单项选择题
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
Mist detectors used on large low-speed main propulsion ...
单项选择题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
Clearance volume scavenging in a turbocharged, four-str...
单项选择题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
To prevent vibration damage to the fuel supply line of ...
单项选择题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
