P1234的知识精选

已知全集U={1,2,3,4,5,6},*P={1,2,3,4},Q={3,4,5,6},则PA.{1,2}...
问题详情:已知全集U={1,2,3,4,5,6},*P={1,2,3,4},Q={3,4,5,6},则PA.{1,2}       B.{3,4}       C.        D.1【回答】A知识点:常用逻辑用语题型:选择题...
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