某弱酸性药在pH为5时约90%解离,其pKa为()
A.6
B.5
C.4
D.3
E.2
参考答案:C
Sandy is really a hard-working girl. She went to school _______ she had a fever.[ ]
A. because
B. though
C. so
发布在指定的医学杂志上仅宣传药品名称的处方药广告()
A.无需审查
B.由国家药品监督管理部门审查
C.由省级药品监督管理部门审查
D.由省级工商行政管理部门审查