1. Dịch vụ thư điện tử là gì?
2. Địa chỉ thư điện tử nào sau đây không đúng? Tại sao?
A. khoa123@gmail.com
B. minhtuan.gmail.com
C. nmha@hnmu.edu.vn
D. thuyk39@yahoo.com
Mn giúp mik nha
Cảm ơn mn rất nhiều❤
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Cú pháp địa chỉ thư điện tử tổng quát là:< Tên đăng nhập > @ < Tên máy chủ lưu hộp thư >.
→ Đáp án C
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B
C