航海英語求生用語單項(xiàng)選擇題每日一練(2019.01.17)

來源：考試資料網(wǎng)

1 The object of plugging holes below the waterline on a ship should be to（）.

2 The grab rail of a metal lifeboat is normally located（）.

3 The minimum amount of lifesaving equipment required aboard an 85-foot uninspected towing vessel consists of（）.

4 A flooded lifeboat on board a vessel would adversely affect the vessel’s stability by（）.

5 Seawater may be used for drinking（）.