单项选择题 Damage to ship’s fittings caused by stevedore’s negligence often happens．Therefore，the stevedores（）the cost of repairs effected.

单项选择题 Chain suspension ladders on a ship must be replaced by fixed ladders if the required chain suspension ladder（）.

单项选择题 Any person maintaining a listening watch on a bridge-to-bridge radiotelephone must be able to（）.