A.reciprocating
B.hydraulic
C.turbine
D.vane
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A.a level controller
B.a temperature switch
C.a pressure switch
D.a floating ball
A.a hoisting motor
B.a luffing motor
C.a mooring motor
D.a slewing motor
A.the drive pump
B.the drive motor
C.the warp end
D.the purchase
A.windlass
B.anchor capstan
C.turning gear
D.winch barrel
A.A capstan
B.A hold
C.A warp end
D.A mooring drum
最新試題
Low compressor head pressure in a refrigeration system can be caused by（）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
The output volume of a positive fixed displacement pump can be changed only by （）.
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
A salinity indicator is used to determine the （）.
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.
The amount of fluid friction or internal friction inherent in a mineral lubricating oil is reflected as a measure of its （）.
The usual symptoms of cavitation in a centrifugal pump is （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.