A-A+ 3 4 9 12 15 () 21 108。A.20 B.24 C.36 D.18 2021-04-07 13:40:09 招录考试 阅读 问题详情 3,4,9,12,15,(),21,108。A.20B.24C.36D.18 参考答案 查看解答