity
C
carbon deposits on the compressor piston rings
D
wax crystals forming in the lubricant
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