A.a worn water pump
B.not enough coolant
C.air in the cooling system
D.all of the above
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A.flywheel
B.crankshaft
C.journal bearings
D.camshaft
A.45
B.60
C.90
D.100
A.inside micrometer
B.feeler gauge
C.adjustable trammel
D.sighting device
A.starting air and fuel pumps
B.piston cooling pumps
C.exhaust valves
D.all of the above
A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （）
(1) MEP is lower and the scavenging air is cooling the exhaust gases
(2) valve overlap in a four-stroke
A.(1) only is correct
B.(2) only is correct
C.both (1) and (2) are correct
D.Neither (1) or (2) are correct
最新試題
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
Diesel engine control can be obtained by the bridge （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
In using reduction gears to obtain efficient propeller speeds, （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
Routine monitoring of a diesel engine should include （）.
Combustion knock occurring in a diesel engine can be caused by （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
A diesel engine piston ring face is in direct contact with the （）.