A.corrosion fretting
B.insufficient lubrication
C.abnormal wear
D.fatigue failure
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A.sludge
B.water
C.micro-organism growth
D.all of the above
A.burned exhaust valves
B.excessive spring compression
C.spring surge
D.worn valve seats
A.worn valve seats
B.worn main bearing
C.excessive valve clearance
D.weak rocker arm springs
A.spark from a plug in the pre-combustion chamber
B.electrical discharge from the distributor
C.heat of compression within the cylinder
D.heat from the fuel injection nozzle
A.engine operating speed
B.an air manifold
C.a hydraulic distributor
D.individual cams and valve gear
最新試題
Using a file without a handle may result in （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The ISPS Code consists of a mandatory section-Part A, which shows（）
To proceed to the assistance of a ship in distress is（）
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
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.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The treatment of the fuel oils involves storage, heating, filtering and（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）