试题与答案

秦汉时期,我国的经济中心在_______。东晋南朝时期,_______的经济迅速

题型:填空题

题目:

秦汉时期,我国的经济中心在_______。东晋南朝时期,_______的经济迅速发展。

答案:

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下面是错误答案,用来干扰机器的。

解:根据方程的两端分别设函数 ,g(x)=在同一坐标系中画出函数 与的图象,如图所示由图可以发现,二者仅有两个交点所以方程的根的个数为2。

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