第一章概述 1计算机系统和系统结构 一、计算机系统的组成 由硬件和软件组成。 1.硬件:可视为多种资源: （1)处理信息资源CPU; （2)存储信息资源—存储器; （3)交换信息资源I/O设备。 2.软件:即程序 （1)系统软件:各用户共同使用,如操作系统(OS),编译/解释程序,汇编程序,诊断程序等 （2)应用软件:为解决用户问题编写的程序

Countryside Part I Listening and Speaking Activities. Part l Reading comprehension and language Activities Part l Extended activities

9.1 Critique of existing procedures (i) Auctions. The problem with auctions is that assets sold off piecemeal may be sold at a substantial discount The financing problem. It takes too long to raise money from a large number of investors. A small number of investors may be risk averse and unwilling to pay the expected value of the assets

斯蒂芬·P·罗宾斯《管理学》笔记 第I篇绪论 第一章管理者与组织导论 一、谁是管理者 (1)管理者:组织中指挥他人活动的人,他们拥有各种头衔。 (2)操作者:非管理人员,他们直接从事某项工作或任务,不具有监督别人工作的责任

Part I Listening and Speaking Activities Introduction of functions Listen and speak Try to speak more Make your own dialogue What are they for?

Part I Listening and Speaking Activities Introduction of functions Listen and speak Try to speak more Make your own dialogue What are they for? If you want to learn more

3.1 核外电子的运动状态 一、 玻尔的原子结构理论 二、 电子的玻粒二象性 三、 玻函数与原子轨道 四、 概率密度和电子云图形 五、 四个量子数 3.2 核外电子的排布和元素周期律 一、多电子原子的能级 二、核外电子的排布的原则 三、原子的电子层结构和元素周期系 3.3 元素性质的周期性 一、有效核电荷(Z*) 二、原子半径(r) 三、电离能(I) 四、电子亲和能(Y) 五、电负性(x) 六、元素的金属性和非金属性 七、元素的氧化值

1.檐沟外排水(水落管外排水)(小型屋面) 雨水→屋面→檐沟→水落管一散水坡→地面檐沟→铅皮、预制砼 水落管→白铁皮、铸铁管。d=75~100mm,间距8~16m 2天沟外排水:利用屋面构造上所形成的天沟本身容量和坡度排泄雨水(大型屋面) 雨水→屋面一天沟→立管一地面或管道 天沟长度:40~50m,i=0.003

本节先介绍极限存在准则利用它们来导出两个重 要极限. 一、极限存在准则 准则I(夹逼定理)若Vx∈U(x,)(或|x>M), 均有g(x)≤f(x)≤h(x)且limg(x)=limh(x)=A, 则有limf(x)=A

Part I Listening Comprehension (20 minutes) Directions: In this section, you will hear ten short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A),),) and D),and decide which is the best answer. Then mark the corresponding letter on the Answer Sheet with a single line through the center