A.finished joints
B.welded joints
C.ground joints
D.soldered joints
您可能感興趣的試卷
你可能感興趣的試題
A.a clogged scale trap
B.air in the system
C.automatic controls not functioning properly
D.insufficient cooling water to the condenser
A.separating chamber
B.system of baffles
C.purge valve
D.vacuum reducing valve
A.saltwater side of the condenser
B.refrigerant side of the condenser
C.in the evaporator coils
D.in the suction strainer
A.cutout
B.pressure controller
C.controller switch
D.cutout switch
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
最新試題
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
The condensers located in various stages of a flash evaporator are cooled by（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
The shipboard oil pollution emergency plan will be invalid after （）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Using a file without a handle may result in （）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）