1、复数的代数式:F=a+jbj=√-1 2、复数的矢量表示 3、复数的三角式:

一、叠加定理的导出：以右图为例 (a)中独立源us1、i

网络函数.电路在单一的独立激励下 其零状态r(t)响应的象函数与激励e(t)的象 数之比

例1求以下函数的象函数 (1)单位阶跃函数 (2)单位冲击函数 (3)指数函数

电阻电路：构成电路的无源元件均为线性电阻，称为线性电阻电路，简称电阻电路

一、圆盘旋光仪的构造 二、旋光仪主要由起偏振

Part I Warming up Part II What Makes a Good orBad student? Part III Some Facts aboutEnglish Part IV Language Study and LanguageAppreciation

Unit 1 Education is a Key Part I Warming up Part II Educational System Part III Remarks on ModernEducation Part IV Short Talks on ListeningSkills

Part I Warming Up Part II Painting for Pay Part III Choosing a Career Part IV Short Talks on Listening Skills

Direction: You will hear the dates of birth and the dates of death of ten world famous composers. Listen carefully. Fill in the blanks with the dates you hear. Write as rapidly as you can. You may use short forms for the months