Accelerated analysis approaches emphasize the construction of （） to more rapidly identify business and user requirements for a new system. As an accelerated analysis technology,（） reads the program code and automatically generates the equivalent system model, and the code can be obtained from （） . All system analysis approaches require some form of （） which includes those techniques to be used to identify or extract system problems and solution requirements from user community. （） is a classical set of techniques used to collect information about system problems, opportunities, solution requirements, and priorities.

（）is a classical set of techniques used to collect information about system problems

A．Continuous process improvement

B．Joint requirements planning

C．Fact-finding

D．Structured engineering

（）应分析投资项目废污水退至地表水域后，对论证范围内水功能区的水资源使用功能、纳污能力、水质、水温和水生态的影响。

A.入河排污口设置

B.地表取水影响

C.地下取水影响

D.退水影响