31 已知某恆星赤緯(Dec)為56°17.0'N,下中天高度為26° 17.0',則其上中天高度(Ht)與方位(Zn)大約為何?
(A) Ht:33°43.0'與 Zn180°
(B) Ht:86°17.0'與 Zn180°
(C) Ht:33°43.0'與 Zn000°
(D) Ht:86°17.0'與 Zn000°

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統計: A(2), B(5), C(2), D(2), E(0) #2504279