正确论述膜剂的是（） A.只能外用 B.多采用热熔法制备 C.最常用的成膜材料是聚乙 发布时间：2017-08-04 10:17 │ 来源：www.tikuol.com 题型：单项选择题 A1/A2型题 问题： 正确论述膜剂的是（）A.只能外用B.多采用热熔法制备C.最常用的成膜材料是聚乙二醇D.为释药速度单一的制剂E.可以加入矫味剂，如甜菊苷
题型：单项选择题 A1/A2型题 选词填空。good, because, taking, through, hobbies, each, collect Do you have any hobbies? If we don't have any 1._______ except school work, we may become boring people. And that can influence our studies. Studying without relaxing isn't 2._______ for health. We can' t get good grades if we have bad health. We should make use of our free time. We should do something we like. Some people like singing, 3._______ photos and drawing pictures. Other people prefer collecting stamps, reading or shopping. I have a few hobbies, but my favorite one is collecting stamps. I like it best 4._______ I can learn a lot of things from stamps. Some people 5._______ stamps because they can get money from the stamps. But I am just interested in collecting them and enjoy looking at them when I am free. Stamp collecting is becoming more and more popular all over the world. I know an Australian boy and a French girl 6._______ the Internet. They also like collecting stamps. We show our stamps to 7._______other online. That is so cool. 查看答案
题型：单项选择题 A1/A2型题 有一包白色固体，可能含有碳酸钠、硫酸铜、硫酸钠、氯化钠等物质中的一种或几种。现取部分该固体溶于水，可得到澄清无色溶液，向其中滴入氯化钡溶液，产生白色沉淀，再加入足量的稀硝酸，沉淀部分消失。请回答：（1）该固体中一定含有 ，一定不含有 ，可能含有 （2）请你设计一个实验，证明白色固体中可能含有的物质是否存在 。 查看答案