航海英語船舶索具及保養(yǎng)單項選擇題每日一練(2019.01.07)

來源：考試資料網(wǎng)

1 When riveted joints occur at the ends of plating they are called（）.

2 Which tensioning device is used with chain to secure heavy vehicles aboard Ro-Ro vessels（）.

3 he heel block is located（）.

4 Under identical load conditions，nylon，when compared with natural fiber line，will stretch（）.

5 A stage should only be rigged（）.