航海英語各種英文申請(qǐng)書單項(xiàng)選擇題每日一練(2019.01.24)

來源：考試資料網(wǎng)

1 A hand held instrument used to measure distances between objects and the ship is a（）.

2 Permanent magnetism is found in（）.

3 Cargo transfer operations on a tank vessel need NOT be stopped when（）.

4 An inert gas system installed on a tanker is designed to（）.

5 A jack-up drilling rig being towed must（）.