15. 極球心切面海圖,圖上各點與極點之距離y和緯度L成何關係?
(A)y = sin L
(B)y = cos L
(C)y = tan L
(D)y = cot L
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統計: A(0), B(2), C(2), D(11), E(0) #3982649
統計: A(0), B(2), C(2), D(11), E(0) #3982649