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單項(xiàng)選擇題

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

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單項(xiàng)選擇題

If（）is shut down for an extended time optimum position fixing will take up to 2 hours after power is reapplied．

A.radar
B.DF
C.Satellite Navigator
D.Automatic Omega Navigator

單項(xiàng)選擇題

If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE?（）.

A.Compass error and variation are equal
B.Compass north will be true north
C.Variation will equal deviation
D.There will be no compass error

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