A.袋裝土(石渣)B.砌石C.砌磚墻D.修筑土埂E.鋼圍擋
A.1mB.2mC.3mD.4m
A.只削坡,不開級(jí)B.應(yīng)留出齒槽,槽上修筑明溝和滲溝C.削坡后的坡比大于1:1D.削坡后的坡比小于1:1