注射剂生产时使用活性炭的目的是
A.吸附热原
B.增加药物稳定性
C.助滤
D.吸附色素
E.吸附杂质
参考答案:A,C,D,E
He _____ 50 yuan buying books last weekend. [ ]
A. paid for
B. spent
C. cost
D. took
α-丁酸萘酚酯酶(α-NBE)染色时与重氮盐偶联成有色沉淀是()
A.α-丁酸
B.α-萘酯
C.α-酯酶
D.α-萘酚
E.α-酸萘酚