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
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D.receiver unit

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In a Williamson turn，the rudder is put over full until the（）.

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