下边的漫画《招工》说明了(　　)

A．我国劳动力市场不完善，就业信息渠道不畅通

B．劳动者有取得劳动报酬和接受职业技能培训的权利

C．我国的人口总量和劳动力总量都比较大

D．我国劳动力素质与社会经济发展的需要不完全适应

During the project, requirements change for a variety of reasons. As needs change and as work proceeds, additional requirements are derived and changes may have to be made to the existing requirements. It is essential to manage these additions and changes efficiently and effectively. To effectively analyze the impact of the changes, it is necessary that the source of each requirement is known and the rationale for any change is documented. The project manager may, however, want to track appropriate measures of requirements volatility to judge whether new or revised (75) are necessary.

A. proceedings


B. controls
C. forecasting's

D. prelibations