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

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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

單項選擇題

The arrangement of charts in the catalogue is（）.

A.on a regional basis
B.on a national basis
C.shown orderly
D.appeared from A to W