1背景介绍随着信息技术和网络应用以几何性和爆炸性的速度急剧发展 ,新技术革命对整个社会生活必将产生跨世纪的深刻而深远的影响。即使无视纳斯达克和网络股的涨跌 ,互联网络、多媒体、远程传输、宽带通讯、电子商务等等这些新生事物 ,也已经在不容置疑地日渐改变着我们的工作 1 Background With the dramatic and rapid development of information technology and network applications at a geometric and explosive pace, the new technological revolution will surely have a profound and far-reaching impact on the whole social life across the century. Even ignoring the ups and downs of NASDAQ and the Internet stocks, new things like the Internet, multimedia, long-distance transmission, broadband communications, e-commerce, etc. have undoubtedly changed our work day by day