气相色谱固定相中气液色谱固定液和组分分子间的作用力有 、 、 和

A．组分与固定液分子间的作用力大于组分分子间的作用力

B．组分与固定液分子间的作用力大于固定液分子间的作用力

C．组分与固定液分子间的作用力大于载气分子间的作用力

D．组分与固定液分子间的作用力大于组分分子间和固定液分子间的作用力

A．作用力越小，保留值越小  B．作用力越小，保留值越大

C．作用力越大，保留值越大  D．作用力越大，保留值越小

A．组分和载气  B．载气和固定液  C．组分和固定液  D．组分和担体

A.静电力

B.诱导力

C.色散力

D.氢键力

E.化学键

听力原文：W: You must be pretty excitedbout your trip to Europe. When do you leve M: In听力原文：W: You must be pretty excitedbout your trip to Europe. When do you leve M: In just three weeks.nd I’m excited! But therere still few things I need to do before I go. Wht do we lern from the converstion The mn needs three weeks to do something before leving for Europe. B．Something prevents the mn from going to Europe. C．The womn is leving for Europe very soon. D．The mn is excitedbout his trip to Europe.

A．The man needs three weeks to do something before leaving for Europe

B．Something prevents the man from going to Europe

C．The woman is leaving for Europe very soon．

D．The man is excited about his trip to Europ

E．