【单选题】下列关于企业年金的说法,错误的是( )。
【判断题】The fundamental mechanism by which enzymes enhance the rate of chemical reactions is that enzymes facilitate the formation of the transition state. ( )
【单选题】很多职工退休后最重要的收入来源将是( )。
【单选题】Which one of the following statement is NOT true about transition state theory?
A.
Transition state theory describes a hypothetical "transition state" that occurs in the space between the reactants and the products in a chemical reaction.
B.
The species that is formed during the transition state is known as the activated complex.
C.
The activated complex exists in a very long time because it has a great store of energy.
D.
The activated complex can either be converted into products, or it can “revert” back to reactants.
【判断题】Enzymes accelerate reactions by facilitating the formation of the transition state. ( )
【单选题】爱因斯坦指出光与物质有三种相互作用,( )是指处于高能级上的电子状态是不稳定的,它将自发地从高能级跃迁到低能级与空穴复合,同时释放出一个光子。
【单选题】很多职工退休后最重要的收入来源将是()。
【简答题】在研究光与物质的相互关系,爱因斯坦指出:光与物质的粒子体系的相互作用主要有哪三种过程?
【单选题】The reaction pathway diagram below illustrates the energies of the reactants, the products and the transition state of a reaction.