采用悬挑梁进行悬挑架搭设时应验算悬挑梁()。
A.强度
B.刚度
C.抗倾覆
D.抗拉
E.硬度
参考答案:A, B, C
Nelson Mandela _________ his life to fighting for a free society________ all people live together in harmony.
A.devoted; which
B.spent; in which
C.devoted; in which
D.spent; where
某岩体结构面组数为3组,结构面平均间距0.4m,裂隙块状结构,6个室内饱和单轴抗压强度平均值为2.8MPa,变异系数为0.2,计算岩石地基承载力特征值接近()
A.240kPa
B.230kPa
C.260kPa
D.300kPa