A.Dirty lube oil filter
B.Too much piston ring wear
C.High lube oil viscosity
D.Low lube oil temperature
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A.The oil oxidizes and forms carbon deposits
B.The viscosity increases
C.Engine oil consumption decreases
D.Lubricating qualities of the oil are enhanced
A.pitting
B.sludge
C.hard varnish
D.all of the above
A.increase ignition delay
B.affect fuel oil metering
C.affect engine performance at low speed
D.only disappear due to fuel oil abrasion
A.oil foaming will occur
B.large quantities of oil are consumed
C.lube oil viscosity is always decreased
D.corrosive by-products are usually formed
A.keep the parts immersed in diesel fuel
B.always keep the plunger and barrel together
C.work over a linoleum-type surface
D.all of the above
最新試題
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
The ISPS Code consists of a mandatory section-Part A, which shows（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
The condensers located in various stages of a flash evaporator are cooled by（）
The cetane rating of diesel fuel is an indication of the （）
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
（） is not installed on the main switchboar.