旋光度测定中（） A.测定前后应以溶剂作空白校正 B.对测定管注入供试液时，勿使发生 发布时间：2017-05-29 00:24 │ 来源：www.tikuol.com 题型：多项选择题 X型题 问题： 旋光度测定中（）A.测定前后应以溶剂作空白校正B.对测定管注入供试液时，勿使发生气泡C.使用日光作光源D.配制溶液及测定时，温度均应在20℃±0.5℃E.读数3次，取平均值
题型：多项选择题 X型题 用方框中所给单词的适当形式填空，使短文完整正确。（每个单词限用一次）good job come dress own parent hold nothing how necessary Now lots of parents. will buy everything that their children want to have. If they go on with the habit, their children won't know the money 1 from hard work. Some parents like to 2 birthday parties for their children. If they keep on doing this, their children will think it 3 for them to enjoy birthday parties every year. Year after year, maybe they will forget their 4 birthdays and only remember their 5 . It is against traditional habits. Many parents don't let the children do housework. They think children have only one thing to do. They should study hard and do 6 in their lessons. If parents go on doing this, the children will only learn to open their mouths to be fed and stretch out (伸出) their arms to be _7 every day. When the children grow up, they will be able to do 8 , and they won't even find a _9 .Parents should teach the children 10 to do housework because it can help them start good habits of working by themselves.1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____ 查看答案
题型：多项选择题 X型题 软件设计分为两个层次：总体设计和详细设计。每个层次的设计都要用到很多设计工具。Ⅰ．HIPO图 Ⅱ．程序流程图Ⅲ．N—S图 Ⅳ．PAD图Ⅴ．结构图以上哪种(些) 属于详细设计阶段使用的工具A) Ⅰ、Ⅱ和Ⅲ B) Ⅱ、Ⅲ和Ⅳ C) Ⅰ、Ⅲ和Ⅳ D) Ⅱ、Ⅳ和Ⅴ 查看答案