A vessel using a traffic separation scheme shall normally join or leave a traffic lane at the （）of the lane.

单项选择题A vessel using a traffic separation scheme shall so far as practicable（）a traffic separation line or separation zone.

A.keep well clear
B.keep very far
C.keep clear of
D.keep clear from

单项选择题A vessel when joining or leaving from the side of a traffic separation scheme shall do so at as（）to the general direction of traffic flow as practicable.

A.small an angle
B.large an angle
C.either small or large an angle
D.neither small nor large an angle

单项选择题If obliged to cross traffic lanes，a vessel shall do so on a heading as nearly as practicable （）to the general direction of traffic flow.

A.at small angle
B.at large angle
C.at right angle
D.in same direction as

单项选择题The rule regarding look-outs applies（）.

A.in restricted visibility
B.between dusk and dawn
C.in heavy traffic
D.All of the above

单项选择题The VTS has been designed to aid in（）.

A.the prevention of collision
B.the promotion of the traffic flow
C.the complying of port regulation
D.the development of navigational technique