A.natural aspiration
B.masked intake valves
C.air cells
D.scavenging air
您可能感興趣的試卷
你可能感興趣的試題
A.excessive lube oil consumption
B.lower than normal lube oil temperature
C.higher than normal exhaust back pressure
D.excessive crankshaft end play
A.twice as large as with a cast iron piston
B.the same size as with a cast iron piston
C.half as large as with a cast iron piston
D.the same size as the crown of an aluminum piston
A.increase back pressure during the exhaust process
B.facilitate periodic replacement of the valves
C.reduce the pumping loss associated with scavenging
D.reduce tension on valve springs
A.excessive ring action
B.excessive ring temperature
C.improper ring rotation
D.excessive ring face wear
A.higher speed required
B.flywheel-effect
C.lower starting temperatures
D.higher compression pressures
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Cold weather starting of a diesel engine may be made easier by（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
Using a file without a handle may result in （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
The treatment of the fuel oils involves storage, heating, filtering and（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
（） is not installed on the main switchboar.
The main purpose of port State control is not to（）