单项选择题
What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）
A.Sea anchor B.Steering oar C.Spare rudder D.Daggerboard
单项选择题 Vessel’s provisions refer to（）of the vessel.
单项选择题 To clean a dirty fiber towing hawser used in ocean towing，you should（）.
单项选择题 The order of importance in addressing damage control on a ship is（）.
