题目
题型:填空题难度:简单来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
①2
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
③若a+b=0,则(a
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
其中正确结论的序号是 (填上你认为正确的所有结论的序号).
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-49254.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-40355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-55891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202158-12969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202158-39814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-55891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202158-47878.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202158-33762.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-55891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202158-48955.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-55891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202159-35275.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202159-28433.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202159-22188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202159-61003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202200-25769.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202200-74269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202200-77730.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202200-73427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202200-94916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202201-16144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202201-99784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202201-99784.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-55891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202157-26462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202158-12969.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202201-80995.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202202-30777.png)
核心考点
举一反三
A.250 m | B.200 m | C.150 m | D.50 m |
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202152-35621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202153-60049.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202150-36877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202150-98055.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202150-32246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202151-81500.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190815/20190815202151-20885.png)
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