Your IP address 58.39.140.173 is already downloading a file.You have to wait until it is finished
题目
Your IP address 58.39.140.173 is already downloading a file.You have to wait until it is finished
答案
由于你的IP地址（ 58.39.140.173 ）正在下载文件,你必须等到下载完成（才能进行相关操作）.
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已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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