The speaker was an African-American woman.I am a member of a minority group myself,pursuing(追求)a doctor's degree in chemistry,so her comment resonated(共鸣)with me.这个答案可能会让一些人感到惊讶人。但是我完全明白她的意思。演讲者是一位非裔美国妇女,我本人也是少数民族的一员,正在攻读化学博士...
But two things are sure:【C3】___ else can do your studying for you, and unless you do find a system that works, you won"t although college. Meantime, there are a few rules that【C4】___ for everybody. The hint is "don"t get 【C5】___ ". The problem of studying,【C6】...
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In chemistry, PAH is a common abbreviation of polycyclic aromatic hydocarbons, substances consisting out of carbon and hydrogen and having more than one carbon ring with the special electronic structure to be “aromatic”. If we restrict “aromatic” to “benzenoid”, the simplest PAH would be ...
Subscripts are widely used in various fields. In mathematics, you might encounter subscripts when working with indices, such as in algebraic expressions, summations, or matrices. In chemistry, subscript is used to denote the number of atoms in a molecule, such as H₂O for water. In programm...
Although boron-containing compounds have been known for thousands of years, the element in its pure form was not isolated until 1808 by Sir Humphry Davy, Joseph-Louis Gay-Lussac, and Louis-Jacques Thénard, using a reaction between boric aci... Nov 26,2021Inorganic chemistry What is 1,2,4...
Which of the following sentences is RIGHT?A. Bill Gates was very famous because he found computers.. Bill Gates helped a lot to make computers easy for people C. Bill Gates' father let him go to Harvard University.D. Bill gates was the cleverest man in the world 2解阅读理解1 — —...
Is independent component analysis appropriate for multivariate resolution in analytical chemistry? We present an analytical comparison between linear slow feature analysis and second-order independent component analysis, and show that in the case of one ... Parastar,H.,Jalali-Heravi,... - 《Trends ...
(每小 1 分, 共 15 分) 1.Look at the chair.It is made What are the shirts made of? 分 100 分, 限 60 分 bamboo.It looks comfortable. A.in B.of C.into D.by 1. 答案 B be made of 表示“由⋯⋯制成” , 表示从成品中能够看出原资料。故答案 B。 2. — is the...
In chemistry, a tetravalence isthe state of an atom with four electrons available for covalent chemical bonding in its valence. ... Therefore, a carbon atom has four valence electrons. It could gain four electrons to form the C4- anion or lose four electrons to form the C4+ cation. ...