On a Mercator chart the scale varies with ___. This is noticeable on a chart covering a relatively large distance in a north-south direction. A. the longitude B. the latitude C. the altitude D. the position

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On a Mercator chart the scale varies with ___. This is noticeable on a chart covering a relatively large distance in a north-south direction.A. the longitude B. the latitude C. the altitude D. the position

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On a Mercator chart, 1 nautical mile is equal to（等于） .A. 1 minute of longitude B. 1 degree of longitudeC. 1 minute of latitude D. 1 degree of latitude

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What defines a great circle?A. A curved line drawn on a Mercator ChartB. A course line that inscribes a loxodromic curveC. The shortest distance between any two points on the earthD. The smallest circle that can be drawn on the face of a sphere

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Why does distance always have to be measured from the nearest scale on a Mercator chart?A. Because it is the most efficient wayB. Because it varies with the change of latitudeC. Because it varies with the change of longitudeD. Because it is the most straight line

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What does the abbreviation CD stand for on a nautical chart?A. chart datum B. chart delivery C. common datum

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