3am-5b3与-8a2b2n-1是同类项,则m-n =[ ]
A、3
B、4
C、5
D、6
答案:C
重要的关键性大型设备的检查验收,应由( )组织鉴定小组进行检验。
A.建设单位
B.监理单位
C.设计单位
D.制造单位
— It's a good idea. But who's going to _______ the plan?
— I think Tom and Greg will. [ ]
A. set aside
B. carry out
C. take in
D. get through