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單項選擇題The lubrication to the cylinders affected by the fire must be （）to prevent seizure and all scavenge drains must be （）to prevent the discharge of sparks and burning oil from the drains into the engine room.

A.decreased；opened
B.decreased；shut
C.increased；opened
D.increased；shut

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1.單項選擇題If a scavenge fire starts, the engine must be put to “（）” and the fuel must be taken off the cylinders affected by the fire.

A.stop engine
B.finished with engine
C.dead slow ahead
D.dead slow astern

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2.單項選擇題In ships where the engine room is designed as UMS, temperature sensors are fitted at critical points within the scavenge spacesActivation would cause automatic （）of the engine.

A.stop
B.start
C.speed up
D.slow down

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3.單項選擇題Indications of （）are loss in power and irregular running of the engine, high exhaust temperatures of corresponding unite, high local temperature in scavenge trunk, surging of turbocharger, and sparks and smoke emitted from scavenge drains.

A.a crankcase explosion
B.a scavenge fire
C.abnormal compression ratio

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4.單項選擇題For a fire to begin there must be present a combustible material, oxygen or air to （）combustion, and a source of heat at a temperature high enough to start combustion.

A.begin
B.support
C.last
D.extinguish

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5.單項選擇題Start the turning gear, and with some one hand-operating the cylinder lubricators at regular intervals, and with the indicator cocks （）, and with the control gear in the （）position, give the engine at least one complete turn.

A.open；“stop”
B.closed；“stop”
C.open；“start”
D.closed；“start”

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