PVC材料的主要组成为()。
A.聚氯乙烯树脂
B.填充剂
C.增塑剂
D.附着力增强剂
E.防止发泡剂
参考答案:A, B, C, D, E
对肾病患者口服地高辛应当调整给药方案,哪种给药方案更为合理
A.减少剂量降低药物峰浓度
B.减少剂量降低药物谷浓度
C.增加给药间隔降低谷浓度
D.增加给药间隔降低峰浓度
E.增加给药间隔提高谷浓度
Questions 1-4
Why does the advertiser put the celebrity on TV to talk about a particular product?()
A.To better explain how to use that product.
B.To help reduce the promotion cost of that product.
C.To induce more famous people to use that product.
D.To get TV viewers to remember that product.