【单选题】My cousin is _____________ sometimes. It’s hard for him to change his mind even though his idea is not right.
【单选题】Although he sometimes lost his temper, his pupils liked him______for it.
【简答题】请观看视频17分51秒处,描述 常见的 箱型截面的类型,并说明各自适应什么情况?
【单选题】楼层框架梁侧面受扭纵筋的搭接长度与锚固长度为( )。
【单选题】时间常数是指心电图机的输出幅度从 100%下降到 所需的时间。