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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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1.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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2.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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3.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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4.單項選擇題If the engine can be started and maneuvered on high viscosity fuel, the （）of the fuel reaching the injectors should be raised to such a point that the viscosity is less than the required value, ie27c St.

A.pressure
B.temperature
C.viscosity
D.density

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5.單項選擇題On engines having oil cooled pistons the lubricating oil pre-heater must be put into operation and the rate of heating so （） that the temperature of the piston cooling oil returns are 32℃ to 35℃ over a period of at least two hours.

A.slow
B.quick
C.arranged
D.high

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