B. B)His friend's address. C. C)His room number and email address. D. D)His friend's name and phone number. 点击查看答案手机看题 多项选择题 以下属于集中趋势分析指标的有( ) A. 均值B. 中位数 C. 方差D. 峰值 点击查看答案手机看题 ...