輪機(jī)英語(yǔ)單項(xiàng)選擇題每日一練(2019.09.20)

來源：考試資料網(wǎng)

1 External and internal leakage in hydraulic systems may be caused by （）.

2 The ISM Code is a part of （）

3 Which of the following statements describes the relationship between viscosity and specific gravity?（）

4 Usually the panels are interlocked with （） so that the devices can be made dead before the doors are opened.

5 In a simple mechanical governor, the （）.