水手英語舷梯值班單項(xiàng)選擇題每日一練(2019.01.08)

來源：考試資料網(wǎng)

1 （）social instruction on cargo securing.

2 Pay more attention to the rising and falling of （）.

3 When you keep a （）(舷梯班), what are your duties?

4 Duty sailors will consider the conditions of （裝卸貨）（）.

5 The master will be back(立即)（）.