单项选择题
A.Sub-cooled liquid B.Sub-cooled vapor C.Superheated vapor D.Liquid
The heat removed from the refrigerant in the condenser ...
单项选择题The heat removed from the refrigerant in the condenser of a refrigeration plant is the （）
A.latent heat of expansion B.sensible heat of condensation C.heat of compression D.all of the above
An important consideration in selecting a lubricating o...
单项选择题An important consideration in selecting a lubricating oil for use in a refrigeration compressor is for the oil to （）
A.have a high viscosity index B.mix readily with refrigerant C.have a high freezing point D.have a low pour point
Properties of a good refrigeration oil include（）A.low w...
单项选择题Properties of a good refrigeration oil include（）
A.low wax content B.high pour point C.high viscosity D.all of the above
