一般弃土运距过远的傍山路堑,可采用()。
A.混合式开挖法
B.分层纵挖法
C.通道纵挖法
D.分段纵挖法
参考答案:D
There was __________to prevent the accident. [ ]
A. something that we could to do
B. something could do
C. nothing we could do
D. anything which we could do
状态参数为()
A.按韧性、刚度、稳定性等要求控制的量
B.按强度、刚度、安全性等要求控制的量
C.按强度、韧性、稳定性等要求控制的量
D.按强度、刚度、稳定性等要求控制的量