A.春分點(diǎn) B.夏至點(diǎn) C.冬至點(diǎn) D.B或C
A.永不升出 B.永不降沒 C.升出時(shí)間大于降沒時(shí)間 D.有出沒
A.永不升出 B.永不降沒 C.升出時(shí)間大于降沒時(shí)間 D.降沒時(shí)間大于升出時(shí)間