A.不得大于鋼筋公稱直的0.6倍 B.不得大于鋼筋公稱直的0.5倍 C.不得大于鋼筋公稱直的0.7倍 D.不得大于鋼筋公稱直的0.8倍
A.16mm B.20mm C.25mm D.12mm
A.10-35℃ B.15-25℃ C.10-25℃ D.23±5℃