下列各式:①
;②
;③
;④
,其中是分式的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d128796cd2ff664fc3866c5713045c27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c592bb12fa5d3bd34eba75d2a59c88f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee7b84884a24c4edaab4deb2d30b7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ff5e2029293a123d0989698addc3f8f.png)
A.①② | B.③④ | C.①③ | D.①②③④ |
更新时间:2020-08-16 06:17:09
|
A.①② | B.③④ | C.①③ | D.①②③④ |