单项选择题
A.liquid strainer
B.refrigerant inlet of the condenser
C.inlet side of the evaporator
D.suction side of the compressor
单项选择题 If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）
单项选择题 The clearance volume for a single stage compressor is defined as the space created between the （）.
单项选择题 Demulsibility of a lube oil is defined as （）.