These notes essentially tie up a few loose ends in Lecture 8; in particular, I exhibit examples of inefficiencies in first- and second-price auctions. I would also like to briefly comment on Questions 1 and 2 in Problem Set 2

外研版（三起）（2012）小学英语六年级下册Module 7 Unit 1 He spent about twenty-one hours in space.Module 7 Unit 1 He spent about twenty-one hours in space.教案(2)

The length of a sound is the length of time during which it is held on continuously in a given word or phrase. The principal facts concerning length in English are given in the following rules: 203. Length of vowels 1. English vowels /i:/, /a: / /:/, /u:/, /a: /are longer than the other English vowels in similar context, i.e., when surrounded by the same sounds, and pronounced with the same degree of stress. Thus

They account for 50% of consultations with general practitioners for acute illness in young children and one-third of consultations in older children Respiratory illness leads to 20-35% of acute paediatric admissions to hospital They are the fifth most common cause of death in children ages between one and 14 years in the UK

accelerations account for non-central forces(drag, thrust, etc. X-axis in zenith, y-axis in frames velocity, and z-axis in transverse directions 8 Free orbit solution where 'A and 'B' are lengths and'a andB are phase angles

Microbial Ecology: Microorganisms in soil, water, and other environments and how microorganisms act to chemically change their environments. Microbial ecologists study: the biodiversity of microorganisms in nature and how different guilds interact in microbial communities The activities of microorganisms in nature and monitor their effects on ecosystems

外研版（三起）（2012）小学英语六年级下册Module 7 Unit 1 He spent about twenty-one hours in space.Module 7 Unit 1 He spent about twenty-one hours in space.导学案

外研版（三起）（2012）小学英语六年级下册Module 7 Unit 1 He spent about twenty-one hours in space.Module 7 Unit 1 He spent about twenty-one hours in space.习题(1)

Methods in Microbial Ecology Microbial ecology focus on two major issues: (1) biodiversity, including the isolation, identification, and quantification of microorganisms in various habitats, and (2) microbial activity, that is, what are microorganisms doing in their habitats. We begin here with a consideration of assessing biodiversity through enrichment and isolation, and then consider nonculture methods of identification

§5-1 引言 ( Introduction) §5-2 纯弯曲时的正应力 (Normal stresses in pure beams ) §5-3 横力弯曲时的正应力(Normal stresses in transverse bending ) §5-4 梁的切应力及强度条件 (Shear stresses in beams and strength condition) §5-5 提高梁强度的主要措施（Measures to strengthen the strength of beams)