氧化精炼
参考答案:
氧化精炼是利用氧将金属中的杂质氧化成渣或生成气体而将渣排除的过程,其实质是利用化合作用除渣。
以下C++语言中用于单行注释的是( )。
A. 继承性
B. 功能分解,逐步求精
C. 封装性和信息隐藏
D. 多态性
Why are the private lands surrounding Glacier National Park so important
A.They function as a hunting preserve.
B.They are restricted to government use.
C.They are heavily populated.
D.They contain natural habitats of threatened species.