单项选择题
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
A.Spliced into the ring on the stem post B.Secured to the inboard side of a forward thwart and led inboard of the falls C.Secured by a toggle to the stem post and led outboard of the falls D.Secured by a toggle around the outboard side of a forward thwart