2. 计算机
  3. A requirement is simply a statement of what the system must do or what characteristics it needs to have．Requirements written fro

A requirement is simply a statement of what the system must do or what characteristics it needs to have．Requirements written fro

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问题     A requirement is simply a statement of what the system must do or what characteristics it needs to have．Requirements written from the perspective of user and focus on user needs are called (71)．Requirements written from the developer’S perspective and describe how the system will be implemented are called (72)．Requirements evolve from detailed statements of the business capabilities that a system should have to detailed statements of the technical way in which the capabilities will be implemented in the new system．Requirements can be either functional or nonfunctional in nature．For example，during the analysis phase of travel vehicles sales system，the system that must have the ability to search for available inventory is (73)．The requirement that the system should be able to work on any Web browser belongs to (74)．That customer personal information is protected in compliance with the Data Protection Act is a requirement of (75)．
(75)
选项 A、system constraint      
B、system performance
C、security and control
D、cultural and political
答案D
解析 参考译文
简单说需求就是关于系统必须做什么或需要有哪些特点的陈述。从用户角度所撰写的需求主要关注用户的需要，称为业务需求。从开发者角度所撰写的需求主要描述系统如何被实现，称为系统需求。需求从一个系统应有业务功能的详细陈述演变到新系统中实现这些功能中所采用技术途径的详细陈述。需求本身可以是功能性或非功能性的。例如，在旅行车销售系统的分析阶段，系统必须能够搜索现有的库存是一种功能性需求。系统应该能够适应任何Web浏览器的需求属于操作需求。客户个人信息应依照Data，Protection  Act予以保护则是文
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