挥发油低温放置可以析出固体,利用这种性质用于挥发油分离的方法是()
A.溶剂萃取法
B.分馏法
C.冷冻法
D.沉淀法
E.超临界流体萃取法
参考答案:C
Not only _____ polluted, but _____ crowded.
A.was the city; were the streets
B.the city was; the streets were
C.was the city; the streets were
D.the city was; were the streets
目前,披露上市交易公告书的基金品种主要有()。
A.开放式基金
B.封闭式基金
C.上市开放式基金
D.交易型开放式指数基金