本文档作为用户需求说明书，编写的目的是为了定义所要开发的在线考试系统（以下简称项目）的开发目标，包括对功能的规定和性能的要求，指出预期的系统用户、系统的运行环境以及对用户操作的约定，为系统设计和开发提供依据，作为系统功能追溯的基础和系统开发量确定的蓝本。

本文档可以作为本项目组开发人员以及本系统使用人员参考之用。-This document as the user requirements specification, writing for the purpose of definition to the development of online examination system (hereinafter referred to as project) development goals, including the functional requirements and performance requirements, that the expected users of the system, the system' s operating environment and the user agreement, for the system design and development provide the basis for traceability system functions as the foundation and blueprint for determining the amount of system development. This document can serve as the developer of the project team and the use of personnel of the system reference.