氧化铁皮常见的杂质类型一般有:()、()、()及()等。
参考答案:炉渣;污泥;铁条;砖头
— Can you keep an eye on my bag? I need to go to the washing closet.
— _____. It’ll be safe with me.
A.It’s my pleasure
B.Never mind
C.Go ahead
D.Forget it
DCS死机时现象如何?应该如何操作?