粗苯回收率是粗苯生产的重要考核指标,以下哪些因素会影响到粗苯的回收率()
A、吸收温度
B、洗油的相对分子质量及洗油循环量
C、贫油含苯量
D、吸收面积
参考答案:A, B, C, D
Whatever achievements you have achieved, you should not be ______with them. If you ____, it is
unlikely that you will make further achievements. [ ]
A. satisfied; do
B. content; do
C. satisfied; are
D. contented; are
()成型是磁性材料生产中最常用的成型方法。