简介:摘要: 知识是不能直接传授的,而是要通过学生的学与思考方能获得。“ U 型学习”呈现知识学习的还原与下沉、尝试与探究、反思与上浮三个过程,有利于学生进入沉浸式学习,有利于教师实施深度教学。
简介:摘要:锻压厂热处理的U型丝杆在生产过程中发现开裂现象。现对U型丝杆开裂原因进行理化综合分析,主要目的是查清U型丝杆开裂的原因,找出问题症结,及解决方法,以便在今后的生产中提高产品质量,防止类似事情再次发生。
简介:Wang:Wehavediscussedissuesconcerningtheinfluenceof"overthrowingSaddam"attheregionallevelanditstrend.Next,itisnecessaryforustogodeeperanddiscussitatthegloballevel.Itisveryclearthat"strikingIraq,""overthrowingSaddam,"and"transforming
简介:<正>AtthebeginningofJune,2012,IhadthehonortojoinaCAFIUteamtovisitCanadaandtheUnitedStates,whichwasmyfirstvisittothiscontinentacrosstheshiningocean.AsanEnglishmajor,IamnotastrangertotheAmericansociety,politicsandculture.Asagirlborninthe1980s,mypeersgrewupwithcartoon
简介:TheU.S.Presidentialcampaignin2004revealedaphenomenonofhigh"polarization"inAmericansociety,anditalsoexposedthesharpcompetitionbetweenthetwopoliticalforces--liberalandconservative.FinallymoreoftheconstituencyvotedforBush,henceMr.Bushwonre-election.ThishasnotonlychangedtheBushfamily'sfateof"winningawarbutlosingelection,"butalsohelpedBushcleanuphispsychologicalshadowofhis"presidency"decidedbytheSupremeCourtinthelastgeneralelection.Asa"wartimepresident,undoubtedlyBushwillbecomegreaterpoliticalconfidenceforhissecondterm.
简介:摘要本文报道了2例罕见且容易发生严重并发症的U型尖锐金属食管异物的病例,均于全身麻醉下行硬质食管镜检查术取出异物,但均出现气管食管瘘,处理后恢复正常;2例患儿随访1年均无异常。
简介:WhetherthereisaglobalstrategyintheU.S.ornotisstillanopenquestion.ManyAmericansinsistthatsincepresidentialelectiontakesplaceeveryfouryears,it’ssimplyimpossibleforanyPresidenttoworkoutaglobalstrategyinsuchashorttime.Judgedbytheimportantfactorssuchasstrategyenvironmentassessment,targetformulation,strategyconnotationexpansionandeffectevaluation,itis,infact,verydifficulttofindoutacountrywithamaturedforeign,local
简介:Sino-U.S.economicandtraderelationsaremovingintoaneraof"competitiveinterdependence".Aneconomicandtraderelationshipthatismutuallybeneficialandwin-wininessenceisfacingchallengesthatfeatureacompetitive,zero-sumgamewhichpursuesrelativegains.Mutualsuspicionisthepsychologicalrootofthezero-sumgamebetweenChinaandtheU.S.whilethecognitiverootoftheirmutualsuspicionisthesenseofuncertaintyandlackofself-confidenceaboutthefutureofitsownandtheotherside.