A.水準(zhǔn)儀 B.經(jīng)緯儀 C.全站儀 D.激光鉛直儀
A.1mm B.2mm C.3mm D.4mm
A.HRB400帶肋鋼筋的冷拉率不宜大于4% B.調(diào)直后的鋼筋應(yīng)平直,不應(yīng)有局部彎折 C.鋼筋的切斷口不得有起彎現(xiàn)象 D.對(duì)于彎折過度的鋼筋不得回彎