航海英語船舶強(qiáng)度資料單項(xiàng)選擇題每日一練(2019.01.05)

來源：考試資料網(wǎng)

1 From which type of cloud can a tornado or waterspout develop?（）

2 Frapping lines（）.

3 How can the Coast Guard determine that a crew member is “able to understand any order spoken by the officers”?（）

4 Hanging a barge off means to（）.

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