题目
若非零向量a,b满足/a+b/=/b/,则
A /2a/>/2a+b/
B /2a//a+2b/
D /2b/
A /2a/>/2a+b/
B /2a//a+2b/
D /2b/
提问时间:2021-01-17
答案
举一反三
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