单项选择题
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 -
单项选择题
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
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单项选择题
If an emergency pump control is used as the emergency shutdown on a tank vessel，it must（）.
A.stop the flow of oil at the main deck manifold
B.prevent the oil from leaving the shore facility
C.prevent the oil from siphoning through the pump
D.None of the above
