A.increased pump speed
B.excessive pump discharge pressure
C.too low of a tilting box angle
D.low pump speed
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A.Lube oil passing through the system
B.Moisture or foreign matter collecting at the valve seat and orifice
C.Variable spring tension caused by the changing temperature
D.Frost on the liquid line
A.an immediate crankcase explosion
B.oil contamination in the compressed air
C.a decrease in compressor capacity
D.no immediate loss of the compressed air capacity
A.The density of the air entering the compressor
B.The temperature of the air entering the compressor
C.The designed rotating speed of the compressor
D.A leaking head gasket
A.Differential
B.Trunk
C.Barrel
D.Valve-in-head
A.return to a neutral position
B.flood the evaporator
C.open
D.close
A.control air system
B.forced draft air system
C.supply air system
D.ships service air system
A.dehydrated
B.purged
C.plugged
D.evacuated
A.combustion control air system
B.supply air system
C.ships service air system
D.low pressure deck air system
A.dry bulb temperature
B.wet bulb temperature
C.saturation temperature
D.water vapor superheat
A.The follow-up gear
B.The rudder angle indicator
C.The synchronous electric transmitter
D.A rudder angle limit switch
最新试题
Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?()
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will ().
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should ().
A salinity indicator is used to determine the ().
The control mode in which the final control element is moved from one of two flexed positions to the other is known as ().
If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump ().
A salinity indicator is used to determine the ().
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 ().
An increasing head pressure in a refrigeration system, without any corresponding change in the cooling water inlet temperature, would probably be caused by ().
Which of the listed pumps is NOT a positive displacement pump?()