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
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In an emergency，the electro-hydraulic steering units can be directly controlled by the（）.
A.trick wheel
B.rapson slide
C.follow-up gear
D.receiver unit -
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In a Williamson turn，the rudder is put over full until the（）.
A.vessel has turned 90°From her original course
B.vessel has turned 60°From her original course
C.vessel is on a reciprocal course
D.emergency turn signal sounds -
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If you see someone fall overboard from a ship，you should（）.
A.immediately jump in the water to help the individual
B.call for help and keep the individual in sight
C.run to the radio room to send an emergency message
D.go to the control room for the distress flares
