来自李国琴的问题
已知全集U={1,2,3,4,5,6,7,8},A={1,4,6},B={4,5,7},则（CuA）∩（CuB）=?A,{2,3,4,8},B,{2,3,8}C,{2,4,8}D{3,4,8}
已知全集U={1,2,3,4,5,6,7,8},A={1,4,6},B={4,5,7},则（CuA）∩（CuB）=?A,{2,3,4,8},B,{2,3,8}C,{2,4,8}D{3,4,8}
4回答
2020-12-15 10:29