Right ascension is primarily used by the navigator for（）.<br>A:calculating amplitudes<br>B:calculating great circle sailings by the Agiton method<br>C:entering the Air Navigation Tables (Selected Stars) Pub 249<br>D:plotting on star finders

Right ascension is primarily used by the navigator for（）.
A:calculating amplitudes
B:calculating great circle sailings by the Agiton method
C:entering the Air Navigation Tables (Selected Stars) Pub 249
D:plotting on star finders

出自：海船船员证

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