随着电子技术的迅猛发展,电视机不断降价,某种品牌

最主要的直接原因有三个原因,第一是美国争取到生存空间和政局稳定以后,对于蒸汽工业涉足不深,而此时正好赶上第二次工业革命,所以没有历史包袱虽然第二次工业革命在美国开始的较晚但完成的最迅速.而两个科学巨匠

二十一世纪是信息化的世纪,尤其是信息技术的迅猛发展将对我国的企业产生重大的影响.The21stcentutyisacenturyfeaturesinformationizationparticular

Withmodernscienceandtechnologyandtherapiddevelopmentofthestrengtheningofeconomicglobalization,e-comm

----中小企业的迅猛发展已成为我国经济发展的强劲动力之一,随着我国加入WTO及市场竞争的进一步加剧,中小企业的发展面临着前所未有的困难.TherapiddevelopmentofSMEsinChin

Abstract:Withtherapiddevelopmentofcomputertechnology,especiallytherapiddevelopmentofnetworktechnolog

1.HotelserviceisawindowofsocialcivilizationWiththefastdevelopmentofsocialeconomyandpeople'slivinglev

abstractWiththerapiddevelopmentofinternettechnology,itisimperativetoachievethediversifyingenterprise

基本上没什么太大的问题

Alongwithreformandopenpolicythorough,theeconomicalswiftandviolentdevelopment,properlysolvesthecityim

Withthedevelopmentofthesocialistmarketeconomy,theeconomicgrowthatthesametime,China'seconomicstructur

Byeconomicdevelopmentisgettingrapidly,inourcountrythequantityofvehiclesisgrowingdaily.Inparticular,p

Abstract:Alongwiththedevelopmentofeconomicglobalization,especiallymovie,entertainment,theInternetand

Theinternationalintercourseandcooperationisexpandingconstantlywiththeincessantdepthofthereformandope

Associetyprogresses,therapiddevelopmentofscienceandtechnology,ourlivingenvironmenthasalsoundergoneas

Alongwithreformandopenpolicythorough,theeconomicalswiftandviolentdevelopment,properlysolvesthecityim

Atpresent,agriculture,industry,life,militaryandotheraspectstotheautomaticandintelligent,digitalizati

Withtheeraoftherapiddevelopmentofscienceandtechnology,microelectronicsandcomputerandothermodernelect

Withtherapiddevelopmentofmodernscienceandtechnology,thestrengtheningofglobaleconomicintegration,thew

Atpresent,alongwiththecommunicationindustryswiftandviolentdevelopment,thehandsettookimportantconstit

设原价是x元则(x-a)×(1-20%)=bx-a=b/0.8=1.25bx=a+1.25b答：原价是a+1.25b元C是AB中点所以BC=1/2AB同理,BD=1/2BC=1/4AB所以AD=1/2