单项选择题
A.多态
B.封装
C.抽象
D.接口
单项选择题 空白(1)处应选择()
单项选择题 The Development of Project Management Plan Process includes the actions necessary to define, prepare, integrate, and coordinate all constituent plans into a()
单项选择题 Schedule development can require the review and revision of duration estimates and resource estimates to create an approved ()that can serve as a baseline to track progress.