单项选择题
A.reclaims water B.purges air without losing refrigerant C.purges air with some loss of refrigerant D.purges lube oil from the refrigerant
The device, which is installed in the compressor suctio...
单项选择题The device, which is installed in the compressor suction line to prevent liquid from entering the compressor when hot gas defrosting, is called a（）
A.re-evaporator B.receiver C.dehydrator D.solenoid
The humidity of the atmosphere can be determined by the...
单项选择题The humidity of the atmosphere can be determined by the use of the（）
A.anemometer B.potentiometer C.manometer D.psychrometer
In a centrifugal Freon refrigeration system, the overal...
单项选择题In a centrifugal Freon refrigeration system, the overall capacity of the system is increased by（）
A.opening more bypass lines B.opening additional expansion valves C.adding refrigerant D.speeding up the machine
