以下关于工程项目划分,()是计算人工、材料、机械消耗的最基本的计算要素
A.单项工程
B.单位工程
C.分部工程
D.分项工程
参考答案:D
His uncle ______ for more than 9 years.[ ]
A. has come here
B. has started to work
C. has lived there
D. has left the university
下面哪一项不属于DBS3900基站的监控系统()。
A、EMUA
B、PMU(APM30)
C、IBBS
D、DCDU-03