人教版初三数学圆的测试题及答案范文

作为一名测量人员，xx认真履行岗位职责，紧密配合施工，制定切实可行的的测量放线方案。保罗回忆自己年少时癿经历，丌断怃耂生命、医疗、道德不哲学乊间癿兰系，丌仅为从医考提供了新规觇，使他们对自己癿职业呾使命有更为深入癿怃耂，耄丏为读考引路，觑人们更勇敢、沉着地看待生命、死亜不未来。situation,causingthelivelihoodof100tailingsprojectmanagementprojectandSouthMiningTechnologyintwoengineeringworklag.Correctivemeasures:(LEDLeadership:LuoMingjun,rectificationtime:beforeSeptember25th,insistforalongtime)1,strictlyabidebytheparty'spoliticaldiscipline.Strictlyabidebytheconstitution,theprincipleofPartyorganizationandpartypoliticallifestandards,donotspreadagainsttheparty'stheoryandpolicyadvice,notcontrarytopublishedThecentralandprovincialPartycommitteedecidedtotalk,nottodivulgethesecretsofthepartyandthestate,donotmakenoillegalorganizationandparticipateinvariousactivities,political,spreadrumorsandfalseinformation,nottopublishlossyunityofspeech,donotdamagetheunityofthings,andneverallowindividualsabovetheorganization.2,adheretothescientificanddemocraticdecision-makingthedecisiontomakedecisions.Correctlyhandletoensurethatgovernmentdecreesandbasedontheactualcreativework,givingfullplaytosubjectiveinitiative,putanendtoimplementtheconferencemeeting,todocumenttheimplementationofdocumentsandsoon.Toimprovethescientificanddemocraticdecision-makingmechanism,improveandimplementthedecisiontosolicitopinions,experts,publichearingsandotherhealthsystem.Allmajordecisionsbeforetheriskassessmentmechanismandlegitimacyreviewmechanism.Adheretotheinterestsofthemassesandtheintentionreflectedinthepolicymakingprocessandcarryoutthework,notactingontheirbehalf,acrosstheboardandcoercion.(two)theexistenceofnegativecommunicationorunwillingtocommunicationproblemsduetomaintenancepartyteamunity.Theteammembersofthedivisionofresponsibilities,temperament,interestsDifferencesindemand,oftenleadstodifferentviews,differentopinions.Individualmembersoforganizationandcoordinationability,teamspiritisnotgood,workstyleisnotreal,simpleworkingmethods,lackofknowledgeofthewisdomofthepeople,forgivenessandartforthepeople,cannotdealwithdifferentopinions,thereareselfsweepthesnowinfrontofthedoor,allkindsofresponsibilityfields.Somemembersoftheteamdivisionofworkcoordination,lackofcoordination,asextremeliberalization,didnotformaworkforce.Inaddition,individualcadreslackofleadershiptraining,lovecommandcommunication,negativecommunication,talkintheworkdidnottaketheinitiativetotalknotcorrectThescienceteamdifferences,resolveconflicts.Correctivemeasures:(LEDLeadership:LuoMingjun,rectificationtime:beforeSeptember25th,insistforalongtime)1,tofurtherstrengthentheeducationandguidanceontheimplementationofthecentraleightprovisions,theprovincialnineprovisionsofthecountycommitteeofthetenprovisionsextensivepublicity,eliminatetheideologicalBCDAO九年级圆测试题一、选择题（每题3分，共30分）1．如图，直角三角形ABC中，∠C＝90°，AC＝2，AB＝4，分别以AC、BC为直径作半圆，则图中阴影的面积为（）A2π－3B4π－43C5π－4D2π－232．半径相等的圆内接正三角形、正方形、正六边形的边长之比为（）A1∶2∶3B1∶2∶3C3∶2∶1D3∶2∶13．在直角坐标系中,以O(0，0)为圆心,以5为半径画圆,则点A(3,4)的位置在（）A⊙O内B⊙O上C⊙O外D不能确定4．如图，两个等圆⊙O和⊙O′外切，过O作⊙O′的两条切线OA、OB，A、B是切点，则∠AOB等于（）A.30°B.45°C.60°D.90°5．在Rt△ABC中，已知AB＝6，AC＝8，∠A＝90°，如果把此直角三角形绕直线AC旋转一周得到一个圆锥，其表面积为S1；把此直角三角形绕直线AB旋转一周得到另一个圆锥，其表面积为S2，那么S1∶S2等于（）A2∶3B3∶4C4∶9D5∶126．若圆锥的底面半径为3，母线长为5，则它的侧面展开图的圆心角等于（）A．108°B．144°C．180°D．216°7．已知两圆的圆心距d=3cm，两圆的半径分别为方程0352xx的两根，则两圆的位置关系是（）A相交B相离C相切D内含8．四边形中，有内切圆的是（）A平行四边形B菱形C矩形D以上答案都不对9．如图，以等腰三角形的腰为直径作圆，交底边于D，连结AD，那么()A∠BAD+∠CAD=90°B∠BAD∠CADC∠BAD=∠CADD∠BAD∠CAD10．下面命题中，是真命题的有（）①平分弦的直径垂直于弦；②如果两个三角形的周长之比为3∶2，则其面积之比为3∶4；③圆的半径垂直于这个圆的切线；④在同一圆中，等弧所对的圆心角相等；⑤过三点有且只有一个圆。OO'AB第4题图作为一名测量人员，xx认真履行岗位职责，紧密配合施工，制定切实可行的的测量放线方案。保罗回忆自己年少时癿经历，丌断怃耂生命、医疗、道德不哲学乊间癿兰系，丌仅为从医考提供了新规觇，使他们对自己癿职业呾使命有更为深入癿怃耂，耄丏为读考引路，觑人们更勇敢、沉着地看待生命、死亜不未来。situation,causingthelivelihoodof100tailingsprojectmanagementprojectandSouthMiningTechnologyintwoengineeringworklag.Correctivemeasures:(LEDLeadership:LuoMingjun,rectificationtime:beforeSeptember25th,insistforalongtime)1,strictlyabidebytheparty'spoliticaldiscipline.Strictlyabidebytheconstitution,theprincipleofPartyorganizationandpartypoliticallifestandards,donotspreadagainsttheparty'stheoryandpolicyadvice,notcontrarytopublishedThecentralandprovincialPartycommitteedecidedtotalk,nottodivulgethesecretsofthepartyandthestate,donotmakenoillegalorganizationandparticipateinvariousactivities,political,spreadrumorsandfalseinformation,nottopublishlossyunityofspeech,donotdamagetheunityofthings,andneverallowindividualsabovetheorganization.2,adheretothescientificanddemocraticdecision-makingthedecisiontomakedecisions.Correctlyhandletoensurethatgovernmentdecreesandbasedontheactualcreativework,givingfullplaytosubjectiveinitiative,putanendtoimplementtheconferencemeeting,todocumenttheimplementationofdocumentsandsoon.Toimprovethescientificanddemocraticdecision-makingmechanism,improveandimplementthedecisiontosolicitopinions,experts,publichearingsandotherhealthsystem.Allmajordecisionsbeforetheriskassessmentmechanismandlegitimacyreviewmechanism.Adheretotheinterestsofthemassesandtheintentionreflectedinthepolicymakingprocessandcarryoutthework,notactingontheirbehalf,acrosstheboardandcoercion.(two)theexistenceofnegativecommunicationorunwillingtocom