A.frequent
B.so frequent
C.frequent that
D.so frequent that
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A.To consider
B.To check
C.To examine
D.To agree with
A.cylindrical projection
B.simple conic projection
C.polyconic projection
D.rectangular projection
A.after every major hydrographic survey of the area covered by the chart
B.when there are numerous corrections to be made or the corrections are extensive
C.when a low-stock situation occurs and minor corrections are made
D.every two years to update the magnetic variation information
A.Mercator projection
B.polyconic projection
C.orthographic projection
D.gnomonic projection
A.Summary of Corrections
B.Local Notice to Mariners
C.Daily Memorandum
D.Chart Correction Card
最新試題
The description Racon beside an illustration on a chart would mean a （）.
When a buoy is in position only during a certain period of the year，where may the dates when the buoy is in position be found?（）
Which information does the outer ring of a compass rose on a nautical chart provide（）.
Charts showing the coast of Mexico are produced by the United States（）.
The only cylindrical chart projection widely used for navigation is the （）.
What information is found in the chart title? （）
When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
The maximum difference between mean time and apparent time is （）.