C₂、C₈、C₁₈柱的亲至性依次减弱。

C18柱填充的固定相是()A. 活性炭L-1B. 硅胶键合碳八烷基C. 分子筛D. 硅胶键合碳十八烷基

[单选题](C18)A．prohibitedB．avoidedC．forbiddenD．consented

[单选题](C18)A．statedB．remarkedC．saidD．told

[试题]请问C18柱是正相还是反相色谱柱？CN柱呢？

[单选题](C8)A．toB．inC．forD．of

[单选题](C8)A．better thanB．other thanC．rather thanD．sooner than

[单选题](C8)A．despairB．worryC．panicD．moment

[单选题](C8)A．releasedB．producedC．investigatedD．conducted

[单选题](C8)A．puzzlesB．problemsC．freedomD．shortages

[单选题](C8)A．manufacturedB．arisenC．composedD．created