问题
单项选择题
The most crucial time for project risk assessment is______.
A. when a problem surfaces
B. during the planning phase
C. during the close-out phase
D. after the project schedule has been published
答案
参考答案：B
解析： 进行项目风险评估最关键的时候是：规划阶段(during the planning phase)。
选项A：问题出现时。选项C：结束阶段。选项D：项目进度公布之后。