单选题:外用制剂常用哪一种表面活性剂作为防腐剂

题目内容:
外用制剂常用哪一种表面活性剂作为防腐剂 A.司盘80
B.月桂醇硫酸钠
C.洁尔灭
D.卵磷脂
E.十二烷基苯磺酸钠
参考答案:
答案解析:

切面皮部墨绿色或棕褐色,木部灰黄色或黄褐色,可见放射状排列的导管束纹,形成层部位名有深色环的饮片是(  )。

切面皮部墨绿色或棕褐色,木部灰黄色或黄褐色,可见放射状排列的导管束纹,形成层部位名有深色环的饮片是(  )。A.莪术 B.川芎 C.续断 D.羌活 E.生地黄

查看答案

化合物的结构类型为

化合物的结构类型为A.简单吡啶类生物碱 B.双稠哌啶类生物碱 C.有机胺类生物碱 D.喹啉类生物碱 E.莨菪烷类生物碱

查看答案

Whatdo the writers disapprove concerning the current situati

Whatdo the writers disapprove concerning the current situation of attractingrecr

查看答案

Which of the following is a referential question?

Which of the following is a referential question?A. Wherewas Yang Liwei born? B.

查看答案

Which of the following is a communicative task?

Which of the following is a communicative task?A.Reading aloud the dialogue on p

查看答案