XX 电子报税系统项目建议书 目 录1. 引言........................................................................................................31.1背景说明.....................................................................................................31.2项目要求.....................................................................................................31.3参考资料.....................................................................................................31.4词语及缩写.................................................................................................31.5系统提出.....................................................................................................42. 软件总体概述.......................................................................................42.1目标..............................................................................................................42.2系统模型.....................................................................................................62.3网络拓扑结构............................................................................................62.4系统功能.....................................................................................................62.4.1............................................................................................报税受理部分.............................................................................................................................72.4.2.....................................................................................................ISP 部分.............................................................................................................................72.4.3..........................................................................用户部分（纳税终端）.............................................................................................................................82.5性能需求......................
