輪機(jī)英語(yǔ)船舶輔助機(jī)械章節(jié)練習(xí)(2017.12.28)

來(lái)源：考試資料網(wǎng)

1 Ammonia when used as a refrigerant is valuable because of its high efficiency, it is however （）.

2 The ability of an oil to separate cleanly from an oil and water mixture is referred to as its （）.

3 In a general cargo crane, （） is fitted to lift the cargo load.

4 A salinity indicator is used to determine the （）.

5 One distinct advantage of flash type evaporators, as compared to most other evaporators, is that in a flash evaporator （）.

6 In the refrigeration system, a shortage of refrigerant is indicated by （）.

7 Clean oil is achieved in a clarifier bowl where the impurities and water collect at the bowl （）.

8 Too much air in the furnace of an oil-fired boiler would be indicated by （）.

9 Broken valve strips in an operating low pressure, air compressor will cause （）.

10 Coalescence is the breakdown of surface tension between oil droplets in an oil/water mixture, which causes them to join and （） in size.