35号钢铸造后存在魏氏体组织,再经正火处理后,得到均匀细小的铁素体与(),合机械性能大大改善。
A.珠光体
B.奥氏体
C.渗碳体
D.莱氏体
参考答案:A
How was it that we were able to _____ untold hardships, overcome the most difficult and dangerous
conditions and bring the revolution to victory? [ ]
A. survive on
B. survive from
C. survive
D. surviving
2008北京奥运会拳击比赛在哪里举行?()
A.首都体育馆
B.奥体中心体育馆
C.北京工业大学体育馆
D.工人体育馆