提高微粒分散体系的稳定性的方法错误的是()
A.减小粒径
B.增加介质的黏度
C.降低微粒与分散介质的密度差
D.提高微粒粒径的均匀性
E.减小介质的黏度
参考答案:E
Matt is now getting on very well with his new job and he earns he did last year.[ ]
A. twice as much as
B. as twice much as
C. twice as many as
D. as twice many as
计量员的权力包括()
A.拒绝违反计量规程及违反安全规定的操作,但可以不执行规范操作
B.拒绝使用超周期的计量器具,但可以使用规程之外的计量器具
C.拒绝出具虚假计量数据
D.可对他人出具的计量数据提出质疑