單項選擇題

Sludge may form in the crankcase of an air conditioning compressor as a result of （）.

A.bubbling refrigerant
B.overheating and oxidation
C.lowered operating temperatures
D.reducing the cloud or flash point

你可能感興趣的試題

單項選擇題

Which of the following centrifugal pump components converts the liquid kinetic energy of velocity to the potential energy of pressure?（）

A.Impeller
B.Electric motor
C.Volute
D.Eye

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

无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

Sludge may form in the crankcase of an air conditioning compressor as a result of （）.

你可能感興趣的試題

Which of the following centrifugal pump components converts the liquid kinetic energy of velocity to the potential energy of pressure?（）

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