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发表于:2021-11-01
问题详情:已知全集U={1,2,3,4,5,6,7},*A={1,3,5,6},则( ) A.{1,3,5,6} B.{2,3,7} C.{2,4,7} D.{2,5,7}【回答】C知识点:*与函数的概念题型:选择题...
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发表于:2020-10-27
问题详情:设U={1,2,3,4,5,6,7,,则 , .【回答】﹛4,5,6,7﹜,﹛1,2,7﹜知识点:*与函数的概念题型:填空题...
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发表于:2021-11-03
问题详情:已知全集U={1,2,3,4,5,6,7},A={3,4,5},B={1,3,6},则A∩(CUB)等于()A.{4,5} B.{2,4,5,7} C.{1,6} D.{3}【回答】A知识点:*与函数的概念题...