单项选择题
A.Distiller air ejector cooling medium B.Saltwater heater discharge C.First-stage internal feed box D.Second-stage internal feed box
The component of a refrigerating system in which the re...
单项选择题The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the （）.
A.condenser B.vapor generator C.accumulator D.evaporator
The low pressure side of a refrigeration system is cons...
单项选择题The low pressure side of a refrigeration system is considered to exist from the （）.
A.expansion valve to the compressor B.receiver to the expansion coil C.expansion valve to the evaporator D.condenser to the expansion valve
If the electric motor driving an air compressor fails t...
单项选择题If the electric motor driving an air compressor fails to start, the cause may be a （）.
A.leaking unloader B.tripped circuit breaker C.control line leak D.defective pop valve
