题目内容
(请给出正确答案)
[主观题]
钢轨探伤仪测距为纵波声程250mm,用70°探头发现钢轨内有一斜裂纹回波3.2~4.4格,则该裂纹距探测面
的垂直距离约为()。
A.75mm
B.41mm
C.27mm
D.15mm
提问人:网友wuqipanyifei
发布时间:2022-01-06
A.75mm
B.41mm
C.27mm
D.15mm
A.97mm
B. 176mm
C. 189mm
D. 150mm
A.75mm
B.41mm
C.27mm
D.15mm
A.75mm
B.41mm
C.27mm
D.15mm
A.73mm
B.67mm
C.71mm
D.34mm
A.73mm
B.67mm
C.71mm
D.34mm
A.164mm
B.90mm
C.49mm
D.55mm
A.97mm
B.176mm
C.189mm
D.100mm
A.150mm
B.100mm
C.75mm
D.50mm
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