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1、第一单元方程知识点:等式:表示相等关系的式子叫做等式。练习:1、下面的式子中,是等式的在后面()里画“√”。X+18=36()x+2﹥10()72-x()x=3()知识点:方程:含有未知数的等式是方程。练习:1、下面的式子中,是方程的在后面()里画“√”。X+18=36()x+2﹥10()72-x()x=3()知识点:方程与等式的关系:方程一定是等式,等式不一定是方程。练习:1、哪些是等式,哪些是方程,请填入相应的横线上。(填序号)①3+x=12②3.6+x③4+17.5=21.5④48+x﹤63等式________________________;方程:____________
2、____________2、含有未知数的式子叫方程。()【判断】3、等式都是方程。()【判断】4、方程都是等式。()【判断】知识点:等式的性质练习:1、解方程X-97=1451.15+x=6.813.5-x=8.23x=3.9技术官员村位于位于亚运城东部,主干道二以东石楼涌以西的地块,占地面积、m2,总建筑面积、m2,共包括地下室南区、地下室北区、地上部分1栋~12栋、服务中心、室外工程等多个单体工程。其中住宅面积m2,共12栋,1~7栋建筑层数为11层,8~12栋11层(局部复式顶层),首层局部架空,布置公建配套设施。integratedenergy,chemicalsandt
3、extileYibincity,arethethreecorepillarsoftheindustry.In2014,thewuliangyebrandvalueto73.58billionyuan,thecity'sliquorindustrysliptostabilise.Promotingdeepdevelopmentofintegratedenergy,advancedequipmentmanufacturingindustry,changningdistrict,shalegasproductioncapacityreached277millioncubicmetres
4、,builtthecountry'sfirstindependenthigh-yieldwellsandpipelinesinthefirstsection,theleadinfactoryproductionandsupplytothepopulation.2.1-3GDPgrowthfigure2.1-4Yibin,Yibincity,Yibincity,fiscalrevenuegrowth2.1.4topographyterrainoverallisSouthwest,North-EasternState.Lowmountainsandhillsinthecityland
5、scapeasthemainridge-and-Valley,pingbasmallfragmentednaturepicturefor"waterandthesecondlandofthesevenhills".236metersto2000metersabovesealevelinthecity,lowmountain,46.6%hills45.3%,pingbaonly8.1%.2.1.5developmentofYibinlandscapesanddistinctivefeatureinthecenterofthecity,withlimitations,andspati
6、alstructureoftypicalzonalgroup,2012-citiesinbuildingwithanareaofabout76.2km2.Fromcity-buildingsituation,"oldtown-theSouthBank"Centerconstructionislaggingbehind,disintegrationoftheoldcityisslow,optimizationandupgrading,qualitypublicserviceresourcesarestillheavilyconcentratedintheoldtowntogethe
7、r.SouthbankCentrehasnotbeenformed,functionsoftheserviceareaspaceismissing.Meanwhile,peripheralgroupcentresservicewasweakandinadequateaccountingforcitydevelopment,"suspicious"patterncouldnotbeformed.Asregardstransport,withtheoutwardexpansionof