A.地層滑坡B.膨脹性土壓C.承載力不足D.無仰拱
A.針入度及針入度比B.軟化點及軟化點增值C.粘度及粘度比D.密度及密度比
A.公路等級B.交通量C.當(dāng)?shù)亟?jīng)濟(jì)條件D.已有經(jīng)驗