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已知U={1,2,3,4,5,6,7,8},A={1,3,5,7},B={2,4,5},则Cu(AUB)等于?
A{6,8} B{5,7} C{4,6,7} D{1,3,5,6,8}
人气:266 ℃ 时间:2020-01-30 07:13:22
解答
{6,8}
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