Many of the activities performed during the preliminary investigation are still being conducted in(1),but in much greater depth than before. During this phase, the analyst must become fully aware of the (2) and must develop enough knowledge about the (3)and the existing systems to enable an effective solution to be proposed and implemented. Besides the(4)for process and data of current system, the deliverable from this phase also includes the(5)for the proposed system.

空白（3）处填（）

A.hardware environment

B.testingenvironment

C.software environment

D.business environment

下列属于工程项目可行性研究报告的内容的有（）。

A.项目背景、概况

B.场址选择

C.设计方案审查报告

D.投资估算与资金筹措计划

E.项目社会评价和风险分析