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10. 在坐標空間中,有兩點A(a,a,0)、B(0,-a,-a) ,且a > 0,若 ,試求 a=?(A) (B) (C) 2 (D) 3
問題詳情
10. 在坐標空間中,有兩點A(a,a,0)、B(0,-a,-a) ,且a > 0,若
,試求 a=?
(A)
(B)
(C) 2
(D) 3
參考答案
答案:B
難度:
計算中
-1
書單:
沒有書單,新增
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