单项选择题

A vessel is considered to be restricted in her ability to maneuver under the Rules if she is （）.

A.at anchor
B.mine-clearing
C.engaged in fishing
D.engaged in towing

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单项选择题

A vessel fitted with twin screws is easier in（）than a vessel with single screw.

A.turning maneuver
B.course setting
C.position fixing
D.regulating speed

单项选择题

A twin-screw vessel is easier to maneuver than a single-screw vessel because the twin-screw vessel（）.

A.permits the rudder to move faster
B.generates more power
C.can turn without using her rudder
D.can suck the water away from the rudder

单项选择题

A twin-screw vessel can clear the inboard propeller and maneuver off a pier best by holding a(n)（）.

A.forward spring line and going slow ahead on the inboard engine
B.after spring line and going slow astern on the outboard engine
C.forward spring line and going slow ahead on both engines
D.forward spring line and going slow ahead on the outboard engine