是由病毒引起的主要侵害鸡、火鸡的急性高度接触性传染病，其它禽类、人偶尔亦可感染本病毒。 概述 病原 流行病学特点 临床症状 病理变化 诊断 防制

ntil the second half of the twentieth century, the structure of a substance-a newly discovered natural product, for example-was determined using information obtained from chemical reactions. This information included the identification of functional groups by chemical tests, along with the results of experiments in which the substance was broken down into smaller, more readily identifiable fragments. Typical of this approach is the demonstration of the presence of a double bond in an alkene by cat- nd subsequent

Where Are We in the Course? We are studying the 1st of the three blocks of microeconomics: Consumer behavior, production theory, and market equilibrium Within the 1st block, we are working on the 2nd of the three components: choice set, preference, and consumer demand

What is Object-Oriented? Object orientation is an approach to software development that organizes both the problem ane nd its solution as a collection of discrete objects

Chapter 8 Network Management Computer Networking A Top Down Approach Featuring the Internet, The power Point slides are based on the 2nd edition Jim Kurose, Keith Ross

Chapter 7 Network Security Computer Networking A Top Down Approach Featuring the Internet, The power Point slides are based on the 2nd edition material provided by Jim Kurose, Keith Ross Lf Kurose and K.w. ross Addison-Wesley, July

Chapter 5 Data Link Layer Computer Networking: A Top Down Approach Featuring the Internet The PowerPoint Slides are based on the material 2nd edition. provided by Jim Kurose, Keith Ross J.F Kurose and K.W. Ross

Chapter 2 Application Layer Computer Networking: A Top Down Approach The PowerPoint Slides are based on Featuring the Internet, 2nd edition. the material provided by Jim Kurose, Keith Ross .F Kurose and K.W. Ross. Addison-Wesley, July

MG!∈R- ORDER5)sT6As RREL丹T(0sHP5 BETWEEN1MER6soN5毛 TAST∈P兵 ND THE POLE LOCAT(0NS心EK ALCULATE0 FoR A SECOND-ORDER SYSTEM GuES60工 NSIGHTS AcTuALLy Gooo APPRoXIMATIONS foR MAwy HIGHER- ORDER SYSTEMS BECAUSE THEIR

Difficult Person Hostile-aggressie Bullies, cverwhelms, and intimidates cthers nd up to the hostile ade frot atoers-can t accept feedback on t rush into the worst thing that coul happen?)