亲脂性的碱性成分如游离生物碱可采用的分离方法是()
A.结晶法
B.醇提水沉
C.盐析法
D.铅盐沉淀法
E.酸溶碱沉法
参考答案:E
A lot of people find it useful to have a phrasebook when they travel to a country _____they don’t know the language.
A.where
B.when
C.why
D.which
SSCP(single strand conformation polymorphism,单链构象多态性)