1. to know the origin and development of Internet Teaching 2. to understand the main idea and organization of the text

1. to know the three basic processes of PCM: Sampling Quantizing Encoding Teaching 2. to understand that PCM is the heart of technology in communications in Objectives

1. to know current situation and the future in the telecommunication world Teaching 2. to understand the main idea and organization of the text

Lesson Number 14(Unit 14) Telecommunications Grade Teaching Mode Lecturing Content The Public Telecommunication Network Class hours 2 Periods 1. to know the concept, the four generic architectural components and the five classes of switching centers about the public telecommunication network

4.1基本体 4.2平面与立体相交 4.3几何体的尺寸标注

2.1投影法介绍 2.2正投影的基本性质 2.3三视图的形成及投影规律

第一节 概述 第二节 不良气象条件

一、生产性粉尘 二、粉尘特性 三、粉尘在机体内过程 四、生产性粉尘对健康的影响 五、生产性粉尘的控制和尘肺预防

一、凭证与帐簿设置 从记账凭证会计处理程序演变、发展而来; 显著特点是定期地编制记账凭证汇总表(亦称科目汇总表),并据此登记总分类账。也就是说科目汇总表成了登记总分类账的依据

一、会计处理程序特点 定期汇总编制汇总记账凭证,再据此登记总分类账