A.below
B.above
C.equal to
D.much larger than
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A.starting the ME
B.starting the emergency electric alternator
C.driving the main turbine
D.driving the turbocharger
A.air compressor
B.refrigeration compressor
C.vacuum pump
D.purifier
A.boiling off
B.flash evaporation
C.condensation
D.none of the above
A.to cut down the amount of cooling water needed
B.to prevent an excess amount of cooling water from being discharged to the bilges
C.to supply hot water to the evaporator for more economical operation
D.None of the above is tree
A.to decrease scale formation
B.for better cooling effect
C.for more economical purpose
D.to raise vacuum
A.a brine pump
B.an air ejector
C.a feed water pump
D.a condensate pump
A.a brine pump
B.an air ejector
C.a feed pump
D.distillate pump
A.dispose
B.dissolve
C.heat
D.dissipates
A.Evaporation
B.Circulation
C.Condensation
D.Distillation
A.Hydraulic oil
B.Animal oil
C.Light oil
D.Fuel oil
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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?()
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of ().
The output volume of a positive fixed displacement pump can be changed only by ().
Which of the following statements is correct concerning heat transfer?()
The rate of heat transfer between the hot and cold fluids passing through a shell-and-tube type heat exchanger will ().
The rate of heat transfer from a hot region to a cold region is affected most by the ().
When the steering gear is in operation, you should ().
The temperature differential occurring between the inlet temperature of the fluid to be cooled and the outlet temperature of the cooling medium in a shell-and-tube heat exchanger is greatest in which of the flow designs listed?()
A salinity indicator is used to determine the ().
Low compressor head pressure in a refrigeration system can be caused by().