保藏病毒毒种最好的方法是()
A.-20℃冷藏
B.液氮保存
C.50%中性甘油保存
D.冷冻真空干燥法
E.动物接种
参考答案:D
The models are wearing clothes . [ ]
A. in 1980s
B. from the 1980
C. in the 1980
D. from the 1980s
08Al的含Al量为0.8%。()