單項選擇題

Generating tubes in waste heat boilers are finned to （）.

A.reduce gas flow turbulence
B.prevent exhaust gas corrosion
C.increase the rate of combustion
D.increase the rate of heat transfer

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單項選擇題

Directional intake ports in diesel engines are used to （）.

A.reduce air charge turbulence
B.induce air swirl
C.deflect hot combustion gas away from the valves
D.oppose the effects of piston induced squish

單項選擇題

Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.

A.fuel oil vapor at the sludge tank vent
B.unburned fuel vapors in the scavenge air receiver
C.lube oil vapors in the crank case
D.lube oil vapors in the engine room

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Generating tubes in waste heat boilers are finned to （）.

你可能感興趣的試題

Directional intake ports in diesel engines are used to （）.

Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.

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