A.Impurities
B.Lube oil
C.Gasoline
D.Diesel fuel
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A.moisture
B.dirt
C.acid
D.air
A.relieve excess fuel oil pressure during the “off” fire cycle
B.admit water to the dry pipe
C.throttle the forced draft fan output for proper combustion
D.reduce excess steam pressure in the boiler
A.60 to75
B.80 to 95
C.100 to 115
D.120 to 135
A.heat conduction into the injected fuel oil
B.heat conduction into the water jacket wall
C.water circulation through passages in the holder
D.fuel oil circulation through passages in the holder
A.slightly acidic condition
B.slightly alkaline condition
C.overtreatment of water
D.neutral condition of water
最新試題
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
Proper filtering and straining of fuel oil is important because the （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
The main purpose of the piston oil scraper rings is to （）.
To determine if the lube oil filter elements need changing, （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
Combustion knock occurring in a diesel engine can be caused by （）.