若x,y为实数,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3300aca58a86df45ba5c62f1edc663b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156bea4e1fda13b3a49c27ba68e2ad41.png)
A.0 | B.1 | C.-1 | D.-2020 |
更新时间:2020-04-02 09:37:25
|
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单选题
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适中
(0.65)
【推荐1】已知
的三边长分别为
,且满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba1e7a657ed134e68efd159b606620f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2f391f41e30baeaa82ba09c7c440d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.不是直角 | B.是以![]() |
C.是以![]() | D.是以![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】若
,
为实数,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab731404ffc3b25759d2dc934437c59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa1578079a1047cd9d09348f4bc42f7.png)
A.2 | B.-2 | C.1 | D.-1 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】下列各组数中,数值相等的是( )
A.-35与(-5)3 | B.-35与(-3)5 | C.-34与(-5)4 | D.(-3×5)3与-3×53 |
您最近一年使用:0次