A.an electric motor
B.a diesel engine
C.a compressor
D.oil
您可能感興趣的試卷
你可能感興趣的試題
A.large size of oil globule
B.low temperature
C.high viscosity
D.high flow rate
A.with dirty water
B.with clean water
C.by oily water
D.by mixed water
A.upwards
B.downwards
C.outwards
D.forwards
A.bowl periphery
B.bowl center
C.upper surface
D.lower surface
A.bowl periphery
B.bowl center
C.upper surface
D.lower surface
最新試題
The output volume of a positive fixed displacement pump can be changed only by ().
The major source of chemical contaminants in hydraulic fluid is ().
The usual symptoms of cavitation in a centrifugal pump is ().
The control mode in which the final control element is moved from one of two flexed positions to the other is known as ().
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?()
If you are given the job of adding hydraulic fluid to a mooring winch, and are not certain as to the type of fluid to use, you should ().
A salinity indicator is used to determine the ().
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?()
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?()
A grease gun is generally used to lubricate a ().