All of the following choices represent inputs to the activity resource estimating process EXCEPT:

A．Organizational process asset

B．Activity lis

C．The actual final cost of the last projec

D．Enterprise environmental factor

口服吸收较少，可用于肠内阿米巴病的是（）

A.甲硝唑

B.二氯尼特

C.喹碘方

D.氯喹

E.乙酰砷胺