A.steam stop valve
B.dry pipe
C.feedwater system
D.generating tubes
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A.an overfilled expansion tank
B.excess chromate treatment of the jacket water
C.a clogged raw water sea suction
D.cavitation erosion of the heat exchanger tubes
A.an isochronous governor
B.elastic engine mounts
C.a vibration damper
D.a cast iron bed plate with good flexible qualities
The air supplied to a diesel engine is compressed to （）
(1) provide heat for the ignition of the fuel
(2) decrease injection delay
A.(1) only is correct
B.(2) only is correct
C.both (1) and (2) are correct
D.neither (1) or (2) are correct
A.metal particles loosened by wear
B.air when no air cleaners are used
C.condensation of water vapors
D.breakdown of the lubricating oil by dilution
A.metering
B.timing
C.rate of injection
D.rate of distribution
最新試題
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
Routine monitoring of a diesel engine should include （）.
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, （）.
A diesel engine piston ring face is in direct contact with the （）.
An automated diesel engine should normally shut down due to （）
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
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?（）
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.