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
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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
A.Used of bimetallic piston rings
B.Ring gap pre-tensioning
C.Thermal increase in ring-end clearance
D.Gas pressure acting against the back of the ring
最新試題
The ISPS Code consists of a mandatory section-Part A, which shows（）
If separating effect is not good, which measure should be taken （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which of the following items don’t belong to dock repair works?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
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.
（）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?（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
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