輪機(jī)英語(yǔ)船舶輔助機(jī)械章節(jié)練習(xí)(2018.03.13)

來(lái)源：考試資料網(wǎng)

1 If a radial piston hydraulic pump fails to deliver rated fluid volume, the cause can be （）.

2 The emergency bilge suction or bilge injection valve is used to prevent （） of the ship.

3 The tube in a boiler should be blinded if found （）.

4 After installing a new hydraulic pump in a system, what special attention should be given to the hydraulic system?（）

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5 The boiler is fired （） the demand for steam exceeds that available from exhaust gas heating.

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6 You should frequently compare drum-mounted and remote-reading water level indicators（） between these have contributed to failures because of overheating through shortage of water, when a boiler was being oil-fired.

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7 What is the function of thermostatic expansion valve in a compression refrigeration system?（）

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8 Moisture should be kept out of an R-12 system because it tends to cause （）.

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9 A centrifuge arranged to separate two liquids is known as （）.

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10 Which of the following types of hydraulic pumps would be used in a steering system?（）

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