单项选择题
In each inflatable liferaft，what equipment is provided to make quick，emergency，temporary repairs to large holes in the raft? （）
A.No equipment is provided B.Glue and rubber patches C.Several various-sized sealing clamps D.Self-adhesive rubberized canvas patches
单项选择题 In an emergency，the electro-hydraulic steering units can be directly controlled by the（）.
单项选择题 In a Williamson turn，the rudder is put over full until the（）.
单项选择题 If you see someone fall overboard from a ship，you should（）.
