测定乙型肝炎病毒表面抗原的亚型有助于()
A.病原学诊断
B.流行病学调查
C.评定传染性大小
D.确定抗病毒治疗措施
E.判断预后
参考答案:B
根据句意及首字母或汉语提示完成单词。
1. China is a l _____ country with a long history.
2. What s _____ shoes would you like?
3. We often have rice,meat, _____ (马铃薯) for lunch every day.
4. What _____ (饮料) would you have?
5. We have many great _____ (特色菜) in the restaurant.
医疗事故鉴定为多少级鉴定制度()。
A.一级
B.二级
C.三级
D.四级
E.六级