A.readjust the relief valve
B.throttle the suction line
C.throttle the discharge valve
D.open the priming line
您可能感興趣的試卷
你可能感興趣的試題
A.transmitter at the steering station and a receiver at the steering engine
B.reversible motor at the steering station geared to the steering pumps
C.small induction motor on the bridge which controls the redder through pulleys
D.variable displacement hydraulic pump driven by a reversible DC motor
A.Distiller air ejector cooling medium
B.Saltwater heater discharge
C.First-stage internal feed box
D.Second-stage internal feed box
A.condenser
B.vapor generator
C.accumulator
D.evaporator
A.expansion valve to the compressor
B.receiver to the expansion coil
C.expansion valve to the evaporator
D.condenser to the expansion valve
A.leaking unloader
B.tripped circuit breaker
C.control line leak
D.defective pop valve
最新試題
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
The major source of chemical contaminants in hydraulic fluid is （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
One cause of high head pressure occurring in a refrigeration system can be （）.
A grease gun is generally used to lubricate a （）.
When the steering gear is in operation, you should （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）