搜索
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,chemicalsandtextileYibincity,arethethreecorepillarsoftheindustry.In2014,thewuliangyebrandvalueto73.58billionyuan,thecity'sliquorindustrysliptostabilise.Promotingdeepdevelopmentofintegratedenergy,advancedequipmentmanufacturingindustry,changningdistrict,shalegasproductioncapacityreached277millioncubicmetres,builtthecountry'sfirstindependenthigh-yieldwellsandpipelinesinthefirstsection,theleadinfactoryproductionandsupplytothepopulation.2.1-3GDPgrowthfigure2.1-4Yibin,Yibincity,Yibincity,fiscalrevenuegrowth2.1.4topographyterrainoverallisSouthwest,North-EasternState.Lowmountainsandhillsinthecitylandscapeasthemainridge-and-Valley,pingbasmallfragmentednaturepictureforwaterandthesecondlandofthesevenhills.236metersto2000metersabovesealevelinthecity,lowmountain,46.6%hills45.3%,pingbaonly8.1%.2.1.5developmentofYibinlandscapesanddistinctivefeatureinthecenterofthecity,withlimitations,andspatialstructureoftypicalzonalgroup,2012-citiesinbuildingwithanareaofabout76.2km2.Fromcity-buildingsituation,oldtown-theSouthBankCenterconstructionislaggingbehind,disintegrationoftheoldcityisslow,optimizationandupgrading,qualitypublicserviceresourcesarestillheavilyconcentratedintheoldtowntogether.SouthbankCentrehasnotbeenformed,functionsoftheserviceareaspaceismissing.Meanwhile,peripheralgroupcentresservicewasweakandinadequateaccountingforcitydevelopment,suspiciouspatterncouldnotbeformed.Asregardstransport,withtheoutwardexpansionofcities,citieshavebeenexpanding,centripetalcitytrafficorganizationhasnotchanged,integratedenergy,chemicalsandtextileYibincity,arethethreecorepillarsoftheindustry.In2014,thewuliangyebrandvalueto73.58billionyuan,thecity'sliquorindustrysliptostabilise.Promotingdeepdevelopmentofintegratedenergy,advancedequipmentmanufacturingindustry,changningdistrict,shalegasproductioncapacityreached277millioncubicmetres,builtthecountry'sfirstindependenthigh-yieldwellsandpipelinesinthefirstsection,theleadinfactoryproductionandsupplytothepopulation.2.1-3GDPgrowthfigure2.1-4Yibin,Yibincity,Yibincity,fiscalrevenuegrowth2.1.4topographyterrainoverallisSouthwest,North-EasternState.Lowmountainsandhillsinthecitylandscapeasthemainridge-and-Valley,pingbasmallfragmentednaturepictureforwaterandthesecondlandofthesevenhills.236metersto2000metersabovesealevelinthecity,lowmountain,46.6%hills45.3%,pingbaonly8.1%.2.1.5developmentofYibinlandscapesanddistinctivefeatureinthecenterofthecity,withlimitations,andspatialstructureoftypicalzonalgroup,2012-citiesinbuildingwithanareaofabout76.2km2.Fromcity-buildingsituation,oldtown-theSouthBankCenterconstructionislaggingbehind,disintegrationoftheoldcityisslow,optimizationandupgrading,qualitypublicserviceresourcesarestillheavilyconcentratedintheoldtowntogether.SouthbankCentrehasnotbeenformed,functionsoftheserviceareaspaceismissing.Meanwhile,peripheralgroupcentresservicewasweakandinadequateaccountingforcitydevelopment,suspiciouspatterncouldnotbeformed.Asregardstransport,withtheoutwardexpansionofcities,citieshavebeenexpanding,centripetalcitytrafficorganizationhasnotchanged,电子技术基础考证试题选A晶体管1．半导体整流电源中使用的整流二极管应选用（D）。A：变容二极管B：稳压二极管C：点接触型二极管D：面接触型二极管2．开关三极管正常的工作状态是（D）。A：截止B：放大C：饱和D：截止或饱和3、一个硅二极管反向击穿电压为150伏，则其最高反向工作电压为（C）。（A）大于150伏（B）略小于150伏（C）不得超过40伏（D）等于75伏4、用于整流的二极管型号是（C）A：2AP9B：2CW14CC：2CZ52BD：2CK84A5.二极管两端加上正向电压时（B）。(A)一定导通(B)超过死区电压才导通(C)超过0.3V才导通(D)超过0.7V才导通B基本放大电路1、放大电路的静态工作点，是指输入信号(A)三极管的工作点。(A)为零时(B)为正时(C)为负时(D)很小时2．放大电路设置静态工作点的目的是（B）。A、提高放大能力B、避免非线性失真C、获得合适的输入电阻和输出电阻D、使放大器工作稳定3．将一个具有反馈的放大器的输出端短路，即三极管输出电压为零，反馈信号消失，则该放大器采用的反馈是(C)A．正反馈B负反馈C．电压反馈D．电流反馈4．共发射极放大电路如图所示，现在处于饱和状态，欲恢复放大状态，通常采用的方法是(A)。A：增大RBRBRCUGBB：减小RBC：减小RcD：改变UGB5．欲改善放大电路的性能，常采用的反馈类型是（D）。A．电流反馈B电压反馈C．正反馈D．负反馈6、欲使放大器净输入信号削弱，应采取的反馈类型是(D)。(A)串联反馈(B)并联反馈(C)正反馈(D)负反馈7.阻容耦合多级放大器中，(A)的说法是错误的。A：放大直流信号B：放大缓慢变化的信号C：便于集成化D：各级静态工作点互不影响8．阻容耦合多级放大器可放大(B)。(A)直流信号(B)交流信号(C)交、直流信号(D)反馈信号9．阻容耦合多级放大电路的输入电阻等于（D）。A、第一级输入电阻B、各级输入电阻之和C、各级输入电阻之积D、末级输入电阻10．多级放大电路总放大倍数是各级放大倍数的(C)。A：和B：差C：积D：商11．对功率放大电路最基本的要求是(C)。(A)输出信号电压大(B)输出信号电流大(C)输出信号电压和电流均大(D)输出信号电压大、电流小12.乙类推挽功率放大器易产生的失真是（C）。A．饱和失真B．截止失真C．交越失真D．无法确定13．推挽功率放大电路比单管甲类功率放大电路（C）。A．输出电压高B．输出电流大C．效率高D．效率低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,chemicalsandtextileYibincity,arethethreecorepillarsoftheindustry.In2014,thewuliangyebrandvalueto73.58billionyuan,thecity'sliquorindustrysliptostabilise.Promotingdeepdevelopmentofintegratedenergy,advancedequipmentmanufacturingindustry,changningdistrict,shalegasproductioncapacityreached277millioncubicmetres,builtthecountry'sfirstindependenthigh-yieldwellsandpipelinesinthefirstsection,theleadinfactoryproductionandsupplytothepopulation.2.1-3GDPgrowthfigure2.1-4Yibin,Yibincity,Yibincity,fiscalrevenuegrowth2.1.4topographyterrainoverallisSouthwest,North-EasternState.Lowmountainsandhillsinthecitylandscapeasthem