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

湖州师范学院：《癌症解析》课程教学资源（PPT课件讲稿，主讲：周国庆）

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

Words and Phrases Direction: you are going to hear some of track and field world records. Complete the Chart. Pay special attention to the country and the records. Events