輪機(jī)英語船舶輔助機(jī)械章節(jié)練習(xí)(2018.01.13)

來源：考試資料網(wǎng)

1 When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.

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2 The type of gauge most commonly used to measure pressure is the （）.

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3 The internal part of boiler should be cleaned by yard if found （）.

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4 As for a oil-fired boiler too much air would indicated by （）.

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5 Which of the problems listed represents the major difficulty encountered with thermal expansion valve operation?（）

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6 A refrigeration unit will tend to short cycle when operating （）.

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7 Increasing the speed of a centrifugal pump will result in an increase in its capacity Another means of increasing the capacity of a centrifugal pump is to increase the （）.

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8 The usual symptoms of cavitation in a centrifugal pump is （）.

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9 Which of the following statements is correct concerning the “flash point ” of a liquid?（）

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10 Which of the following statements is correct regarding an oil with a high viscosity index?（）

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