航海英語救生設備單項選擇題每日一練(2019.01.05)

來源：考試資料網(wǎng)

1 Oily rags stored in a pile that is open to the atmosphere are a hazard because they may（）.

2 How many life buoys（）on board with self-igniting light?

3 In launching a covered lifeboat，what would safely lower the lifeboat from inside the lifeboat cabin?（）

4 On a ship，how many ring buoys are required to have a buoyant line attached?（）

5 On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）