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【单选题】
设集合U={1，2，3，4，5，6}，M={1，2，4}，则C U M= [ ]A.
U
B.
{1，3，5}
C.
{3，5，6}
D.
{2，4，6}
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A.
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B.
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C.
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D.
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A.
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B.
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C.
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D.
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E.
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A.
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B.
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C.
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D.
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