你可能感興趣的試題

單項選擇題

A Mercator chart is a （）.

A.cylindrical projection
B.simple conic projection
C.polyconic projection
D.rectangular projection

單項選擇題

A revised print of a chart is made （）.

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

（）chart 3994，positions read from this chart should be shifted 0.03 minutes Northward．

你可能感興趣的試題

A Mercator chart is a （）.

A revised print of a chart is made （）.

（）chart 3994，positions read from this chart should be shifted 0.03 minutes Northward．