网校的音频、视频课件均采用目前世界上最先进的网络流媒体技术制作而成，强烈建议您下载、安装最新版的Real和Media Player、Flash播放器后再观看和收听本网站所有课件。
　　We apply the most advanced stream-media technology in producing the online-courseware. We strongly suggest you download and install the latest version of windows media player or real player before you watch and listen any courseware on this website.
　　为了使您能够看到最佳的网络教学效果，同一讲课内容，网校根据不同的网络环境制作了窄带视频效果、宽带视频效果、宽屏视频效果、音频效果等不同效果的课件：
　　To providing you the best effects you can have, we develop several bandwitch coursewares for every program, which arereal-broadband, real-narrowband, real-audio, media-broadband, media-narrowband, media-audio and Flash-audio formatted coursewares.
　　窄带效果：此效果为视频教学，图文并茂，声音清晰、图像稍差、传输稳定，分Media和Real两种技术形式，需要分别下载相应的播放器，适合普通拨号上网学员或网络状况较差的宽带上网学员使用；
　　Narrowband course:video and audio are both presented simultaneously with a stable data transfer, but the video quality is not good so it suits the dial-up user or the user whose network status is currently bad.
　　宽带效果：此效果为视频教学，图像和声音质量较佳、图文并茂、视听同步，对网络带宽要求较高，适合普通一般宽带上网学员使用；
　　Windows Media-broadband course:this option provides user a better video and audio quality, which requires user have a broader bandwidth and suits normal broadband connection.
　　宽屏效果：Real宽屏视频效果讲座图像和声音质量极佳、超高清晰度、大屏幕、视听同步，对网络带宽要求非常高，适合网络状况非常好的宽带学员使用，普通宽带用户如果网络状况不是很好的情况下请不要使用；
　　Real-broadband course:this option provides user the highest quality of video and audio effects which suits the user who has a high-speed broadband Internet connection.
　　音频效果：没有视频图像，声音清晰，传输数据量极小，分为Media\Real\Flash等技术形式，需要分别下载相应的播放器，对网络带宽要求最低，适合所有上网方式的学员使用。
　　Audio course:This option doesn't provide video frames, but the sound is clear. It can be played by either Media player or Real player, but you need to install the correspondent players. It requires less bandwidth compared to other connection options and suits all the Internet users.