判断题
A.100mm B.110mm C.140mm D.180mm
A.GB/T228-2002 B.GB/T238-2002 C.GB/T238-1999 D.GB/T228-1987
A.电弧焊接头 B.锥螺纹接头 C.直螺纹接头 D.套筒挤压接头
A.越低B.越高C.不变D.二者无关
A.12mm B.14mm C.16mm D.18mm
A.100 B.150 C.200 D.300
A.一拉一弯 B.一拉两弯 C.两拉一弯 D.两拉两弯
A.9次 B.8次 C.合格 D.不合格
A.0.5 B.0.3 C.1.0 D.1.2