How is variation indicated on a small-scale nautical chart?（）<br>A:Magnetic compass table<br>B:Magnetic meridians<br>C:Isogonic lines<br>D:Variation is not indicated on small-scale nautical charts

How is variation indicated on a small-scale nautical chart?（）
A:Magnetic compass table
B:Magnetic meridians
C:Isogonic lines
D:Variation is not indicated on small-scale nautical charts

出自：海船船员证

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