【多选题】薄层色谱检识黄酮类化合物时,常用显色试剂有
【单选题】It’s going to rain .Take your
【单选题】—It’s sunny in Sanya today. But tomorrow? — The radio says it’s going to rain. You’d better take an umbrella when you go to Hainan.
A.
what’s the weather in Sanya
B.
how’s the weather like in Sanya
C.
what’s the weather like in Sanya
D.
how the weather is in Sanya
【多选题】薄层色谱检识黄酮类化合物时,常用显色试剂有:
【多选题】薄层色谱检识黄酮类化合物时,常用的显色试剂有
【单选题】I’m afraid it’s going to rain.
【简答题】Choose the correct sentence in each set of three. 1 A. It’s going to rain. Close the windows. B. It’s going to rain, close the windows. C. It’s going to rain close the windows.
【多选题】薄层色谱检识黄酮类化合物时,常用的显色试剂有