单项选择题

The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．

A.fish trap areas
B.naval exercise areas
C.underwater cables
D.recommended track lines

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单项选择题

A.A regulated anchorage
B.Fish trap areas
C.An area closed to the public
D.Underwater cables

单项选择题

A.High water line
B.Low water line
C.Low water spring line
D.Tide level

单项选择题

A.Amphibious training areas
B.Grounds for dredge spoil
C.Fish trap areas
D.Gunnery exercise areas