正火能消除过共析钢中的网状渗碳体，为（）作资质准备。
A.完全退火
B.球化退火
C.去应力退火
D.均匀化退火
参考答案：B
In math exam, the _______ careful you are, the _______ mistakes you'll make. [ ]
A. more, more
B. more, less
C. less, fewer
D. more, fewer
影响浸出毛油质量的因素有哪些？
