單項(xiàng)選擇題

Sweating of the refrigeration system compressor crankcase is caused by （）.

A.too much superheat
B.insufficient superheat
C.suction pressure too low
D.excessive refrigerant returning to the compressor

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單項(xiàng)選擇題

Which bearing will carry the load on two small points diametrically opposite to each other?（）

A.Needle
B.Tapered roller
C.Roller
D.Ball

單項(xiàng)選擇題

Refrigeration system compressor crankcase sweating is an indication of （）.

A.insufficient lube oil circulating through the system
B.excessive circulation of lube oil through the system
C.insufficient refrigerant in the system
D.an overworked compressor

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Sweating of the refrigeration system compressor crankcase is caused by （）.

你可能感興趣的試題

Which bearing will carry the load on two small points diametrically opposite to each other?（）

Refrigeration system compressor crankcase sweating is an indication of （）.