You are going to make a short speech to congratulate Li Wei, one of your best friends on an offer for him from Stanford University. Prepare it in a group of three or four based on the speech above and present it in class next time. (备注:请上传录音)
【简答题】Cr17Mo不锈钢的平均碳含量为 。A. 1.02% B. 0.102% C. 0.01% 88. B 钢是铁素体型不锈钢。 A.12Cr13 B.10Cr17 C.06Cr19Ni10 89. C 钢是马氏体型不锈钢。 A.06Cr19Ni10 B.10Cr17 C.12Cr13 90.12Cr18Ni9奥氏体型不锈钢,进行固溶处理的目的是 B 。 A.获得单一的马氏体组织,提高硬度和耐磨性 B...