A.預(yù)應(yīng)力筋斷裂,夾具未破壞 B.預(yù)應(yīng)力筋未斷裂,夾具破壞 C.預(yù)應(yīng)力筋未斷裂,夾具未破壞 D.預(yù)應(yīng)力筋斷裂,夾具破壞
A.30% B.50% C.75% D.100%
A.2h B.5h C.12h D.24h