A.接頭鋼筋應切掉 B.應清除浮渣和塵垢 C.接頭鋼筋應除銹 D.應鋪設水泥漿后澆筑混凝土
A.1:2:3:4 B.1:2:3.15:4.2 C.1.35:2:3.15:4.2 D.0.65:2:3.15:4.2
A.±5mm B.±10mm C.±15mm D.±20mm