Why do distances always have to be measured from the nearest scale on a Mercator chart?

题库:船长 类型:最佳选择题 时间:2019-02-14 17:22:46 免费下载:《甲类船长英语考证》Word试卷

Why do distances always have to be measured from the nearest scale on a Mercator chart?
A.Because it is thr most efficient way
B.Because it varies for each latitude
C.Because it varies with the change oflongitude
D.Because it is the most straight line.

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