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An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.

A、restriction in refrigerant piping

B、air and non-condensable gases in the condenser

C、water in the refrigerant

D、flooding back of liquid refrigerant from the evaporator

时间：2022-01-05 23:26 关键词： 船舶辅助机械

答案解析

B