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http://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image001.png,运算“ http://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image002.png”、“ http://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image003.png”定义为: http://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image004.pnghttp://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image005.png,则下列各式中恒成立的是(   ) ① http://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image006.pnghttp://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image007.pnghttp://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image008.pnghttp://picflow.koolearn.com/upload/2013-01/30/bee040ab-51c2-4b8c-850f-7615d34f693a/paper.files/image009.png

发布时间:2021-08-03

A.①②③④

B.①②③

C.①③

D.②④

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