輪機(jī)英語章節(jié)練習(xí)(2020.05.11)

來源：考試資料網(wǎng)

1 The resistance of a conductor varies （）

2 If the ordered spare parts have been modified by manufacturer, which of the following should be pay attention to?（）

3 The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.

4 The bore of each cylinder is formed in a liner which can be （） when worn out.

5 Oil is supplied to the crosshead using a swinging arm or a （） and is sometimes boosted in pressure to and efficient lubrication.

6 Engine fuel pump index is （）.

7 When the dock is refilled with water after docking repair, the first work which should be done by engineers is （）

8 Which of the following statements concerning butterfly valves is correct?（）

9 In motorships，there are two main circuits, （）.

10 Because the expansion valve is just （） way open, the refrigerant is under low pressure in the evaporator.