輪機(jī)英語(yǔ)船舶電氣與船舶安全章節(jié)練習(xí)(2018.03.07)

來(lái)源：考試資料網(wǎng)

1 A substance found in residual fuels which tends to cause exhaust valve corrosion and grooving, is（）

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2 （）is not installed on the emergency switchboard.

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3 Which of the listed fire extinguishers is recommended for use on an electrical switchboard fire?（）

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4 What is head tank in the closed cooling water system used for?（）

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5 The （）, cage rotor induction motor is the first choice marine motor in most modern ships because of its electrical and mechanical simplicity.

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6 Before shutting off the fuel supply to stop a medium or high–speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?（）

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7 Which one of the following is not true according to the passage?（）

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8 A shipboard oil pollution emergency plan is required of （）.

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9 Which of the lists forms of heat transfer, if any, is illustrated by the flow of combustion gases through a boiler?（）

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10 An overcorrecting and unstable engine governor operation is known as（）.

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