常用于不耐热的中药粉针剂干燥的方法是
A.鼓式干燥
B.减压干燥
C.冷冻干燥
D.喷雾干燥
E.沸腾干燥
参考答案:C
解析:不耐热的中药粉针剂需无菌操作,宜采用冷冻干燥法干燥。选C。
It is important______English both in clsss and after class.[ ]
A.to speak
B.spoke
C.are spooken
D.speak
A.referent
B.reference
C.referance
D.refering