TDS代表A．药物释放系统 B．透皮给药系统 C．多剂量给药系统 D．靶向制剂 E．

比较大小：-4.17______-4.15．

一般速度继电器转轴速达到120r/min以上时，其触头就动作。

脱肛的三度脱垂是（）

A.脱出物头圆而有长蒂，长5～10cm

B.脱出物淡红色，长3～5cm，柔软无弹性

C.直肠及部分乙状结肠脱出呈圆柱形

D.直肠全层脱出，呈圆锥状

E.脱出物呈颗粒状，如枣形

You ought to have had Tedy ________  Janet for his rudeness at the meeting yesterday. [ ]

A. to apologize  

B. apologize to

C. apologized to  

D. making an apology

If money is invested at r percent interest, compounded annually, the amount of the investment will double in approximately  years．If Pat’s parents invested $5,000 in a long-term and that pays 8 percent interest, compounded annually, what will be the approximate total amount of the investment 18 years later, when Pat is ready for college ？