航海英語應(yīng)急部署單項選擇題每日一練(2019.01.23)

來源：考試資料網(wǎng)

1 What does blowing tubes accomplish?（）

2 What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）

3 The primary function(s) of an automatic sprinkler system is(are) to（）.

4 The spread of fire is NOT prevented by（）.

5 What is an advantage of using foam in fire fighting?（）