在测定不能与滤纸一起灼烧的沉淀时,应选用的过滤沉淀仪器是()。
A、长颈漏斗
B、短颈漏斗
C、分液漏斗
D、微孔玻璃坩埚
参考答案:D
Recently I bought an ancient Chinese vase, ____was very reasonable. [ ]
A. which price
B. the price of which
C. its price
D. the price of whose
举例说明生殖激素的两种分类方法。