▪ 系统开发的系统开发策略与开发计划 • 接收式的开发策略 • 直接式的开发策略 • 迭代式的开发策略 • 实验式的开发策略 （要求掌握各种方法的基 本细想，实施步骤，优缺点和适用范围） ▪ 1.生命周期法（Life Cycle Approach ） ▪ 2.原型法（Prototyping Approach） ▪ 3.面向对象法（ Object-Oriented Approach）

Notes LECTURE Biochemistry 9.17.04 ATP is both a unit of energy currency in a cell and a building block of RNA. Why? It is believed that early in evolution there were very few molecules around. Many key pathways are ancient, and trace their origin to the early stages of evolution of life on Earth. Incidentally, such pathways are usually highly conserved in modern organisms. This is probably because once

Why do you believe that 3+3=6? Is it because your second-grade teacher, Miss Dalrymple, told you so? She might have been lying, you know Or are you trusting life experience? If you have three coconuts and someone gives you three more coconuts, then you have--ahal--six coconuts. But if that is the true basis for your belief, then why do you also believe that

Types of options A call is an option to buy A put is an option to sell A European option can be exercised only at the end of its life An American option can be exercised at any time

Chapter 1 Introduction to the cell Learning Objectives 1. About Cell Biology 2. Look briefly at the history of cell theory; 3. Consider the basic properties of cells; 4. Compare some characteristics of two different classes of cells: prokaryotes and eukaryotes; 5.comprehend a special life: viruses

New Words dedicate:give, devote(one's time, energy, life, etc. to a noble cause or purpose If you dedicate yourself to something you decide to give a lot of time and effort to it because you think it is important

Chilled food technology has had a very significant impact on the types of food eaten by consumers during the 1980s and 1990s. This method of food preservation has satisfied the desires of people for safe, reliable, fresh products providing convenience despite the limited shelf-life. This introduction reviews the definition, range and market size of chilled food and indicates trends for the L1 Definition Foods distributed under refrigeration and sold from refrigerator cabinets have been available for many years. Although there were many new chilled product

Biscuits are small baked products made principally from flour, sugar and fat. They typically have a moisture content of less than 4% and when packaged in moistureproof containers have a long shelf life, perhaps six months or more. The appeal to consumers is determine by the appearance and eating qualities. For example, consumers do not like broken biscuits nor ones that have been over or under baked

Chapter 1.a Fable for Tomorrow There was once a town in the heart of america where all life seemed to live in harmony with its surroundings The town lay in the midst of a checkerboard of prosperous farms, with fields of grains and hillsides of orchards where in spring white clouds of bloom drifted

Surface quality is another aspect of machining accuracy. It consists of the surface finish and the physic mechanical state of the surface layer. It affects the proper functioning and service life of the parts Surface Finish Machining accuracy is expressed quantitatively in machining error. Surface finish is expressed quantitatively in surface roughness. The surface roughness on a machined workpiece surface is caused primarily by the geometrical factors(cutting tool geometry and cutting