齿轮或各种变截面的机械零件探伤时,在截面发生急剧变化的外表面上,由于磁通量不均,产生的伪缺陷易与()混淆。
A、锻造裂纹
B、淬火裂纹
C、磨削裂纹
D、焊接裂纹
参考答案:B
If the Vendor is unable to make delivery,or to make delivery in good time,owing to force majeure then the Vendor’s obligation to deliver shall().
A.cease
B.stop
C.suspend
D.delete