"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"
正确答案是C
"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"
正确答案是C