熔池熔炼与闪速熔炼的最主要区别在什么地方?
参考答案:
最主要的区别在于,熔池熔炼中硫化铜精矿发生的熔炼和吹炼反应主要不是在炉膛空间进行,而主要发生在冶金炉熔池中。
______ you are supposed to do ______ you don't like a thing is ______ it. Don't complain.
A.That; what; change
B.When; that; to change
C.What; when;to change
D.What; that; changing
杀毒软件可以查杀所有的病毒么?