A.5-10m B.10-15m C.15-20m D.20-25m
A.φ48㎜×3.5㎜ B.φ50㎜×3.5㎜ C.φ55㎜×4.5㎜ D.φ48㎜×2.2㎜
A.沉管成孔 B.泥浆护壁钻孔 C.人工挖孔 D.振动沉管成孔
A.50% B.100% C.75% D.25%
A.2层 B.3层 C.4层 D.5层
A.1.00m B.1.25m C.1.50m D.2.00m
A.端承摩擦桩 B.摩擦桩 C.摩擦端承桩 D.端承桩
A.提高构件的抗裂度B.提高构件的承载力C.提高构件的承载力和抗裂度D.提高构件的刚度和抗裂度
A.1/10~1/15 B.1/15~1/20 C.1/20~1/25 D.1/30~1/40
A.10~15mm B.20~25mm C.25~30mm D.15~20mm
A.30 B.60 C.90 D.120