A.Relief valves
B.Check valves
C.Safety valves
D.Reducing valve
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A.Hydraulic pumps
B.Valve
C.Hydraulic cylinders
D.Hydraulic motors
A.The hydraulic pumps
B.Valves
C.Hydraulic cylinders
D.Hydraulic motors
A.cast
B.put
C.hold
D.let out
A.Cargo winches
B.Mooring winches
C.Windlasses
D.Cargo hatches
A.lift
B.put
C.take
D.hold
最新試題
When the steering gear is in operation, you should （）.
The major source of chemical contaminants in hydraulic fluid is （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
A salinity indicator is used to determine the （）.
The general purpose of a heat exchanger is to （）.
Which of the listed pumps is NOT a positive displacement pump?（）
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.