【简答题】In the 60s, people asked about your astrological (about star) sign. In the 90s, they want to know your website. 1 Your website is an electronic meeting place for your family, friends and potentially, ...
【简答题】根据下列条件,回答 14~20 题: 钢筋混凝土简支矩形截面梁尺寸为250mm X 500mm,混凝土强度等级为C30,梁受拉区配置3φ20的钢筋(942mm2),混凝土保护层c=25mm,承受均布荷载,梁的计算跨度,lo=6m。 第 14 题 若已知按荷载效应的标准组合计算的跨中弯矩值Mk=100kN?m,则裂缝间纵向受拉钢筋应变不均匀系数ψ与下列( )项数值最为接近。
【简答题】People are asked __________.
【简答题】已知一双筋矩形截面梁,截面尺寸 ,混凝土强度等级为C25,HRB400钢筋,环境类别为一类,承受弯矩设计值为280KN.m,如果受压区配置了3根直径20mm的受压钢筋,试求纵向受拉钢筋的截面面积。
【简答题】In the 60s, people asked about your astrological (about star) sign. In the 90s, they want to know your website. 小题1: Your website is an electronic meeting place for your family, friends and potentiall...
【简答题】B In the 60s, people asked about your astrological (about star) sign. In the 90s, they want to know your website. These days, having a web address is almost as important as a street address. Your webs...
【简答题】已知一双筋矩形截面梁,截面尺寸 ,混凝土强度等级为C25,HRB400钢筋,环境类别为一类,承受弯矩设计值为280KN.m,如果受压区配置了2根直径20mm的受压钢筋,试求纵向受拉钢筋的截面面积。