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[单选题]
按《电力金具通用技术条件》规定,连接金具加工时,板厚大于()的金具螺栓孔不应冲制。
A.12mm
B.14mm
C.16mm
D.18mm
查看答案
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A.12mm
B.14mm
C.16mm
D.18mm
A、焊缝应为细密平整的细麟形,并应封边,咬边深度不大于1mm
B、焊缝应为细密平整的细麟形,并应封边,咬边深度不大于0.5mm
C、焊缝应无裂纹、气孔、夹渣、锌灰等缺陷
D、焊缝应无裂纹、夹渣、锌灰等缺陷,允许存在单个直经不超过0.5mm的气孔
A、外观检查
B、温升试验
C、成分检测
D、以上都是