高中数学代数与函数一函数练习题86
题目内容

设集合 http://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image002.gifhttp://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image003.gif,则从 http://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image004.gifhttp://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image005.gif的映射共有( http://picflow.koolearn.com/upload/2010-12/15/e10bc7d6-d063-4f98-ac4e-09e32d1570e9/paper.files/image006.gif    )

2021-08-04

A.2 个

B.4个

C.6个

D.8个

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