● Project schedule management is made up of six management processes including: activity definition, activity sequencing, ( 71) , and schedule control by order．

A、（71）

B、A．activity duration estimating, schedule developing, activity resource estimating

C、B ． activity resource estimating, activity duration estimating, schedule development

D、C．schedule developing, activity resource estimating, activity duration estimating

E、D．activity resource estimating, schedule developing, activity duration estimating