輪機(jī)英語(yǔ)船舶輔助機(jī)械單項(xiàng)選擇題每日一練(2019.01.21)

來源：考試資料網(wǎng)

1 Which of the following problems could cause the high pressure cutout switch to shut down the compressor in a refrigeration system?（）

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2 If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.

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3 To thoroughly pump out the bilges using a horizontally mounted centrifugal pump, the （）.

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4 Foaming in the steam drum may be caused by （） in a boiler.

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5 Both the temperature and the pressure of the refrigerant are increased in the （）.

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