单项选择题 （）means that every project has a definite beginning and a definite end.

单项选择题 （） is the process of obtaining the stakeholders formal acceptance of the completed project scope .verifying the scope includes reviewing deliverables and work results to ensure that all were completed satisfactorily.

单项选择题 （） are individuals and organizations that are actively involved in the project, or whose interests may be affected as a result of project execution or project completion; they may also exert influence over the project and its results.