航海英語(yǔ)航海英語(yǔ)綜合練習(xí)單項(xiàng)選擇題每日一練(2019.01.20)

來(lái)源：考試資料網(wǎng)

1 How should you signal the crane operator to lower the boom and raise the load?（）.

2 You will find information about the duration of slack water in the（）.

3 Fishing stake, the position of which frequently（）,exist in the area covered by this chart.

4 （）or loss of contents.

5 A wind has caused a difference between drafts starboard and port. This difference is（）.