輪機(jī)英語(yǔ)船舶動(dòng)力裝置章節(jié)練習(xí)(2018.01.30)

來(lái)源：考試資料網(wǎng)

1 In a diesel engine, excessive cylinder liner wear will cause （）
(1) increased blow-by
(2) wear between the piston ring and groove

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2 The removal of （） from lubricating oil will reduce engine wear and possible breakdowns.

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3 In a purifier, the interface between the liquid seal and the oil should be positioned as close as possible to （）.

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4 When to remove scale from the cooling spaces, acid solution （） in the system can be tested from time to time by putting some on to a piece of lime.

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5 The external circumference of a pair of main bearing shells is slightly larger than that of the bore of the housing which receives themThe difference is termed （）.

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6 Generally the function of lubrication is to form of a film of lubricant between any two surfaces that have relative （）, so that surfaces dont get touch with each other.

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7 （） is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.

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8 The crank throws are displaced from （） to obtained the same number of degrees between the different crank throws.

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9 （） fuel oils （） lubricating oils require treatment before passing to the engine.

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10 In four strokes engine, the cycle of events is completed in four strokes of （）.

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