A.icing of the automatic controls
B.embrittlement of some parts of the automatic controls
C.sludge in the lubricating oil
D.all of the above
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A.low water level
B.high water level
C.excessively high fuel pressure
D.low oil temperature
A.excessive water in the bilges
B.a clogged suction strainer
C.oil in the bilges
D.All of the above
A.in the store room
B.in the cylinder
C.in the scavenge air box
D.in the water box
A.carry off
B.carry down
C.carry on
D.carry over
A.gravity
B.diameter
C.circumference
D.cylinder
最新試題
Which of the listed pumps is NOT a positive displacement pump?（）
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
When the steering gear is in operation, you should （）.
Which of the following statements is correct concerning heat transfer?（）
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
The major source of chemical contaminants in hydraulic fluid is （）.
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by （）.