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在△ABC中，∠BAC=90°，AB=3，AC=4．AD平分∠BAC交BC于D，则BD的长为（　　）

问题详情：在△ABC中，∠BAC=90°，AB=3，AC=4．AD平分∠BAC交BC于D，则BD的长为（）【回答】A 知识点：勾股定理题型：选择题...
Internet ad造句

CowansaysshehopesoneofthosedonorswillanswerherInternetad.First,thesystemmustbeabletoreade-mailmessagesandautomaticallyextractandindexinformationsuchaspropernames,Internetaddresses,streetaddresses,phon...
local ad造句

Herlocaladmirersbeatapathtoherdoor.Bylaunchinglocal-languagewebsites,teamscantailormarketingtofitanindividualcountry,drumminguplocaladvertisingandsponsorshiprevenue.Wemustdevelopindustrieswithlocaladv...
reasonably ad造句

Thisarticleexaminesmainreasonstoleadtotheexcessinengineeringestimationduringengineeringconstruction,putsforwardswaytoreasonablyadjustengineeringestimationfromseveralaspects.Torealizepopulationandecono...
AD 2000造句

Forexample,theyearAD2000isequaltotheyear2543BE.DevelopAutoCAD2000withVB;ShowingFEMStresswithAutoCAD2000VBA...
如图，AC⊥BC，AD⊥BD，AD=BC，AD，BC交于O.求*：OC=OD.

问题详情：如图，AC⊥BC，AD⊥BD，AD=BC，AD，BC交于O.求*：OC=OD.【回答】知识点：三角形全等的判定题型：解答题...
ad造句

That'saninterestingad.aclassifiedad[advertisement]AnadvertisercancreateanAD.So,searchisonlyonepartoftheadmarket.Thoseadduptoaround25minutesofADtime.Anad-servingplatformthatanalyzesproduct-specificsho...
appropriately ad造句

WeseektoappropriatelyaddresstheseproblemstogetherwiththeUSthroughequalconsultationinaconstructivemanner.Withthedevelopmentofthenaturalgasindustry,theChinesegovernmentwillappropriatelyadjustitsnaturalg...
.如图,在△ABC中,AD是中线,求*:AD<(AB+AC).

问题详情：.如图,在△ABC中,AD是中线,求*:AD<(AB+AC).【回答】*:延长AD到点E,使DE=AD,连接BE,∴AE=2AD.∵AD是中线,∴BD=CD.在△ACD和△EBD中,∴△ADC≌△EDB(SAS),∴AC=BE.在△ABE中,∵AE<AB+BE,∴2AD<AB+AC,∴AD<(AB+...
classified ad造句

aclassifiedad[advertisement]Sitestodayoffermuchmorethanthetypicalprofilepictureanddescriptioninaclassifiedadlisting.Thesite'sclassifiedadsectionreadslikeabillionaire'syardsale:'Forsale--CaviarServe...
ad val造句

AdvaloremdutyoradvaloremtaxadvalorempropertytaxoilandgasproductionequipmentadvaloremtaxAcompoundtariffisacombinationofaspecificandanadvaloremtariff.Compounddutiesareacombinationofspecificandadvaloremd...
如图，AD⊥AE，AB⊥AC，AD＝AE，AB＝AC.求*：△ABD≌△ACE. ...

问题详情：如图，AD⊥AE，AB⊥AC，AD＝AE，AB＝AC.求*：△ABD≌△ACE. 【回答】*：∵AD⊥AE，AB⊥AC，∴∠CAB＝∠DAE＝90°.∴∠CAB＋∠CAD＝∠DAE＋∠...
Asicklittlegirlisbeingkeptalivethankstoherbestfriend—ad...

问题详情：Asicklittlegirlisbeingkeptalivethankstoherbestfriend—adogwhocarriesheroxygentankonhisback.Alida’sfaithfuldogcompanionMrGibbshasbeenspeciallytrainedtoshepherdthethree-year-old,whobreathesthro...
personal ad造句

haveanaxetogrind:havepersonaladvantagestogainPortraitphotographyisapersonaladvantagesofamplification.Usetheinsideinformationforpersonaladvantageorthepersonaladvantageofothers"Tip"otherswhomaybuyorse...
如图，已知AB∥DC，AD∥BC.*：（1）AB=CD；（2）AD=BC．

问题详情：如图，已知AB∥DC，AD∥BC.*：（1）AB=CD；（2）AD=BC．【回答】．略知识点：三角形全等的判定题型：解答题...
如图，AB=AC=AD，若AD∥BC，∠C=78°，∠D=　　．

问题详情：如图，AB=AC=AD，若AD∥BC，∠C=78°，∠D= ．【回答】39°．【解答】解：∵AB=AC=AD，∴∠C=∠ABC，∠D=∠ABD，∴∠ABC=∠CBD+∠D，∵AD∥BC，∴∠CBD=∠D，∴∠ABC=∠D+∠D=2∠D，又∵∠C=∠ABC，∴∠C=2∠D．∵∠C=78°，∴∠D=39°，知识...
ad nauseam造句

Alright,solet'snowstartdoingmoreinterestingthingshellothanjustsayinghelloadnauseamtoourselves.Theprimeminister’sfavouritepronouncement,whichhelikestorepeatadnauseam,isthathisgovernmentwillnever“put...
Ad-makerschoosewordsandbrandnamesverycarefullyinordert...

问题详情： Ad-makerschoosewordsandbrandnamesverycarefullyinordertomakeacreativeimageoftheproducttheyare_________. A.processing B.producing C.providing ...
officially ad造句

PresidentTheodoreRooseveltofficiallyadoptedthetermin1902.aunitofmeasurementofcapacityforliquidsofficiallyadoptedintheUnitedStatesCustomarySystem.November2,1868,timezone:NewZealandofficiallyadoptsastan...
briefly ad造句

Amomentlatertheouterdooropened,brieflyadmittingsunlight,thenYvettewasgone.ThewindownarrativeoftheshallowlotusgreenupusesilkthreadtobrieflyadorntojoinDilotuspattern....
四棱锥P—ABCD中,底面ABCD为直角梯形,BC//AD,AD⊥DC,BC=CD=l,AD=2,PA=PD,...

问题详情：四棱锥P—ABCD中,底面ABCD为直角梯形,BC//AD,AD⊥DC,BC=CD=l,AD=2,PA=PD,E为PC的中点,F为AD的中点,平面PAD⊥底面ABCD.⑴*：平面BEF⊥平而PAD;⑵若PC与底面ABCD所成的角为,求二面角E—BF—A的余弦值.【回答】知...
spiritually ad造句

Thisusuallyhappenstopeoplewhowereveryspirituallyadvancedintheirpreviouslives.ThispartofmewantstoprovethatI'mgoodatmeditating,thatI'mspirituallyadvanced,thatI'vereachedsomeoptimallevelofserenity.The...
AD

问题详情：AD【回答】如图8所示，光滑固定导轨M、N水平放置，两根导体棒P、Q平行放于导轨上，形成一个闭合回路，当一条形磁铁从高处下落接近回路时()A．P、Q将相互靠拢 B．P、Q将相互远离C．磁铁的加速度仍为g D．磁铁...
如下图，CD⊥AD，CB⊥AB，AB=AD，求*：CD=CB.

问题详情：如下图，CD⊥AD，CB⊥AB，AB=AD，求*：CD=CB.【回答】*：连结AC，CD⊥AD，CB⊥AB∴在Rt△ADC和Rt△ABC中∴Rt△ADC≌△Rt△ABC(HL)∴CD=CB.（本题也可用勾股定理直接*）知识点：三角形全等的判定题型：解答题...
Ad.1SpecialhouseinGlebe(S160everymonth)Replyto:Alalinpo...

问题详情：Ad.1SpecialhouseinGlebe(S160everymonth)Replyto:Dateavailable:December9LookingforagirlstudentroommatetoshareawellsituatedhouseinGlebefornotlessthanonemonth.2minutesfromthebusstopinaquietstreet,...