粉末直接压片时，既可作稀释剂、还可作黏合剂、崩解剂的辅料是（）
A.糖粉
B.甘露醇
C.淀粉
D.糊精
E.微晶纤维素
参考答案：E
I met a friend of mine _____ in the street yesterday . [ ]
A. by accident
B. by the end
C. by mistake
D. by car
尸斑发展过程中分哪三期？
