【简答题】请下面一段材料,回答第1-3题. 1.What is wrong with the man? A.He has a slight cough. B.He has been feeling unwell for some time C.His blood pressure is 99. 2.How many cigarettes does the man smoke a day? A.less th...
【单选题】有一无吊车工业厂房,采用刚性屋盖,其铰接排架结构计算简图如下图所示。结构安全等级为二级;在垂直排架方向设有柱间支撑。混凝土强度等级为C20,纵向钢筋采用HRB335级钢,箍筋为HPB235级钢。柱子截面尺寸400mm×500mm,计算时假定a s =a s ′=40mm。柱顶竖向静荷载标准值P=400kN,并假定屋面活荷载为零。风荷载标准值q 1 =4kN/m,q 2 =3kN/m。 提示:①柱顶...