判断题:梁式桥标准跨径是指以两个桥墩中线之间的距离或桥墩中线与台背前缘之间的距离。( )

题目内容:
梁式桥标准跨径是指以两个桥墩中线之间的距离或桥墩中线与台背前缘之间的距离。( )
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钻孔灌注桩柱桩基础,须嵌入基岩的有效深度一般不得小于( )(不包括风化岩)。

钻孔灌注桩柱桩基础,须嵌入基岩的有效深度一般不得小于( )(不包括风化岩)。

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