单项选择题
Which of the listed components is considered to separate the high pressure side of a refrigeration cycle from the low pressure side of the cycle?（）
A.The condenser and the expansion valve B.The king valve and the solenoid valve C.The compressor and the expansion valve D.The condenser and the solenoid valve
单项选择题 A compound gage is used to measure （）.
单项选择题 A centrifugal pump attempting to develop flow against a closed discharge valve has a/an （）.
单项选择题 Condensate formed within the first-effect tube nest of a double-effect,low pressure evaporator, is removed by a （）.
