问题
多项选择题
液-液分配柱色谱用的载体主要有（）。
A.硅胶
B.聚酰胺
C.硅藻土
D.活性炭
E.纤维素粉
答案
参考答案：A, C, E
搜题请搜索小程序“爱下问搜题”
液-液分配柱色谱用的载体主要有（）。
A.硅胶
B.聚酰胺
C.硅藻土
D.活性炭
E.纤维素粉
参考答案：A, C, E
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| It’s never easy to admit(承认)you are in the wrong. We all _1__ to know the art of apology(道歉). Think how often you’ve done wrong. Then count how many__2 _you’ve expressed clearly you were _3 __. You can’t go to bed with an easy mind if you do__4 _about it.A doctorfriend, Mr Lieb, told me about a man who came to him with different kinds of signs: headaches, heart trouble and insomnia(失眠症).__ 5 _ some careful exams, Mr Lieb found nothing wrong with him andsaid, “If you don’t tell me what’s_ 6 _you, I can’t help you”.The man admitted he was cheating(骗取) his brother of his inheritance(遗产). Then and there the clever doctor_ 7 __the man write to his brother and __8 _his money. As soon as the letter was put into the post box, the man suddenly cried.“Thank you ,” he said to the doctor, “I think I’ve got well.” An apology can not only save a broken relationship(关系), but also make it__9 _. If you can think of someone who should be__ 10 an apology from you, do something about in right now | ||||
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