浇筑预制构件混凝土从出机到浇筑时间即间歇时间不宜超过()A.50minB.30minC.60minD.40min 浇筑预制构件混凝土从出机到浇筑时间即间歇时间不宜超过()A、50minB、30minC、60minD、40min 发布时间:2025-01-20 01:31:04