已知U={1,2,3,4,5,6,7,8},A={1,3,5,7},B={2,4,5}则? U (A∪B)( ) A.{6,8} B
已知U={1,2,3,4,5,6,7,8},A={1,3,5,7},B={2,4,5}则?U(A∪B)()A.{6,8}B.{5,7}C.{4,6,7}D.{1,3,5,...
已知U={1,2,3,4,5,6,7,8},A={1,3,5,7},B={2,4,5}则? U (A∪B)( ) A.{6,8} B.{5,7} C.{4,6,7} D.{1,3,5,6,8}
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