挑战习题
1/5单选题
难度:

1.

已知|a+b|+|a﹣b|﹣2b=0,在数轴上给出关于a,b的四种位置关系如图所示,则可能成立的有(  )种


A

1

B

2

C

3

D

4

提示1:
PHA+5qC55o2u57ud5a+55YC855qE5Yeg5L2V5oSP5LmJ55Sx5q+P5Liq5pWw6L205a+5fGErYnwrfGHvuaNifO+5ozJiPTDvvIzov5vooYzliIbmnpDliKTmlq3mmK/lkKbmiJDnq4s8L3A+
正确答案:Qg==
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