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问题详情

电子邮件地址的格式是( )。

A、用户名@主机域名

B、主机域名@用户名

C、用户名.主机域名

D、主机域名.用户名

时间：2021-09-01 16:20 关键词：安徽教育在线安徽理工大学测绘工程

答案解析

A

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