A.the inlet valve is open
B.the exhaust valve is open
C.both valves are closed
D.both valves are open
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A.is running
B.stops
C.is repaired
D.lacks of oil
A.variable injection timing
B.variable inlet tonnage
C.vertical incoming tonnage
D.vertical inlet tank
A.gas oil
B.marine diesel oil
C.residue oil
D.crude oil
A.respectable
B.respectful
C.respective
D.respectively
A.pulse
B.exhaust
C.fluctuating
D.hunting
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In a simple mechanical governor, the （）.
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The minimum speed an engine must attain before ignition can occur depends upon （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
Diesel engine control can be obtained by the bridge （）.
The main purpose of the piston oil scraper rings is to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
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