A.increase
B.decrease
C.remain the same
D.increase on compression decrease on expansion
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A.ignition quality of the fuel
B.high heating value of the fuel
C.amount of carbon residue after combustion
D.internal flow resistance in the injectors
A.has little or no internal friction
B.has a lower effective compression ratio
C.operates with scavenge air under a positive pressure
D.operates without energy absorbing intake and exhaust strokes
A.Decreased connecting rod bearing clearance
B.Increased connecting rod bearing clearance
C.Decreased compression ratio
D.Increased compression ratio
A.less fuel will enter the cylinder
B.higher the cylinder combustion temperature
C.more complete the fuel combustion
D.more rapid the rise in combustion pressure
A.dust entering the high pressure stage
B.lube oil carbonization
C.discharge pulsations
D.inter-stage vapor lock
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When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
The condensers located in various stages of a flash evaporator are cooled by（）
Which of the following items don’t belong to dock repair works?（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
（） is not installed on the main switchboar.