单项选择题
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
单项选择题 The shoreline on charts generally represents the mean（）.
单项选择题 The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
单项选择题 The arrangement of charts in the catalogue is（）.
