CRTSⅠ型轨道板混凝土强度和弹性模量达到设计值的()%方可施加预应力。
A、75
B、80
C、90
D、100
参考答案:B
来料加工装配项下加工成品出口,免予缴纳( )。
A.增值税
B.消费税
C.出口关税
D.以上选项均正确
—Can you tell me___________?
—We are very good friends. [ ]
A. how you get on with Joe
B. who your best friend is
C. what you are going to be
D. what he looks like