A.fan
B.compressor
C.condenser
D.evaporator
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A.starting air bottles
B.diesel engines
C.boilers
D.refrigeration compressors
A.below
B.above
C.equal to
D.much larger than
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
最新試題
If the suction pressure at the refrigeration compressor is below normal, the cause can be（）.
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 head pressure of a reciprocating refrigeration compressor is excessive, （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
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 （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
Which of the problems listed would came the discharge temperature of an R-12 refrigeration compressor to increase?（）
Which of the listed pumps is NOT a positive displacement pump?（）
Which of the following statements is correct concerning heat transfer?（）