單項(xiàng)選擇題

Diurnal aberration is due to（）.

A.motion of the Earth in its orbit
B.rotation of the Earth on its axis
C.the body's orbital motion during the time required for its light to reach the Earth
D.a false horizon

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單項(xiàng)選擇題

Capella is found in what constellation? （）

A.Gemini
B.Auriga
C.Libra
D.Crab

單項(xiàng)選擇題

Because the actual center of some planets may differ from the observed center，the navigator applies a correction known as the（）.

A.phase correction
B.refraction correction
C.semidiameter correction
D.augmentation correction

Diurnal aberration is due to（）.

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Capella is found in what constellation? （）

Because the actual center of some planets may differ from the observed center，the navigator applies a correction known as the（）.

Because the actual center of some planets may differ from the observed center，the navigator applies a correction known as the（）.