高中数学代数与函数一函数练习题29
题目内容

若集合 http://picflow.koolearn.com/upload/2013-10/08/351bd13b-8636-47aa-a389-0516d5eff8d4/paper.files/image020.png中只有一个元素,则 http://picflow.koolearn.com/upload/2013-10/08/351bd13b-8636-47aa-a389-0516d5eff8d4/paper.files/image021.png(   )

2021-07-26

A.http://picflow.koolearn.com/upload/2013-10/08/351bd13b-8636-47aa-a389-0516d5eff8d4/paper.files/image022.png

B.http://picflow.koolearn.com/upload/2013-10/08/351bd13b-8636-47aa-a389-0516d5eff8d4/paper.files/image023.png

C.http://picflow.koolearn.com/upload/2013-10/08/351bd13b-8636-47aa-a389-0516d5eff8d4/paper.files/image024.png

D.http://picflow.koolearn.com/upload/2013-10/08/351bd13b-8636-47aa-a389-0516d5eff8d4/paper.files/image025.png

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