O2进入细胞膜的机制属于()。
A.自由扩散
B.协助扩散
C.主动运输
D.渗透
参考答案:A
Apple sold ____ tablets ,the new ipad, in September alone as Samsung Galaxy series.
A.more than twice
B.as twice as many
C.twice as many as
D.more than twice as many
进口药品的审查机构是()
A.国务院药品监督管理部门
B.省级药品监督管理部门
C.县级药品监督管理部门
D.市级药品监督管理部门
E.地区药品监督管理部门