• 2021-04-14
    【单选题】设全集U={1,2,3,4,5,6,7,8}, 集合A={1,3,5,7} 则: =_____________
    A. {1,3,5,7} B. {2,4,6,8} C. {1,2,3,4,5,6,7,8} D. 空集