单项选择题
A.above B.below C.equal to D.None of the above
The function of （） in a refrigeration plant using Freon...
单项选择题The function of （） in a refrigeration plant using Freon is to move moisture from all refrigeration system.
A.filter B.filter drier C.heat exchanger D.air cooler
The boiling and condensation points of refrigerant main...
单项选择题The boiling and condensation points of refrigerant mainly depend on the （） exerted upon it.
A.temperature B.density C.volume D.pressure
In a compression refrigeration plant the refrigerant is...
单项选择题In a compression refrigeration plant the refrigerant is under low pressure in the （） and under high pressure in the （）.
A.compressor；condenser B.condenser；evaporator C.throttle valve；evaporator D.evaporator；condenser
