set1={1,2,3}set2={2,3,4}set1和set2的并集是?
7 查阅
set1={1,2,3}set2={2,3,4}set1和set2的并集是?
A.{1,2,3}
B.{2,3,4}
C.{1,2,3,4}
D.{2,3}
参考答案:
set1={1,2,3}set2={2,3,4}set1和set2的并集是?
A.{1,2,3}
B.{2,3,4}
C.{1,2,3,4}
D.{2,3}
参考答案: