PLC运行时执行一个循环扫描过程所需的时间称为扫描周期,其典型值为()。
A.40~150ms
B.100~200ms
C.10~40ms
D.20~80ms
参考答案:A
以下所列的信息系统中,不涉及全局的、系统性的管理的是( )。
A.办公自动化系统
B.管理信息系统
C.决策支持系统
D.事务处理系统
() is the process of obtaining the stakeholders' formal acceptance of the completed project scope .verifying the scope includes reviewing deliverables and work results to ensure that all were completed satisfactorily.
A.projectacceptance
B.scopeverification
C.scopedefinition
D.WBS Creation