![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
雨季路堑开挖时,挖方边坡不宜一次挖到设计标高,坡面应预留()厚,待雨期过后整修到设计坡度。
A.10cm
B.20cm
C.30cm
D.50cm
查看答案
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.10cm
B.20cm
C.30cm
D.50cm
A.35m
B.50m
C.45m
D.20m
A.50m
B.35m
C.45m
D.55m
某矩形基坑,其底部尺寸为4*2米,开挖深度2.0米,坡度系数m=0.50,试计算其挖方量,若将土方用容量为2m3的运输车全部运走,需运多少车次(KS=1.20,K’S=1.05)