A.high discharge pressure
B.frosting of the crankcase
C.high temperature of the overboard water
D.low suction pressure of compressor
您可能感兴趣的试卷
你可能感兴趣的试题
A.upper part of the receiver
B.upper part of the condenser
C.down stream end of the cooling coil
D.outlet end of the condenser
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
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
A.displacement
B.weight
C.power
D.capacity
A.should be paved
B.should be cleaned
C.should be dismantled
D.should be welded
A.fulfill
B.eliminate
C.grease
D.bend
最新试题
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.
A pressure drop through the refrigerant liquid line may cause （）.
A grease gun is generally used to lubricate a （）.
The general purpose of a heat exchanger is to （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
Thermostatic expansion valves can be adjusted for （）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
Which of the following statements is correct concerning heat transfer?（）
One cause of high head pressure occurring in a refrigeration system can be （）.