第一节 税收概念 第二节 税收要素和税收分类 第三节 税收原则 第四节 税负的转嫁与归宿

“The best things in life are free. . . ” Free goods provide a special challenge for economic analysis Most goods in our economy are allocated in markets… …for these goods, prices are the signals that guide the decisions of buyers and sellers

2.1 晶体结合的普遍描述 2.2 共价晶体 2.3 离子晶体 2.4 分子晶体、金属及氢键晶体 2.5 原子的负电性和晶体结合规律

The Law of Supply: uFirms are willing to produce and sell a greater quantity of a good when the price of the good is high. uThis results in a supply curve that slopes upward

The Meaning of Competition uA perfectly competitive market has the following characteristics: u There are many buyers and sellers in the market

Monopoly While a competitive firm is a price taker, a monopoly firm is a price maker

Imperfect Competition Imperfect competition refers to those market structures that fall between perfect competition and pure monopoly

Harcourt, Inc. items and derived items copyright © 2001 by Harcourt, Inc. The Four Types of Market Structure Monopoly Oligopoly Monopolistic Competition Perfect Competition

Factors of Production Factors of production are the inputs used to produce goods and services

3.1直流电动机的结构原理 3.2直流电动机的工作原理 3.3直流电动机特性分析 3.4直流电动机的控制技术