A.big size
B.fuel economy
C.low speed
D.high power
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A.at high speed and full load
B.at low speed and part load
C.when heavy fuel oil is used at sea
D.when the ships run long distance
A.can’t be controlled very precisely
B.can’t be controlled as flexibly as the separate pump system
C.can be controlled as flexibly as the separate pump system
D.can be controlled more precisely and flexibly
A.A common rail engine；conventional engines
B.A conventional engine；common rail engines
C.A marine diesel engine；most other engines
D.A two-stroke engine；four-stroke engines
A.by injection pumps
B.at a time decided by the injection pump timing
C.by a signal opening the magnetic valves
D.at a time decided by the cam directly
A.stored in a common fuel line
B.pumped by the injection pump
C.at low pressure
D.already atomized
最新試題
If separating effect is not good, which measure should be taken （）
Diesel engine air start system check valves are opened by （）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
The condensers located in various stages of a flash evaporator are cooled by（）
Cold weather starting of a diesel engine may be made easier by（）
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
（） is not installed on the main switchboar.
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