单项选择题 （）is the budgeted amount for the work actually completed on the schedule activity or WBS component during a given time period.

单项选择题 PDM includes four types of dependencies or precedence relationships: （）. The completion of the successor activity depends upon the initiation of the predecessor activity.

单项选择题 The process of（）schedule activity durations uses information on schedule activity scope of work, required resource types, estimated resource quantities, and resource calendars with resource availabilities.