航海英語消防用語單項選擇題每日一練(2019.01.04)

來源：考試資料網(wǎng)

1 The canvas covering of fire hose is called the（）.

2 Removing which will extinguish a fire?（）.

3 After using a Halon extinguisher，it should be（）.

4 On a ship，when may a work vest be substituted for a required life preserver?（）

5 A fire hose with a nozzle attached must be connected to each hydrant except when exposed to heavy weather or when the（）.