A.higher firing pressure
B.more power output
C.lower fuel pressure
D.less power output
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A.The chromium will not wear out the piston rings
B.The chromium strengthens the liners in the way of the scavenging air ports
C.Chromium eliminates the need for oil scraper rings
D.Pores in the plating aid in maintaining the lube oil film
A.decrease until the engine speed increases
B.increase as the load increases
C.decrease as the load
D.increases remain unchanged
A.SOLAS
B.MARPOL
C.STCW
D.Ballast Water convention
A.Lube oil is diluted and its viscosity is reduced
B.Sulfuric acid is formed
C.Bearings become pitted ad immediately fail
D.Valve stems develop sludge deposits
A.excessive surging at governed speed
B.combustion knock under load
C.poor fuel combustion
D.all of the above
最新試題
The condensers located in various stages of a flash evaporator are cooled by（）
（） is not installed on the main switchboar.
The main purpose of port State control is not to（）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Diesel engine air start system check valves are opened by （）
Which of the following items don’t belong to dock repair works?（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）