set1={1,2,3}set2={2,3,4}set1和set2的差集是?


set1={1,2,3}set2={2,3,4}set1和set2的差集是?

A.{1}

B.{1,}

C.{1,2,3,4}

D.{1,2,3}

正确答案:A


Tag:Python程序设计基础 时间:2022-07-07 15:43:13