题文
如图,在△ABC中,AD⊥AB,
,

,则

( )A、2

B、

C、

D、

题型:未知 难度:其他题型
答案
D解析
该题暂无解析
考点
据考高分专家说,试题“如图,在△A.....”主要考查你对 [向量数量积的运算 ]考点的理解。
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