题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115836-64787.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115836-95563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115836-61789.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115836-48925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115836-31678.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-82780.png)
(1)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-55979.png)
(2)污染物减少
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-36545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-92353.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-55979.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-42458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-36545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-59977.png)
解析
试题分析:本题的关键是看懂题目:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-61677.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-26332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-28332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115839-32047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115839-89687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115839-44447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115840-20766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-55040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-28850.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-53765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-91302.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-58324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-72116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-46769.png)
试题解析:(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115836-48925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-28332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115839-32047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115839-89687.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115839-44447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115840-20766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-55040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-28850.png)
所以,当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-53765.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-91302.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-55979.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-42458.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-58324.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115841-72116.png)
解得
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115842-28983.png)
∴污染物减少
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115837-36545.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115838-59977.png)
核心考点
试题【某工厂产生的废气经过过滤后排放,过滤过程中废气的污染物数量与时间小时间的关系为.如果在前个小时消除了的污染物,试求:(1)个小时后还剩百分之几的污染物?(2)污】;主要考察你对函数的相关概念等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115801-28701.png)
(1)若对于区间
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115801-90722.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115801-27360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115802-72621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115802-47482.png)
(2)若函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115802-13464.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115802-61745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115803-91451.png)
①实数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115802-47482.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115803-28649.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115736-37063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115737-65794.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115737-99555.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115728-99040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115705-13821.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115706-32729.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115706-92360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115706-87816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115707-22934.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115644-11414.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115645-50420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115645-48606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115645-50420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115645-16094.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115645-50420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115646-90523.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204115646-41860.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() |
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