题目内容

在施工图设计勘察阶段，平原地区塔基的勘探孔深度一般为其基础埋置深度以下（）倍基础底面宽度。（）

A. 0.5～1.0
B. 0.5～2.0
C. 1.9～2.0
D. 1.5～2.5

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