單項選擇題

A vessel shall not（）.

A.enter the traffic separation zone in an emergency
B.cross a traffic lane
C.engage in fishing in the separation zone
D.proceed in an inappropriate traffic lane

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單項選擇題

A sailing vessel shall not impede the safe passage of a（）．

A.power-driven vessel following a traffic lane
B.pilot vessel enroute to a pilot station
C.law enforcement vessel
D.All of the above

單項選擇題

（）is not a type of IALA maritime buoyage system.

A.special marks
B.isolated danger marks
C.cardinal marks
D.fore and aft marks