If you change from a low pour point lubricant to a high pour point lubricant in a refrigeration system, （）.<br>A:compressor lubrication will be improved<br>B:oil will not leave the crankcase<br>C:compressor valves will be damaged<br>D:oil may congeal in the evaporator

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

出自：海船船员证

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