被动转运的药物其半衰期依赖于()
A.剂量
B.分布容积
C.消除速率
D.给药途径
E.饮食
参考答案:C
The famous writer _____ one new book in the past two year.[ ]
A. is writing
B. was writing
C. wrote
D. has written
影响钢尺量距误差的因素有哪些()。
A.读数误差
B.尺长误差
C.大气折光
D.都不对