题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173235-45183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173235-38544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173235-13010.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173235-24186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173236-33362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173236-13846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173236-33186.png)
(1)设室内,室外温度均分别为
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173236-63868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173237-95363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173237-84763.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173237-38705.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173237-30074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173236-63868.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173237-95363.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173235-45183.png)
(2)为使双层中空玻璃单位时间内,在单位面积上通过的热量只有单层玻璃的4%,应如何设计
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173235-45183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173237-95084.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-20061.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-12864.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-71572.png)
解析
试题分析:(1)根据题设含义以及图进行分析求解;(2)借助第一问的结论,根据条件得到等式
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-66325.png)
试题解析:(1)设单层玻璃和双层中空玻璃单位时间内,在单位面积上通过的热量分别为
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-47099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173239-18734.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173239-16013.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173239-11898.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173239-75767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173240-92230.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173240-84798.png)
(2)由(1)知
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173240-14732.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-66325.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-71572.png)
答:当
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173238-71572.png)
核心考点
试题【某单位设计的两种密封玻璃窗如图所示:图1是单层玻璃,厚度为8 mm;图2是双层中空玻璃,厚度均为4 mm,中间留有厚度为的空气隔层.根据热传导知识,对于厚度为的】;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/20200204/20200204173215-14298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173215-38876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173215-14084.png)
(1)方程
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173215-47196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173216-23084.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173216-23084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173216-38795.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173216-24042.png)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173216-24042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173216-80136.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173158-55830.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173158-26919.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173158-11344.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173159-62980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173159-96713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173159-18507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173159-12742.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173200-17889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173200-72321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173148-30815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173149-65040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173122-70388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173123-22304.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173123-69558.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173123-65587.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173123-49130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173124-99269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173124-57249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173124-32815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173124-54236.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173125-66409.png)
(Ⅰ)若对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173125-90740.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173125-44269.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173125-45549.png)
(Ⅱ)对于函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173123-49130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173124-57249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173125-51953.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173126-24149.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173126-84307.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173123-49130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173124-57249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173107-33891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173107-34898.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173108-38839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173108-98007.png)
(2)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173108-38839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20200204/20200204173108-47963.png)
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