航海英語船舶索具及保養(yǎng)單項(xiàng)選擇題每日一練(2019.01.23)

來源：考試資料網(wǎng)

1 What is the best guide for determining the proper scope of anchor chain to use for anchoring in normal conditions?（）

2 When towing，what is the main reason for using a chain bridle on a wire hawser（）.

3 opes or wires attached to derricks to prevent them from swinging during cargo handling operations are（）.

4 A serving mallet is used in（）.

5 Which is normally used to hold wire rope for splicing（）.