钢筋的应力松弛,在预应力混凝土结构中,将导致钢筋和混凝土预应力增加。( )
参考答案:错
_______that she didn’t do a good job, I don’t think I am abler than her.
A.To have said
B.Having said
C.To say
D.Said
华为IAD支持VOIP协议类型()
A.MGCP H.323
B.H.248 MGCP
C.SIP MGCP
D.H.323 H.248