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
单项选择题 An important consideration in selecting a lubricating oil for use in a refrigeration compressor is for the oil to （）
单项选择题 Properties of a good refrigeration oil include（）
单项选择题 Proper filtering and straining of diesel fuel is important because the（）
