设全集U={1,2,3,4,5,6,7,8},A={2,4,5},B={1,2,6},则集合{3,7,8}是( ) A.(C ∪
设全集U={1,2,3,4,5,6,7,8},A={2,4,5},B={1,2,6},则集合{3,7,8}是()A.(C∪A)∩(C∪B)B.(C∪A)∪(C∪B)C.A...
设全集U={1,2,3,4,5,6,7,8},A={2,4,5},B={1,2,6},则集合{3,7,8}是( ) A.(C ∪ A)∩(C ∪ B) B.(C ∪ A)∪(C ∪ B) C.A∪B D.A∩B
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