A.fish trap areas
B.naval exercise areas
C.underwater cables
D.recommended track lines
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A.A regulated anchorage
B.Fish trap areas
C.An area closed to the public
D.Underwater cables
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
最新試題
The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
The arrangement of charts in the catalogue is（）.
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
Every chart is liable to be incomplete（）.
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
What information is found in the chart title? （）
Which aid is NOT marked on a chart with a magenta circle? （）
What defines a great circle? （）
The only cylindrical chart projection widely used for navigation is the （）.