有下列式子:①2;②2a;③
;④
;⑤
;⑥
;⑦
.其中代数式有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc310df5a6b8fd8e1c8761ccc3bee514.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212c56ad6f34d9f4ae485790fe0029f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96da42826c1216bd581e822a807d39af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df2ca8b4fb36f7d43e12b2b61590fe13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
A.4个 | B.5个 | C.6个 | D.7个 |
更新时间:2022-03-10 13:10:04
|
相似题推荐
单选题
|
容易
(0.94)
名校
【推荐1】在式子5,
,a,
,
,
中,属于代数式的有( )个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1218eda19f74a1ed50ab106265c6621f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/537c64844b32a708d299ff92dc53c747.png)
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
单选题
|
容易
(0.94)
名校
【推荐2】下列代数式的值一定是正数的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次