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航海英語(yǔ)消防演習(xí)與作業(yè)單項(xiàng)選擇題每日一練(2019.01.21)

來(lái)源：考試資料網(wǎng)

1 Fire extinguishers of sizes III，IV，and V are designated as（）.

2 A fifteen-pound CO₂ extinguisher（）.

3 Fire may be spread by which means?（）.

4 Flame screens are used to（）.

5 Generally，the first action in extinguishing an LFG fire caused by escaping gas is to（）.