A.the flashing of the feed water
B.the condensation of the saltwater feed
C.air ejectors, eductors, or a separate vacuum pump
D.condensation of the distillate
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A.under heavy loads
B.during hot gas defrost
C.under light loads
D.during starting conditions
A.Excessive compression in the cylinder
B.A broken intake valve
C.A dirty inlet filter element
D.An improperly adjusted discharge valve
A.Constant tension mooring winch system
B.Hatch cover system
C.Watertight door system
D.Internal combustion engine hydraulic starter system
A.Carbon build up in the piston ring belt
B.Faulty operation of a cylinder un-loader
C.Compressor operation in an area of high relative humidity
D.Lifting of intercooler rebel valve
A.system was overcharged with refrigerant
B.system was low on refrigerant
C.suction valves were leaking slightly
D.relief valve was leaking slightly
A.broken inlet valves
B.broken discharge valves
C.pulsations in the air distribution system
D.overloading of the air distribution system
A.warping head
B.fairlead
C.wildcat
D.capstan
A.system was overcharged with refrigerant
B.high pressure switch was improperly adjusted
C.expansion valve strainers were fouled
D.suction valves were leaking slightly
A.increased pump speed
B.excessive pump discharge pressure
C.too low of a tilting box angle
D.low pump speed
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
最新试题
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
The output volume of a positive fixed displacement pump can be changed only by （）.
The usual symptoms of cavitation in a centrifugal pump is （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
Which of the following statements is correct concerning heat transfer?（）
The major source of chemical contaminants in hydraulic fluid is （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
The general purpose of a heat exchanger is to （）.
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.