Tuesday, September 27, 2022
Wednesday, September 21, 2022
用普通砖、多孔砖砌筑的墙体,当抗震承载力验算不满足要求时,应首先考虑下列何项措施?( )...
Saturday, September 24, 2022
Saturday, September 24, 2022
图所示某临时性屋架端节点的单齿连接,齿深范围内的弓形垂直面积为10400mm2。上下弦夹角26°34',已知上弦杆O1的轴向力设计值(N=70kN。) ...
Saturday, September 24, 2022
Friday, September 23, 2022
Saturday, September 24, 2022
一平面余弦波波源的振动周期T=0.5s,所激起的波的波长λ=10m,振幅为0.5m,当t=0时,波源处振动的位移恰为正向最大值,取波源处为原点并设波沿x轴正向传播,此波的波动方程为( )。 ...
Tuesday, September 27, 2022
Saturday, September 24, 2022
如图所示,采用毕托管测量空气的流速,测量介质用水,现改为密度为水的0.8倍的酒精,流速不变,则比压计读数h变为原来的( )倍。 ...
Tuesday, September 27, 2022
只在两端受相同外扭矩的钢杆和铝杆,长度和直径也分别相同,则有结论( )。...
Tuesday, September 27, 2022
模型和原型结构,对各种物理参数相似的要求,以下哪一项是不正确的? ...
Wednesday, September 21, 2022