A.春分點(diǎn) B.秋分點(diǎn) C.夏至點(diǎn) D.冬至點(diǎn)
A.赤緯與赤經(jīng)均等于0° B.赤緯等于23°.5N,赤經(jīng)等于90° C.赤緯等于23°.5S,赤經(jīng)等于270° D.赤緯等于0°N,赤經(jīng)等于180°