5.If an overall pattern (sometimes circular lines) appears on the test surfaces, how would the inspector reprocess the test piece? 如果零件上出现遍及表面的显示(有时是环形线),探伤者应如何重新处理试件? A.Retest at a higher amperage. 用较高的安培值重新磁化 B.Demagnetize 退磁 C.Retest at lower amperage 用较低的安培值重新磁化 D.Both A and B A和B
这题选什么啊 ???题目表达的是什么个意思啊 ? |