Cr18Ni9Ti钢中Ni元素的主要作用是（）
A．细化晶粒
B．提高淬透性
C．获得单相奥氏体组织
D．提高强度
参考答案：C
根据汉语提示,完成句子。
1.They have ________(讨论)the important questions already.
2.He though his father was a ________(伟大的)man.
3.Many people lost their ________(生命)in the war.
4.What ________(使)you happy, Danny?
5.If you're ________(努力工作), you'll succeed.
《暗黑破坏神》的开发商是哪家？（）
A.Blizzard
B.W-inds
C.嵐
D.晴天小猪
