A.Because the piston is exposed to very high temperature, it must be cooled
B.The lower the piston cooling temperature is, the better it is
C.Both water and lube oil can be used as coolant
D.One of the piston cooling methods is vibration cooling, with better effect
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A.crankshaft
B.piston
C.connecting rod
D.bearing
A.steam engine
B.steam turbine
C.gas turbine
D.diesel engine
A.100 rpm
B.200 rpm
C.300 rpm
D.500 rpm
A.read/sufficient
B.consult/sufficiently
C.read/sufficiently
D.consult/sufficient
A.the distance between them remains the same
B.the distance between them is changing
C.the position between them is not changing
D.their positions to the earth remain the same
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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
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If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
In using reduction gears to obtain efficient propeller speeds, （）.
Proper filtering and straining of fuel oil is important because the （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
The minimum speed an engine must attain before ignition can occur depends upon （）.