单项选择题X 纠错
A.too much cooling water going through the condenser
B.not enough refrigerant in the system
C.a leak in the evaporator coils
D.no enough cooling water going through the condenser
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单项选择题
A.king valve and the expansion valve
B.solenoid valve and expansion valve
C.evaporator and receiver
D.compressor and evaporator
单项选择题
A.discharge side of condenser
B.discharge side of compressor
C.outlet of the evaporator
D.receiver tank
单项选择题
A.increase the amount of cooling water to the condenser
B.decrease the amount of cooling water to the condenser
C.add more refrigerant to the system
D.remove some of the refrigerant from the system
单项选择题
A.the relief valve should open before the high-pressure cutout
B.the relief valve should open and let excess refrigerant go to receiver
C.the high-pressure cutout switch should operate before the relief valve opens
D.close in on the suction valve
单项选择题
A.finished joints
B.welded joints
C.ground joints
D.soldered joints
单项选择题
A.a clogged scale trap
B.air in the system
C.automatic controls not functioning properly
D.insufficient cooling water to the condenser
单项选择题
A.separating chamber
B.system of baffles
C.purge valve
D.vacuum reducing valve
单项选择题
A.saltwater side of the condenser
B.refrigerant side of the condenser
C.in the evaporator coils
D.in the suction strainer
单项选择题
A.cutout
B.pressure controller
C.controller switch
D.cutout switch
单项选择题
A.remove any air that may accumulate in the system
B.take out unpleasant fumes from the refrigerant
C.vent off excess refrigerant in an emergency
D.permit opening the refrigerating system for cleaning and inspecting