发蛀脱发可能伴有以下症状，除了：
A．皮脂溢出
B．头屑多
C．头皮瘙痒
D．头发片状脱落
E．毛发变黄，干枯
参考答案：D
---Wow, so many books here! How can you find the one you need?
---That’s easy. The books are according to subject．
A．judged
B．associated
C．classified
D．obtained
什么是自主维修体系？
