在气相色谱法中，某组分的保留时间为5min，空气的保留时间为1min_爱下问搜题

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问题单项选择题

在气相色谱法中，某组分的保留时间为5min，空气的保留时间为1min，某组分的调整保留时间为（）。

A.1min

B.2min

C.3min

D.4min

E.5min

答案

参考答案：D

选择题

-Would you like to drink some coffee with some sugar or milk?

-Oh，I’d like some milk________the coffee.[ ]

A．added on

B．added to

C．added up to

D．added up

问答题简答题

应不应该保持正常体重？