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《客运专线铁路桥涵工程施工质量验收暂行标准》第6.5.3条钻孔桩护筒应（），护筒埋设应符合（）设计要求。
A . A、施工工艺、坚实不漏水
B . B、坚实不漏水、施工工艺
C . C、坚实不漏水、施工细则
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