钻孔灌注桩施工工艺流程?
桩位放样-埋设护筒-桩机就位-钻孔-清孔、验孔-吊放钢筋笼-设立导管-灌注水下砼-养护。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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