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

目的：掌握零件互换性的基本概念； 了解机械精度设计的原则方法

1、了解有关尺寸链、封闭环、组成环等的基本概念 2、掌握极值法解算尺寸链

1. to know the operation and advances of WDM and optical network Teaching 2. to understand the main idea and organization of the text; Objectives 3.to master some important new words, phrases and their

I. Revision mins com Teacher uses the following exercise to help the students to revise the important expressions or phrases

1. to know Cellular Mobile Telephone System Teaching 2. to understand the construction of cellular mobile telephone system Objectives

Word13 multimedia[. mAl i''midjn.多媒体 describe[dis k]v.描述,形容 mixture['m tfan.混合,混合物 consequent['kon wan]a.作为结果的,随之发生的

NEW WORDS AND PHRASES vISIonary[ vita n ari]n.幻想家,梦想家 contribute [kan tribju]v.捐献,贡献 kan]adv.重大的,效果显著的,具有特殊意义的

一、会计凭证的意义 会计凭证是记录经济业务、明确经济责任的书面证明，是登记帐簿的依据

第一节 会计处理基础 会计处理基础亦称会计核算基础，它是指确认收入和费用归属期间的标准