單項(xiàng)選擇題Fuel has been injected but ignition fails The possible cause may be （）.
A.leaky exhaust valve
B.increased scavenging air temperature
C.engine cylinders not scavenged sufficiently
D.water in the fuel oil
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1.單項(xiàng)選擇題Fresh water is used for the cooling of cylinder jackets and （） of the marine diesel engine.
A.cylinder covers
B.lubricating space
C.crosshead
D.exhaust manifold
2.單項(xiàng)選擇題Four strokes consist of suction, compression, （） and exhaust stroke.
A.combustion
B.condensation
C.charging
D.evaporation
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Maximum horsepower of a diesel engine is attained （）.
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Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
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What is the function of the thrust bearing?（）
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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
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