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單項選擇題

The short-long dashed magenta line around Gardiners Island marks（）.

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

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單項選擇題

The shoreline on charts generally represents the mean（）.

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

單項選擇題

The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.

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