【单选题】“扬州八怪”是指()朝活跃在扬州的八位风格相近的革新派画家。
【单选题】When Tom was about to speak,his father looked at him,__________ to stop him.A.as regards#
A.
When Tom was about to speak,his father looked at him,__________ to stop him. A.as regards
【单选题】下列不属于按照几何特征分类的结构是( )
【简答题】液压泵的排量是指泵每转一转,由其()液体的体积,用()表示,常用单位()。
【简答题】液压泵的排量是指液压泵每转一周,由其____________________变化计算而得的排出液体的体积。
【简答题】根据句意,用括号内所给单词的适当形式填空。 小题1:His father looked______ (angry)at his son. Because he often makes mistakes. 小题2:Next Sunday will be my brother’s __________ ( nine ) birthday. 小题3:The children are very happ...
【单选题】下面说法中错误的一项是( ):
A.
多余约束是从对体系的自由度是否有影响的角度看是多余的
B.
有多余约束并且几何不变是超静定结构的几何特征
D.
在一个由4根直杆用刚结点连接而成的封闭框上加一个铰相当于减少2个约束