Part I: Listening Comprehension(15% (20 minutes Section A Directions: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation

I. Give Chinese meanings to the words and phrases below: 1)accompany 2)accurate 3)adequate 4 ac

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显然,a不是厄米算符,a≠a。但ata是厄米算符,(ata)=a'a。 问题:aa是什么力学量? [a=0,∴与i共同本征态,只要求解了首的本征方程,就求解了 的本征方程

1.设A是n阶矩阵,且经过 Gauss消去法一步消去后变为an (0A2 证明: (1)如果A是实对称矩阵,那么A2也是对称的; (2)如果ala(i=1,2,L,n),称A为(按行)严格对角占优矩阵,那么A2也是严格对角 占优

Microorganisms are the most diversified and interesting to study. Microbiology is one of the most active and promising field in life sciences. I will try to integrate the most classical and basic ideas theories and concepts with the most recent advances in microbiology, which are so exciting and full of fun to know about

一、i囊蚴( encysted metacercaria) 二、感染期( infective stage,感染阶段) 指寄生虫能使人感染的阶段在鱼肉中的

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I Classification of Rearrangement Reactions() II Nucleophilic rearrangement() 1 Wagner-Meerwein rearrangement( 2 Pinacolic Rearrangement 3 a-ethandione Rearrangement 4 Beckmann Rearrangement 5 Baeyer-Villiger Rearrangement