单项选择题
A twin-screw ship going ahead on the starboard screw only tends to move（）.
A.in a straight line
B.to port
C.from side to side
D.to starboard
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A twin screw vessel，making headway with both engines turning ahead，will turn more readily to starboard if you（）.
A.reverse port engine，apply right rudder
B.reverse port engine，rudder amidships
C.reverse starboard engine，apply right rudder
D.reverse starboard engine，rudder amidships -
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A.Length of the towline
B.Height of the towline connection
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A.comes directly over the bow
B.comes directly over the stern
C.comes over an area extending from broad on the bow to the quarter
D.has no effect on the vessel
