A.of
B.up of
C.from
D.out
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A.piston skirt
B.piston crown
C.guide way
D.cross-head
A.between；to
B.either；or
C.from；to
D.neither；nor
A.to help
B.to limit
C.to protect
D.to remove
A.a reduction
B.an increase
C.an outing
D.a downwards
A.cylinder cover
B.cylinder block
C.cylinder frame
D.bed-plate
最新試題
The minimum speed an engine must attain before ignition can occur depends upon （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
The main purpose of the piston oil scraper rings is to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that 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?（）
In a simple mechanical governor, the （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.