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Part I Structure(30%) Directions: In this section, there are 20 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A), B), C and D). Then you should mark the corresponding letter on the Answer Sheet with the size of the whole earth, the highest mountain does not seem high at all

离子液体电沉积铝技术具有广阔的应用前景，而添加剂是提高铝镀层性能的有效方法，但相关作用机制还有待明确。本文应用量子化学和分子动力学模拟研究了二氯甲烷（DCM）和甲苯(C7H8)对氯化-1-丁基-3-甲基咪唑/三氯化铝([BMIM]Cl/AlCl3)体系的微观结构、物理化学性质和铝电沉积的影响。发现DCM易与阴、阳离子形成氢键，分布在阴阳离子之间使得阴阳离子间距离增加、相互作用能减小, 导致阴阳离子扩散能力增强、铝配离子更倾向以${\\rm{A}}{{\\rm{l}}_2}{\\rm{Cl}}_7^ -$

1.要点:(1)测导线转折角用测回法,量边用钢尺。 (2)瞄准目标时,应尽量瞄准测钎的底部。 2.流程:由A角→B角→C角D角,再丈量各边长

Part L Reading comprehension (40% Directions: There are some tasks for you to fulfill. You should read the materials carefully and do the tasks as you are instructed Task 1 (10%) Directions: After reading the following passage, you will find 5 questions or unfinished statements. For each question or statement there are 4 choices marked a)

Part I Reading(40%) Every human being, no matter what he is doing, gives off body heat. The usual problem is how to dispose of it. but the designers of the Johnstown Campus of the University o Pittsburgh set themselves the opposite problem how to collect body heat. They have designed a collection system which utilizes not only body heat, but the heat given off by such

一、试验目的及任务 l、掌握传热膜系数α及传热系数K的测定方法。 2、通过实验掌握确定传热膜系数准数关联式中的系数A和指数m、n的方法。 3、掌握测温热电偶的使用方法

令R代表所有m个实数x=(x2,…,x)组成的空 间,x也称为Rm的点.x(i=1,2,…,m)称为x点的坐 标.在R的任两点x与y之间可以引进一度量 |x-y={(x-y)2+…+(xm-ym)2,(111) 称为欧氏度量.于是可由此定义Rm的一拓扑 设V是R中的开集,映照fV→把V映入R的 一子集.设x∈V映为∈V,表示为 x→=f(x) 于是x的坐标x与x的坐标x(a=1,…,n)之间有一函 数关系:

决策要有一定的价值标准(或称为价值函数),在技术经济分析中,价值函数常用经济 效益表示,一般称为损益值。损益值(R)大小取决于决策对象所处的自然状态(S)和决 策者提出的策略方案(),即R=f(A,S) 根据对未来自然状态的把握程度不同,决策问题分为确定型决策、风险型决策和不确 定型决策

前言 Introduction 菇菌掠影 A Glance of Macrofungi Illustrations 菇菌分类目录 1-21 Catalogue of Macrofungi 图鉴正文 1-250 Text of the lllustrations 菇菌基础知识 251-278 Elementary Knowledge of Macrofungi 菇菌名称拉汉对照 279-290 Latin-Chinese names of Macrofungi 主要参考文献 291 References