航海英語(yǔ)船舶修理業(yè)務(wù)單項(xiàng)選擇題每日一練(2019.01.17)

來(lái)源：考試資料網(wǎng)

1 Chain suspension ladders on a ship must be replaced by fixed ladders if the required chain suspension ladder（）.

2 Small hull leaks can be temporarily repaired by（）.

3 Any person maintaining a listening watch on a bridge-to-bridge radiotelephone must be able to（）.

4 Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using（）.

5 After riveting is completed，the joints on the shell of a vessel are generally made watertight by（）.