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
The ISPS Code consists of a mandatory section-Part A, which shows（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
Which of the following items don’t belong to dock repair works?（）
Using a file without a handle may result in （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Under MARPOL Code the ship to which it applies has to carry （）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
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?（）