How long should the author usually spend on presenting the paper?
A、About 2 or 3 minutes.
B、About 15 to 20 minutes.
C、About an hour.
D、About two hours or more.
发布时间:2024-11-12 22:15:40
A、About 2 or 3 minutes.
B、About 15 to 20 minutes.
C、About an hour.
D、About two hours or more.