航海英語貨物裝卸貨作業(yè)單項(xiàng)選擇題每日一練(2019.01.19)

來源：考試資料網(wǎng)

1 Pedestal cranes have limit switches to restrict movement of which function（s）（）.

2 Bonding cables are used during cargo transfer to（）.

3 For any given pedestal crane，when the boom is lengthened，the lifting capacity is（）.

4 All the holds to be loaded with grain must be swept（）commencement of loading.

5 For a given weight of cargo，the stress on the heel block of a cargo boom（）.