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[单选题]
已知厚度22mm钢板对接焊缝宽度18mm,焊缝加强高1.5mm,V形坡口,使用2.5MHz10×12mm斜探头,其前沿长度(入射点至探头前端面距离)11.5mm,应选用最佳探头标称折射角度为()。
A.45°
B.60°
C.70°
D.以上都不对
查看答案
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A.45°
B.60°
C.70°
D.以上都不对
A.45°
B.60°
C.70°
A.16mm
B.22mm
C.28mm
D.36mm
A.b+60
B.Ls+60
C.+60
D.ts+60