A.screwing into
B.being screw on
C.to screw on
D.screwed into
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A.bolts welded into the cylinder head
B.bolts welded into the cylinder frames
C.studs screwed into the cylinder head
D.studs screwed into the cylinder frames
A.fuel valve
B.lubricator
C.indicator valve
D.the starting valve
A.the beginning of the compression stroke
B.the beginning of the suction stroke
C.the end of the working stroke
D.the end of the exhaust stroke
A.repeatedly
B.quickly
C.gradually
D.immediately
A.forged
B.tapering
C.drilling
D.boring
最新試題
An automated diesel engine should normally shut down due to （）
The function of diesel engine piston compression rings is to （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Proper filtering and straining of fuel oil is important because the （）.
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?（）
A thrust bearing is used with a propulsion diesel engine to （）.
What is the function of the thrust bearing?（）
The main purpose of the piston oil scraper rings is to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.