单项选择题

A 20-meter power-driven vessel pushing ahead or towing alongside will display（）.

A.a single white light forward
B.two masthead lights in a vertical line
C.two towing lights in a vertical line
D.two all-round red lights where they can best be seen

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单项选择题

A traffic separation zone is that part of a traffic separation scheme which（）.

A.is between the scheme and the nearest land
B.contains all the traffic moving in one direction
C.is designated as an anchorage area
D.separates traffic proceeding in one direction from traffic proceeding in the opposite direction

单项选择题

A vessel using a traffic separation scheme shall（）.

A.only anchor in the separation zone
B.cross a traffic lane at as small an angle as possible
C.avoid anchoring in areas near the termination of the scheme
D.utilize the separation zone for navigating through the scheme if she is impeding other traffic due to her slower speed

单项选择题

In a traffic separation scheme，when joining a traffic lane from the side，a vessel shall do so（）.

A.only in case of an emergency or to engage in fishing within the zone
B.as nearly as practical at right angles to the general direction of traffic flow
C.at as small an angle as possible
D.only to anchor within the zone