对盛钢桶内进行喷粉处理（TN或SL）的主要作用（）。
A.均匀成份
B.调节温度
C.脱硫及改变夹杂物形态
D.调整钢液粘度
参考答案：C
. —Why didn’t you response to their greeting?
—Sorry. I ______they ______ to me.
A．don’t realize; are waving
B．don’t realize; were waving
C．didn’t realize; were waving
D．didn’t realize; are waving
纪检监察机关的职责是什么？
