题文
圆O中,弦PQ满足|PQ|=2,则
=
A.2
B.1
C.

D.4 题型:未知 难度:其他题型
答案
A解析
该题暂无解析
考点
据考高分专家说,试题“圆O中,弦P.....”主要考查你对 [向量数量积的运算 ]考点的理解。
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