用位移法计算静定、超静定结构时,每根杆都视为( )。
A.单跨静定梁
B.单跨超静定梁
C.两端固定梁
D.一端固定而另一端铰支的梁
参考答案:B
解析:考查位移法基本原理
I used to _______ in the morning, but now I'm used to _______ before going to bed. [ ]
A. read; read
B. reading; read
C. read, reading
D. reading, reading
平原地区的通信铁塔的接地电阻应小于10欧姆。()