6-1.自动测试系统主要由哪些部分组成？各部分的作用是什么？ 6-2.在设计计算机测试系统时，选择模拟多路开关要考虑的主要因素是什么？

1. 什么是误差，相对误差和绝对误差如何定义。 2. 简要说明误差的来源。 3. 简要说明系统误差的分类，如何消除。 4. 简要说明随机误差的分布，如何消除

Composition, functions and structure types of the drive axle ； Final drive ：single reduction final drive、double reduction final drive、hub reduction gear、 two￾speed final gear 、thru-drive(贯通式主减). Differential ：gear differential、 antiskid differential and so on. Axle shaft and axle case：Support and structure of axle shaft、Classification of axle case、 design feature

It should provide drivers with good operating condition and comfort working environment; It should isolate vibration, noise, waste gas and harsh climate and provide passengers with comfort riding environment; It should keep the completeness of cargo and make them easy to load and unload; The structure of body and its equipment should ensure the safety of driving and reduce the influence of an incident. The reasonable outer shape of body can effectively steer the surrounding current and should improve the dynamic characteristics, fuel economy and driving stability. It should also improve the cooling condition of engine and ventilation inside the cab

Function of frame、Requirements of its structure、 Classification； Structural characteristics of fringe-beam frame(边 梁式）； Structural characteristics of backbone type frame （中梁式） ； Structural characteristics of comprehensive type frame； Structural characteristics of Monocoque Body

9.1 Engine Start Overview 发动机起动概述 9.2 Start Assist Device 起动辅助装置 9.3 Starting Motor 起动机 9.4 Over-speed Protector 超速保护装置 9.5 Decelerating Starter 减速起动机

8.1 Function and components of lubrication system 润滑系统的功用与组成 8.2 Lubricants 润滑剂 8.3 Oil pumps 机油泵 8.4 Oil filters 机油滤清器 8.5 Heat transmitters (Oil cooler) 机油冷却器

2-1.信号一般有哪几种分类方法？各分为哪几类？请简要说明。 2-2.请简述信号的几种描述方法。 2-3.写出周期信号两种展开式的数学表达式，并说明系数的物理意义

一、发动机点火系 按照发动机的工作顺序使火花塞产生电火花点燃气缸内混合气的装置。 二、电火花的产生原因 三、击穿电压 四、点火系类型 蓄电池点火系、磁电机点火系、晶体管点火系

1、概述: 了解转向系的功用、组成及转向要求;了解掌握转向传动比的概念 2、转向器 了解方向盘的结构及转向轴安全措施。掌握循环式转向器和齿轮齿条式 转向器的结构特点和调整方法