單項選擇題

In a refrigeration system, foaming of the crankcase oil may cause the （）.

A.expansion valve to overfeed
B.compressor to knock
C.water regulating valve to fail
D.crankcase drains to plug

你可能感興趣的試題

單項選擇題

Excessive scale formation in a distilling plant may result from （）.

A.poor distillate quality
B.reduced evaporator capacity
C.low brine concentration
D.improper vacuum regulation

單項選擇題

Foaming of the oil in a refrigeration compressor crankcase is caused by （）.

A.refrigerant boiling out of solution from the lube oil
B.liquid refrigerant flooding the compressor and system
C.lube oil viscosity being reduced by refrigerant dilution
D.compressor suction pressure suddenly increasing

99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

In a refrigeration system, foaming of the crankcase oil may cause the （）.

你可能感興趣的試題

Excessive scale formation in a distilling plant may result from （）.

Foaming of the oil in a refrigeration compressor crankcase is caused by （）.

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精