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
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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
最新試題
A grease gun is generally used to lubricate a （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
The rate of heat transfer from a hot region to a cold region is affected most by the （）.
An excessive charge of refrigerant in an air-cooled refrigeration system can cause （）.
If the thermal bulb of an expansion valve is incorrectly placed at the center of the coil instead of the end, it will （）.
A salinity indicator is used to determine the （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
A gradual decrease in the discharge pressure of an operating hydraulic pump can be caused by （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.