普通片
参考答案：
药物与辅料混合压制而成的未包衣的片剂.
In some areas, quite a lot of students have to work at a very early age,
as they usually don'thave money ____ go to school. [ ]
A. enough; for
B. enough; to
C. much; couldn' t
D. many; can't
离心泵的扬程与叶轮的圆周速度U2（），而U2与叶轮的半径和转速成（）。
