磁粉探伤后,零件不需进行退磁的理由是()。
A、零件下道工序是热处理
B、零件下道工序是垂直方向小规范的充磁
C、下道工序是反向充磁
D、以上都对
参考答案:A
目标监测包括()
A.ICU病人的监测
B.新生儿的监测
C.外科术后病人的监测
D.抗感染药物耐药性的监测
E.抗生素使用率的监测
Which of the following leads to the Nikkei average’s plunge()
A.The poor performance of the powerful New York bond market.
B.A sudden surge in profits from its overseas operation.
C.Drexol is back in the black after two years of disappointing results.
D.None of the above.