多項(xiàng)選擇題

單層鋼結(jié)構(gòu)安裝工程中,地腳螺栓(錨栓)尺寸的允許偏差為()。

A.螺栓(錨栓)露出長度+30.0mm,0.0mm
B.螺栓(錨栓)露出長度+20.0mm,0.0mm
C.螺栓(錨栓)露出長度+30.0mm,5.0mm
D.螺紋長度+30.0mm,0.0mm
E.螺紋長度+20.0mm,0.0mm

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