下列作业调度算法中最短的作业平均周转时间是( )。A．先来先服务 B．短作业优先

既能益气，又能养血、生津的药物是 ( )

A．大黄
B．芦荟
C．芒硝
D．牵牛子
E．番泻叶

中国赠给联合国的“世纪宝鼎”质量是1.6t，由中国运抵联合国总部，其质量将______；一杯水全部结成冰后，它的质量______，密度______，体积______；一定质量的气体，体积被压缩后，它的密度______，（选“变大”“变小”“不变”填写）

Although your internet start-up company has few project management policies and procedures in place, it made a healthy profit last year. Experience, however, has taught you that some controls are required, especially for projects that change frequently. You would like to establish a change control system for your company, but must convince a group of money-hungry “20 somethings” to use it. To be effective, the change control system must include ______.

A．procedures that define how project documents may be changed

B．specific change requests expected on the project and plan to respond to each one

C．performance reports that forecast project changes

D．a description of the functional and physical characteristics of an item or system

对于跨省派单，必须在本地网和省内障碍排查完后，确认为（）障碍的情况下才可以派发到对端省公司和骨干处理工位。

A、本端

B、集团骨干网

C、用户端

D、对端省