下列计算:①
;②
;③
.其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c5042dffe2581f072951925dd54052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8e69b607867a973cf49a7808286a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8aa30633fd855501e3da462dc35eade.png)
A.3个 | B.2个 | C.1个 | D.0个 |
更新时间:2023-01-13 21:33:54
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