A.a system with a Hydraulic Power Supply (HPS) unit
B.a system with roller guides for exhaust valves
C.a system with an electronically controlled Alpha Lubricator
D.a system directly powered by electric motor
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A.Lower fuel consumption
B.Better balanced cylinder power
C.A shorter overhaul period
D.Less smoke emission
A.too low
B.a little lower
C.a little higher
D.exactly the same
A.a little lower
B.a little higher
C.too low
D.exactly the same
A.control fuel injection time more precisely
B.control fuel injection rate more precisely
C.meet the environmental requirements
D.meet high engine speed requirements
A.big size
B.fuel economy
C.low speed
D.high power
最新試題
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
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 of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The main purpose of port State control is not to（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Cold weather starting of a diesel engine may be made easier by（）