1. 了解氢在周期表中的位置； 2. 了解氢的存在和用途，掌握氢的主要工业和实验室制法； 3. 认识氢的三种同位素； 4. 掌握二元氢化物的分类及其特点； 5. 了解氢能源（发生、储存、利用）。 17.1 氢的同位素Isotopes of hydrogen 17.2 天然资源和工业制备方法 Natural recourses and industrial preparation methods 17.3 氢的性质 Properties of hydrogen 17.4 氢的用途 Uses of hydrogen 17.5 二元氢化合物的分类 Classification of binary hydride

Overview I. Introduction II. The Economics of Effective Management Identify Goals and Constraints Recognize the Role of Profits Understand Incentives Understand Markets Recognize the Time Value of Money Use Marginal Analysis

he term\biological diversity\entered the part of the broader set of criteria and indicators for public vocabulary only about 15 years ago, sustainable forest management but its arrival signalled a new and more Conserving biological diversity is an ethical comprehensive approach to conservation, bringing imperative because all life has a right to exist, and er information, knowledge, awareness, humans should not knowingly cause any loss of ethics, forestry, protected areas

Richard Posner wrote in 1986 that the law and economics movement is “perhaps the most important development in legal thought in the last quarter century.”0 Through its application of economic theories and methodologies to legal issues, this movement has revolutionized our understanding of many areas of common law and statutory regulation. Curiously, however

1. The constitution of the Netherlands does not contain provisions laying general principles of the economic system, nor are there any such provisions in other legislative instruments. It is fair to say the principle of the market economy is so deeply enshrined in the Dutch Political Economy that it is thought of as totally

Definition of pregnancy Pregnancy is defined as the course of embryo and fetal growth and development in uterine It begain at the fertilization and end the delivery of the fetal and it's attachment

1. Summary: （全文） One of Hemingway's war and love stories, this novel takes place in Italy during World War I and is tied closely to the author's own experience as an American Ambulance Driver for the Italian Army. The story opens during a lull （暂停）in the action and the reader meets a group of men who work with the wounded during battle. In the course of waiting for action, the protagonist, Henry, meets and courts（求爱） an English nurse stationed in Italy

Landscape architecture a profession only a little over a century old: an art as old as buman existence Norman Newton Design on the land. 1971 T he art of landscape architecture predates the Despite its well-documented his profession by thousands of years. Ancient cultures veneral. tory, landscape architecture isn ed the garden as one of the highest achievements of a civi an easy profession to define

一．Mechanisms of E1, E2, and E1cB 二．E2 Reaction 三．E1 Reactipn 四．Competition of E2/E1, E/S 五．E1cB Reaction 一．Mechanisms of E1, E2, and E1cB 二．E2 Reaction 三．E1 Reactipn 四．Competition of E2/E1, E/S 五．E1cB Reaction 六．Other Elimination Reactions Reactivity Regeoselectivity Stereochemistry

1.1 Biology is the science of life. Properties of Life. Biology is the science that studies living organisms and how they interact with one another and their environment