某多层现浇钢筋混凝土框架结构,其中间层高H=2.8m,圆形装饰柱直径d=300mm,混凝土强度等级为C30,纵向受力钢筋为HRB335,纵筋的混凝土保护层厚度c=30mm,配置螺旋式间接钢筋,箍筋直径为8mm,箍筋间距s=50mm,箍筋为HPB300钢筋。假定柱的轴向压力设计值N=400kN,弯矩设计值M=80kN·m,偏心距增大系数η=1.11,则纵向受拉钢筋与全部纵向钢筋截面面积的比值α t 与下列()项数值最为接近。
【简答题】There are several reasons why he (Kissinger) no longer appears to be the magician the world press had made him out to be, an illusion which he failed to discourage because, as he would admit himself, ...
【简答题】Unless an electronic record contains a specific date of issuance, the date on which it appears to have been sent by the ______ is deemed to be the date of issuance. The date of receipt will be deemed ...