單項選擇題

Excessive circulation of the lubricating oil with the refrigerant in a refrigeration system will cause （）.

A.carbon deposits on the compressor suction valves
B.the evaporator temperature to increase
C.rapid corrosion of the thermal expansion valve
D.no operating problems

你可能感興趣的試題

單項選擇題

Scale accumulation on evaporator heat exchange surfaces （）.

A.increases brine density
B.increases distillate salinity
C.reduces metal corrosion
D.reduces heat transfer

單項選擇題

In order to properly remove air from the casing of a centrifugal pump when starting, the pump should have a （）.

A.positive head
B.negative suction head
C.mechanical seal
D.vent valve attached to the casing at the top of the volute

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区 狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

Excessive circulation of the lubricating oil with the refrigerant in a refrigeration system will cause （）.

你可能感興趣的試題

Scale accumulation on evaporator heat exchange surfaces （）.

In order to properly remove air from the casing of a centrifugal pump when starting, the pump should have a （）.

97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久