航海英語船員職務(wù)名稱單項(xiàng)選擇題每日一練(2019.01.10)

來源：考試資料網(wǎng)

1 During jacking operations and transit，empty void spaces in the hull of a jack up ship provide（）.

2 Fire protection regulations for towing vessels require all crew members to know how to perform each of these tasks EXCEPT（）.

3 Each fire hose coupling on a ship must have threads that meet the specifications of the（）.

4 Each hand portable，semi-portable and fixed fire extinguishing unit on a ship must be tested and inspected at least once every（）.

5 A certificated lifeboatman assigned to command the lifeboat should（）.