A0123B124的精选

若A={0,1,2,3},B={1,2,4},则A∪B=A.{0,1,2,3,4}B.{1,2,3,4...

2022-04-21

问题详情：若*A={0,1,2,3},B={1,2,4},则*A∪B=A.{0,1,2,3,4}B.{1,2,3,4} C.{1,2} D.{0}【回答】A知识点：*与函数的概念题型：选择题...