炉渣碱度R>1是()渣。
A.氧化
B.还原
C.碱性
D.酸性
参考答案:C
Mr.Green told us ____ too much time ____ reading novels. [ ]
A. don't take; on
B. not to take; in
C. not to spend; in
D. don't spend; on
适用于阳模滚压的泥料应是可塑性较好的,而阴模滚压时,泥料的可塑性可以稍差些。