A.cylindrical projection
B.simple conic projection
C.polyconic projection
D.rectangular projection
您可能感興趣的試卷
你可能感興趣的試題
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
A.vertical distance from the chart sounding datum to the ocean bottom，plus the height of tide
B.vertical distance from the chart sounding datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
A.Gray lines on the uppermost inset chart
B.Red lines on the main body of the chart
C.In parenthesis on the lines of equal magnetic variation
D.Annual rate of change is not shown
最新試題
Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.
The soundings on the chart are based on the depth of water available at （）.
Particular care is needed when navigating in the vicinity of（）as very few of these features have been fully surveyed to modern standards to determine their correct position，full extent，or the least depth over them.
What defines a great circle? （）
What is NOT an advantage of the rhumb line track over a great circle track? （）
The survey information upon which a chart is based is found （）.
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 is found in the chart title（）.
A chart projection depicting the poles and a small area on either side of a connecting meridian，that is sometimes used for star charts，is the（）.
The short-long dashed magenta line around Gardiners Island marks（）.