单项选择题
A.remain in the immediate vicinity B.head for the nearest land C.head for the closest sea-lanes D.vote on what to do，so all hands will have a part in the decision
A.abandon the survival craft B.check for cracks in the hull C.shift all personnel to the stern D.check the bilge drain plug
A.complete the stroke，hold your oar out from the boat and level with the water B.dip the blade of your oar into the water and leave it there C.lift your oar to a vertical position D.complete the stroke，raise your oar slightly，swing it forward，and place it in the boat