单向板肋梁楼盖按弹性理论方法计算连续梁的内力时,其活荷载的不利布置规律()。 A. 若需求某跨跨中最大正弯矩时,除了必须在该跨布置活荷载外,还须每隔一跨布置活荷载; B. 若需求某跨跨中最大负弯矩时,除了必须在该跨布置活荷载外,还、右两相邻跨布置活荷载,然后再隔跨布置活荷载; C. 若需求某支座截面处最大负弯矩时,该支座左、右两跨均布置活荷载,然后隔跨布置活荷载; D. 若儒求某支座截面处最大剪力时,该支座左、右两跨均布置活荷载,然后隔跨布置活荷载;
【简答题】Playing video s on his iPad in a chair, Justin Bieber looks like any 16-year-old. But when he opens his mouth, you know he’s different – the Canadian can really sing. Do you like listening to...
【简答题】补全对话(共5小题,每题1分,满分5分) 根据对话内容,从方框中选择五个合适的句子补全对话,并将所选答案的字母序号写在方框下面的横线上。 David (D) and Tina (T) are talking about what they are going to do in the future. T: What are you going to do after leaving school?...