Being the project manager in a software project which is currently initiated，you want to assess high level risks．What should you do ？（）

A．Develop a preliminary scope statement and document initially identified risks in this document

B．Identify and analyze risk events using qualitative and quantitative techniques

C．Develop contingency plans and fallback plans in case the original plan proves Wrong

D．Discuss the risks documented in your risk register with the project key stakeholders

对于喷气式飞机，下列正确的是（）

A.考虑最大着陆重量，将使用干跑道可用跑道距离的60%

B.跑道坡度需要被考虑

C.防滑系统对着陆距离无影响

D.着陆距离指从35英尺到全停的距离