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下列对于灌注桩施工工艺特点的说法中,正确的是()。

多选题
2021-12-29 11:13
A、正反循环钻孔灌注桩施工工艺适用范围较窄,且泥浆排量较大
B、长螺旋钻孔灌注桩施工工艺不需要泥浆护壁
C、旋挖成孔灌注桩宜用于碎石土、风化岩层
D、冲钻灌注桩施工工艺适用于碎石土、大孤石,但成孔效率低
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正确答案
B| C

试题解析

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