企业经营观念与其经营环境并没有直接的关系。
参考答案:错
---Where did you ______ our chemistry teacher?
---It was in the supermarket ______ I purchased moon cakes.
A.come to, where
B.come across, that
C.come across, where
D.come to, that
经皮吸收制剂中可作控释膜的材料是
A.铝箔
B.乙烯-醋酸乙烯共聚物
C.聚乙烯
D.聚氯乙烯
E.聚乙烯醇