輪機(jī)英語(yǔ)船舶輔助機(jī)械章節(jié)練習(xí)(2018.02.26)

來(lái)源：考試資料網(wǎng)

1 After fitting back in place the gear wheels, don’t forget to （） them.

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

3 The term "pour point" is defined as the lowest temperature at which lubricating oils will flow （）.

4 If a centrifugal pump vibrates and is noisy when operating, the cause could be （）.

5 Which characteristic or condition will have the greatest effect on increasing a hydraulic oils viscosity?（）

6 The safety valve should be （） in the presence of C/E and Surveyor.

7 Proper combustion in a boiler would be indicated by （）.

8 On all vessels equipped with refrigeration units of over 20 cubic foot capacity, （）.

9 Between the steam dram and the smaller water dram below, large numbers of smaller diameter （） tubes are fitted.

10 In general, （） is suitable for delivering small quantifies at high pressure.