单选题If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, （）.Acompressor lubrication will be improvedBoil will not leave the crankcaseCcompressor valves will be damagedDoil may congeal in the evaporator
单选题
If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, （）.
A
compressor lubrication will be improved
B
oil will not leave the crankcase
C
compressor valves will be damaged
D
oil may congeal in the evaporator
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