×
Log in
Upload File
Most Popular
Study
Business
Design
Technology
Travel
Explore all categories
Report copyright -
· Web view16.可实现图片,视频,音频、PPT、word、pdf等教学资源文件与书写内容在同一页面下共存,并且用户可多人同时分别用手势操作ppt、word、pdf、图片、视频、音频等资源文件的放大、缩小、旋转、拖拽,方便多人同时互动
Please pass captcha verification before submit form
Select
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Send