问题
单项选择题
对HPLC法进行精密度考查时，试验数据的相对标准差一般不应大于
A．1％
B．2％
C．3％
D．4％
E．5％
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
对HPLC法进行精密度考查时，试验数据的相对标准差一般不应大于
A．1％
B．2％
C．3％
D．4％
E．5％
参考答案：B
任务型阅读.（10分） A: 2576321. Guizhou Museum. This is Jenny speaking. How can I help you? B: Hi, I’d like to buy tickets for the Picasso Exhibition(展览). I would like to know when I can go and how much the tickets are. A: Hmm, let me see. The exhibition is open from 9:00 a.m. to 7:00 p.m. on weekdays（工作日）, and from 3:00 p.m. to 9:00 p.m. on weekends（周末）. B: Weekdays, 9:00 a.m. to 7:00 p.m., weekends, 3:00 p.m. to 9:00 p.m., got it. Thank you. And what about the prices? A: It’s＄12 for adults, half for children, and one third for groups（团体）. B: I see. How many people do we need to have to make up a group? A: At least 6. B: I see. Do I have to order（订购）tickets now, or can I buy them when I get there? A: You can buy them here. The exhibition is on the second floor of the museum, Hall 3. B: Second floor, Hall 3. Thank you.
|