航海英語(yǔ)船舶強(qiáng)度資料單項(xiàng)選擇題每日一練(2019.01.16)

來(lái)源：考試資料網(wǎng)

1 How does an icebreaker normally free a ship which has become beset while navigating independently?（）

2 A crack in the deck plating of a vessel may be temporarily prevented from increasing in length by（）.

3 Guide tolerances during elevation of the jack-up rig will（）.

4 Handholds or straps on the underside of an inflatable liferaft are provided（）.

5 How is the annual rate of change for magnetic variation shown on a pilot chart?（）