The Purpose of this Chapter To begin to understand the art of building an economic model To begin to understand three basic elements of modeling in economics: –Purpose –Simplification through assumptions –Value judgment

Direction : In this part you are going to hear a passage about how one can achieve success. Listen carefully and fill in the blankswith the missing words. No one sets out in life to fail. The reality is that many do. Why do some prosper while others struggle just to exist? There is no simple answer to that question but here are a few thoughts that might shed some light onto this very complex issue

外研版（三起）（2012）小学英语六年级下册Module 9 Unit 1 Best wishes to you!Module 9 Unit 1 Best wishes to you!习题(2)

外研版（三起）（2012）小学英语六年级下册Module 2 Unit 1 When are we going to eat$%Module 2 Unit 1 When are we going to eat$%课件(5)

The purpose ofthis chapter is to review various forms of solids dryers and auxiliary components. It is intended to be a practical guide to dryer selection (as opposed to the theory of drying, which is addressed in various technical manuals referenced in the bibliography). From a microscopic

外研版（三起）（2012）小学英语六年级下册Module 2 Unit 1 When are we going to eat$%Module 2 Unit 1 When are we going to eat$%课件(3)

Classification Primary: carbon with -OH is bonded to one other carbon. Secondary: carbon with-OH is bonded to two other carbons. · Tertiary: carbon with-OH is bonded to three other carbons. Aromatic(phenol): -OH is bonded to a benzene ring

Types of Alcohol Reactions HH H Dehydration to alkene ·xidation to aldehyde, ketone Substitution to form alkyl halide Reduction to alkane ·Esterification ·Tosylation Williamson synthesis of ether

Muscles Active while Lengthening Consider the example of ordinary exercise, lets say one of the running events in the Olympics. Muscle functions to stop the motion of the athlete as often as it does to start it. When a load larger than isometric tetanus tension To is applied to a muscle in a tetanic state of activation, the muscle lengthens at a constant

相律 Phase Rules Phase diagrams are extremely useful for systems with multiple components, and serve to describe physical and chemical equilibria over range of different compositions, as well as points where substances are mutually miscible, or even when a system has to be brought to a specific set of conditions for equilbrium to exist(e.g., pressure