The client application is designed under multiple document interface structure to make it both aesthetic and practical . the task of security management may be done at the application level with the aid of safe logon function module . the data query function is very applicable and could be applied in many cases 客户端应用程序的设计采用了多文档结构，力求美观、实用；系统安全登录功能的设计使安全管理工作可以在应用程序的层次上完成；数据的查询操作适用性强，并具有一定的通用性；图形部分实现了供热信息的多种图形显示；打印处理模块描述了两种不同的数据打印处理方式。
