进位计数制包括______两个要素。A.基数和权数 B.基数和位数 C.位数和权数 发布时间:2017-06-07 20:28 │ 来源:www.tikuol.com 题型:单项选择题 问题: 进位计数制包括______两个要素。A.基数和权数B.基数和位数C.位数和权数D.进制和基数
题型:单项选择题 Mary _______ the piano well. She is often asked to play at the concert.[ ]A. play B. plays C. playingD. played 查看答案