A.A regulated anchorage
B.Fish trap areas
C.An area closed to the public
D.Underwater cables
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A.High water line
B.Low water line
C.Low water spring line
D.Tide level
A.Amphibious training areas
B.Grounds for dredge spoil
C.Fish trap areas
D.Gunnery exercise areas
A.on a regional basis
B.on a national basis
C.shown orderly
D.appeared from A to W
A.very rare
B.common
C.often
D.reasonable
A.SW of Cocos Islands
B.oceanic dangers or seamounts
C.undiscovered dangers
D.the continental shelf
最新試題
The maximum difference between mean time and apparent time is （）.
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
The arrangement of charts in the catalogue is（）.
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
The revision date of a chart is printed on which area of the chart? （）
The only cylindrical chart projection widely used for navigation is the （）.
The numeral in the center of a wind rose circle on a pilot chart indicates the （）.
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
Which information is found in the chart title（）.
Which chart symbol indicates the bottom is clay（）.