问题
单项选择题
用气相色谱法对挥发油各组分进行定性鉴别时,常用色谱峰()
A.峰面积
B.峰高度
C.相对保留时间
D.峰丰度
E.裂解碎片
答案
参考答案:C
用气相色谱法对挥发油各组分进行定性鉴别时,常用色谱峰()
A.峰面积
B.峰高度
C.相对保留时间
D.峰丰度
E.裂解碎片
参考答案:C
P: Hi, Mark. I want to have a class party. __小题1:_ M: Sure, Andy. I can help you. So when shall we have the party? P: __小题2:__ M: No, it is too early today. If we have it today, half the class won’t come. P: OK, let’s have it tomorrow. M: Hmm…__小题3:__ Students will leave early to study for the test. Let’s have it on the weekend. P: OK, let’s have it on Saturday afternoon. We can all meet and watch a video. M: No, __小题4:___ Some students will be bored. Let’s play party games. P: OK, good idea. Can you organize the party games? M: Sure, I can do that. __小题5:__
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