輪機英語船舶輔助機械章節(jié)練習(2018.02.16)

來源：考試資料網(wǎng)

1 The bilge main is arranged to drain any watertight compartment （） ballast, oil or water tanks and to discharge the contents overboard.

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2 A thermostatic expansion valve is properly controlling evaporator superheatAdjusting this valve to lower the superheat will result in a/an （）.

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3 Refrigerant is circulated through a refrigeration system by the （）.

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4 The crane is usually mounted on a pedestal to offer adequate （） to the operator.

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5 To obtain maximum efficiency, two stage air compressors are usually （）.

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6 In the （） refrigeration compressor one end of the crank shaft extends through the crankcase house for connection, via a coupling or pulley, to an external drive motor.

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7 With reference to an axial piston pump, which one of the following statements is true?（）

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8 The advantage of a centrifugal pump as compared with a reciprocating pump is that （）.

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9 If a heavy sea strikes the rudder, the shock is transmitted through the tiller to （）.

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10 We use （） to distill fresh water from sea water.

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