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