A.pre-injection fuel oil treatment
B.lube oil filtration
C.lube oil purification
D.piston cooling
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A.their free-floating design
B.their relatively small size
C.the reciprocating motion of the piston
D.their position in the lubrication system
A.hinged rain guards
B.corrosion resistant flame screens
C.dipsticks for measuring oil levels
D.crankcase ventilation fans
A.aluminum plates
B.lead cathodes
C.copper baffle plates
D.sacrificial zincs
A.bearing pressure in a four-stroke\cycle acting single diesel engine is continually reversed
B.bearing pressure in a two-stroke\cycle single acting diesel engine is continually reversed
C.the maximum bearing pressure is higher in a single acting two-stroke/cycle diesel engine
D.two-stoke/cycle diesel engines require more complicated lubrication piping
A.Common-rail injection
B.Air injection
C.Jerk pump injection
D.Distribution injection
最新試題
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The main purpose of port State control is not to（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
Diesel engine air start system check valves are opened by （）
The cetane rating of diesel fuel is an indication of the （）
If separating effect is not good, which measure should be taken （）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）