A. {2,4,5,6} B. {4,5,6} C. {1,2,3,4,

最全题库2022-08-02  9

问题 A. {2,4,5,6} B. {4,5,6} C. {1,2,3,4,5,6} D. {2,4}

选项 A. {2,4,5,6}
B. {4,5,6}
C. {1,2,3,4,5,6}
D. {2,4}

答案 D

解析
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