航海英語(yǔ)消防演習(xí)與作業(yè)單項(xiàng)選擇題每日一練(2019.01.09)

來(lái)源：考試資料網(wǎng)

1 Fire hose couplings（）.

2 Halon fire extinguishers are NOT effective when used on which types of fires?（）

3 Fire and abandon ship stations and duties may be found on the（）.

4 Halon from extinguishers used on a class B fire，should be directed（）.

5 CO₂ cylinders，which protect the small space in which they are stored must（）.