图中能正确描述物理量之间关系的图是 [ ] A. B. C. D.

口腔黏膜中药物渗透性能顺序为

A．舌下黏膜＞牙龈、硬腭黏膜＞颊黏膜

B．颊黏膜＞舌下黏膜＞牙龈、硬腭黏膜

C．颊黏膜＞牙龈、硬腭黏膜＞舌下黏膜

D．牙龈、硬腭黏膜＞颊黏膜＞舌下黏膜

E．舌下黏膜＞颊黏膜＞牙龈、硬腭黏膜

锭状铁合金，含碳4%，铁50%，锰35%及其他一些元素

—           , Tony?  

—She was born in Cambridge. [ ]

A. Where were you born  

B. When were you born  

C. Where was Mrs. Green born  

D. When was Mrs. Green born

（）开创了中国文学史的“悲秋”主题。

简述微粉砂轮超精密磨削的特点。