The project schedule is more than a document that lays out the activities over time to represent the time dimension of the project, it is a management tool to be used for decision making. As such, the schedule is used by the project management team to（）.

A.measure, delay, record, distribute, analyze, and direct

B.plan, schedule, monitor, control, report, and forecast

C.promote, highlight, monitor, control, forecast, and report

D.emphasize, visualize, analyze, conceptualize, report, and record

目前，比较流行的UNIX系统属于哪一类操作系统

A．网络操作系统

B．分时操作系统

C．批处理操作系统

D．实时操作系统