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单选题
If all other conditions such as bore, stroke, speed, and mean effective pressures are equal, a two-stroke/cycle diesel engine will develop approximately（）
A
the same indicated horsepower as a four-stroke/cycle engine
B
twice the indicated horsepower as a four-stroke/cycle engine
C
one half indicated horsepower as a four-stroke/cycle engine
D
one power stroke for every two crankshaft revolutions
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更多 “单选题If all other conditions such as bore, stroke, speed, and mean effective pressures are equal, a two-stroke/cycle diesel engine will develop approximately（）A the same indicated horsepower as a four-stroke/cycle engineB twice the indicated horsepower as a four-stroke/cycle engineC one half indicated horsepower as a four-stroke/cycle engineD one power stroke for every two crankshaft revolutions” 相关考题
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考题
If all other conditions such as bore, stroke, speed, and mean effective pressures are equal, a two stroke/cycle diesel engine will develop approximatelyA.the same indicated horsepower as a four-stroke/cycle engineB.twice the indicated horsepower as a four-stroke/cycle engineC.one half the indicated horsepower as a four-stroke/cycle engineD.one power stroke for every two crankshaft revolutions
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考题
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考题
单选题（） can be found on most medium to large merchant vessels even if the main engine is either a steam turbine or 2-stroke crosshead engine.A
The medium speed 4-stroke trunk piston engineB
The low speed 2-stroke crosshead engineC
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考题
单选题The camshaft drive is designed to maintain proper camshaft speed relative to crankshaft speedIn maintaining this relationship, the camshaft drive causes the camshaft to rotate at（）A
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crankshaft speed in a two-stroke cycle diesel engineC
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单选题In a four-stroke engine the camshaft rotates at （）.A
half the engine speedB
twice the engine speedC
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four-stokeC
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单选题Each cylinder liner on the marine medium speed engines （）.A
is usually cooled by sea waterB
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考题
单选题In conventional systems, the injection pressure（）, while it’s（）in common rail diesel engines.A
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is decided by the engine speed, constant at all engine speed
考题
单选题The bore of a diesel engine cylinder describes the （）A
swept volume of the cylinderB
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考题
单选题An electrical device which prevents an action from occurring until all other required conditions are met is called a/an （）.A
limitB
monitorC
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Increased clearancesC
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考题
单选题In today’s practice, with cylinders of equal diameter of bore and equal revolutions, the two-cycle engine delivers a power about 80 percent （） than that of the four-stroke one.A
greaterB
betterC
smallerD
less
考题
单选题Which of the following statements is TRUE regarding automatic identification systems (AIS)? （）A
AIS is a short-range VHF-FM system that automatically broadcasts a vessel's position，course，speed and other safety related information to all those with similar equipment in the areaB
AIS is a one-way centrally managed system that requires the local VTS to send commands to instruct each vessel to broadcast position，course，speed and other safety related information to all those with similar equipment in the areaC
AIS is a global tracking system that relies upon INMARSAT C service to communicate vessel position，course，speed and other safety related information to all those with similar equipment in the areaD
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考题
单选题The speed of the turbocharger for a four-stroke/cycle diesel engine driving a generator at constant speed depends on the （）A
engine speedB
kilowatt loadC
fuel injection pressureD
air intake manifold temperature
考题
单选题（）uses one or two high pressure pumps for all the cylinders with one more standby, while（）have a separate high-pressure pump for each cylinder.A
A common rail engine；conventional enginesB
A conventional engine；common rail enginesC
A marine diesel engine；most other enginesD
A two-stroke engine；four-stroke engines
考题
单选题Each cylinder in a two stroke cycle engine experiences combustion（）.A
once each crankshaft revolutionB
twice each crankshaft revolutionC
every other crankshaft revolutionD
every fourth stroke
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