单项选择题
On some projects, especially ones of smaller scope, activity sequencing, activity resource estimating, activity duration estimating, and （） are so tightly linked that they are viewed as a single process that can be performed by a person over a relatively short period of time.
A.time estimating B.cost estimating C.project planning D.schedule development
单项选择题 Project （） Management includes the processes required to ensure that the project includes all the work required, and only the work required, to complete the project successfully.
