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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單項選擇題

Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.

A.during the valve overlap period
B.with only the exhaust valve open
C.at a pressure below atmospheric
D.without cooling the cylinders or pistons

單項選擇題

To prevent vibration damage to the fuel supply line of a diesel engine, you may use （）.

A.a short length of heavy duty clear plastic tubing
B.a length of approved flexible nonmetallic hose
C.welded flange connections for all joints
D.aluminum piping with expansion loops

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

你可能感興趣的試題

Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished （）.

To prevent vibration damage to the fuel supply line of a diesel engine, you may use （）.

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