下列的数据是由气-液色谱在一根40cm长的填充柱上得到的:
求:
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What is the authors advice to
A. They treat the dollar with a little respect.
B. They try to win in the weak-dollar gamble.
C. They vacation at home rather than abroad.
D. They treasure their marriages all the more.
毛细管柱色谱仪的结构特点是什么?如何解决毛细管柱内径细所带来的问题?
A.Working in an emergency room.B.Watching horror movies.C.Listening to r
A. Working in an emergency room.
B. Watching horror movies.
C. Listening to rock music
Doing daily routines.
有甲、乙两根长度相同的色谱柱,测得它们在范第姆特方程式中的各项常数如下:甲柱:A=0.07cm,B=0.12cm2·s-1,C=0.02s;乙柱:A=0.11cm,B=0.10cm2·s-1,C=0.05s。求: