红外光谱中磺酰胺的S=O收缩振动峰位置在A.1300cm-1 B.3460cm-1 发布时间:2018-07-18 01:07 │ 来源:www.tikuol.com 题型:单项选择题 问题: 红外光谱中磺酰胺的S=O收缩振动峰位置在A.1300cm-1B.3460cm-1C.1360cm-1D.920cm-1E.1463cm-1
题型:单项选择题 用方框中所给单词的适当形式填空。每词限用一次。take after ; snack ; death ; pass ; America小题1:He ______his father. They are both kind and clever.小题2:I’m hungry and thirsty. Let’s go and buy some drinks and ______.小题3:The ______of her little dog made him very sad.小题4:Could you _____ the knife to me? We need them to make lanterns.小题5:It is said that many ______teenagers will come to watch the 2014 Youth Olympic Games. 查看答案