航海英語貨物裝卸貨作業(yè)單項選擇題每日一練(2019.01.25)

來源：考試資料網(wǎng)

1 When using slings，cargo handlers should take all the following precautions except（）.

2 The net productivity per gang-hour can be improved through a decrease of（）.

3 The tricing pendants should be released（）.

4 How should you signal the crane operator to hoist（）.

5 The ship is listing too much due to your faulty method in loading operation．You must keep her （）.