可作为粉末直接压片的“干黏合剂”使用的辅料是()
A.羟丙基甲基纤维素
B.硫酸钙
C.微晶纤维素
D.淀粉
E.糖粉
参考答案:C
The man ______ was a friend of mine.
A.you just talked to
B.whom you just talked to him
C.who you just talked to him
D.which you just talked to
外啮合齿轮泵位于轮齿逐渐进入啮合的一侧是()。
A.吸油腔
B.压油腔
C.困油腔