题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043343-77022.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043343-47300.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043343-58079.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043245-27454.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043246-98942.png)
(1)多少小时后,蓄水池存水量最少?
(2)当蓄水池存水量少于3千吨时,供水就会出现紧张现象,那么当日出现这种情况的时间有多长?
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043230-89741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043230-71525.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043230-41311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043231-42228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043231-86930.png)
(1)令
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043231-72890.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043231-59143.png)
(2)若用每天
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043232-20982.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043232-84634.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043232-84634.png)
(3)省政府规定,每天的综合放射性污染指数不得超过2,试问目前市中心的综合放射性污染指数是否超标?
如下图,互相垂直的两条公路
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043222-76229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043223-34000.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043223-61946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043223-89663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043223-86832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043222-76229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043223-30572.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043223-34000.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-43106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-31351.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-83664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-78533.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043223-89663.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-14711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-50333.jpg)
(Ⅰ)问:
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043225-66733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-14711.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043224-14711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043225-66733.png)
如图所示,某学校的教学楼前有一块矩形空地
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043151-39957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043151-19103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043151-28089.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043152-55674.png)
(1) 试用
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043151-19103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043152-21091.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043151-19103.png)
(2) 如何设计人行道的宽度
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043151-19103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043151-28089.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043152-21316.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043139-91720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043140-66531.png)
现在要将
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043140-88194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043140-73446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043140-76551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043141-26201.png)
(1)试用
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043141-49172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043141-58496.png)
(2)问如何截取矩形
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043140-73446.png)
的残料最少?
![](http://img.shitiku.com.cn/uploads/allimg/20200205/20200205043141-62272.png)
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