钢结构二级焊缝不得有( )缺陷。A.表面气孔 B.根部收缩 C.咬边 D.弧坑裂纹 E.夹渣

作者: tihaiku 人气: - 评论: 0
问题 钢结构二级焊缝不得有( )缺陷。
选项 A.表面气孔 B.根部收缩 C.咬边 D.弧坑裂纹 E.夹渣
答案 ADE
解析 钢结构的一级、二级焊缝不得有表面气孔、夹渣、弧坑裂纹、电弧擦伤等缺陷,且一级焊缝不得有咬边、未焊满、根部收缩等缺陷。

相关内容:钢结构,焊缝,缺陷,表面,气孔,根部,咬边,弧坑,裂纹,夹渣

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