航海英語(yǔ)海上救助單項(xiàng)選擇題每日一練(2019.01.23)

來(lái)源：考試資料網(wǎng)

1 An inflatable liferaft can be launched by（）.

2 A floating ship with an initial negative metacentric height（）.

3 Progressive flooding may be indicated by（）.

4 An obstruction on a helideck is any object that might present a hazard to the（）.

5 Severe exposure to chlorine gas can be fatal. Chlorine gas is primarily a（）.