Which of the following is a good example of tailoring your book to the situation?
A. Reading a very difficult book while waiting for your coffee.
B. Pick a breezy book when you have time to focus and want to have some serious reading.
C. Reading an encyclopedic book while commuting·
D. Find something that's a little more involved when you have time to focus
查看答案
According to the passage,if you want to read more books,which of the following is NOT the right way?
A. Wait for the right time to read when you can focus well.
B. Read in the mornings of weekends.
C. Read whenever,wherever.
D. Pick a book suitable for the situation.
芦丁的含量测定采用的方法是（ ）
A. 滴定法
B. HPLC法
C. GC法
D. 分光光度法
Colorimetric determination of Rutin, the wavelength is（ ）
A. 400 nm
B. 361 nm
C. 510nm
D. 256nm
在光度分析中，某有色溶液的最大吸收波长（）
A. 随溶液浓度的增大而增大
B. 随溶液浓度的增大而减小
C. 与有色溶液浓度无关
D. 随溶液浓度的变化而变化
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