中级微观经济学（双语）知到智慧树章节测试课后答案2024年秋山东财经大学

中级微观经济学（双语）知到智慧树章节测试课后答案2024年秋山东财经大学第一章单元测试

WhatMicroeconomicsisabout?(

)

A:StudyoffinancialpositionoftheeconomyB:StudyofBusinessEnvironmentC:StudyoftheEconomyatMicroLevel

答案:StudyoftheEconomyatMicroLevelEconomicsproceedsbymakingmodelsof(

),whicharesimplifiedrepresentationsofreality.

A:people’simaginationB:socialphenomenaC:stories

答案:socialphenomenaThedemandcurveshows(

)

A:howmuchmarketwouldliketotrade.B:howmuchfirmswouldliketosellateachprices.C:howmuchpeoplewouldliketopayatthereserveprices.

答案:howmuchpeoplewouldliketopayatthereserveprices.Theconflictbetweenthescarceeconomicwantsofsocietyanditslimitedresourcesgivesrisetotheeconomizingproblem.

A:对B:错

答案:对Theonlyrequirementforamarkettobeperfectlycompetitiveisforthemarkettohavemanybuyersandsellers.

A:对B:错

答案:错Econimicsisthestudyof

A:Howsocietiesusescarceresources

B:HowtomaxmizetheprofitC:HowtomaxmizecomsumerwealthD:Howtomakeeconomicpolicies

答案:Howsocietiesusescarceresources

Scarceresourcesmean

A:Comparingwithdemand,resourcesarealwayslimitedB:ResourcesarenotrenewableC:ResourcemustbeprotectfornextgenerationD:Resourceswillbeexhausted

答案:Comparingwithdemand,resourcesarealwayslimitedInmarket,priceswilltransferinformationaboutsupplyanddemand

A:错B:对

答案:对Economicequilibriummeanstheeconomicstatuswillnotbechangedwithoutotherschanging.

A:对B:错

答案:错Marketallocationofresourcesmeansmarketusepricesassignalstoallocateresourcestotheirhighestvalueduse.

A:对B:错

答案:对

第二章单元测试

Iftherearetwogoodswithpositivepricesandthepriceofonegoodisreduced,whileincome

andotherpricesremainconstant,thenthesizeofthebudgetsetisreduced.

A:对B:错

答案:错

Ifpreferencesaretransitive,moreisalwayspreferredtoless.

A:对B:错

答案:错Withquasi-linearpreferences,theslopeofindifferencecurvesisconstantalongallraysthroughtheorigin.

A:错B:对

答案:错Hanshas27dollars,whichhedecidestospendonxandy.Commodityxcosts$16perunitandcommodityycosts$10perunit.HehastheutilityfunctionU(x,y)=5x2+2y2andhecanpurchasefractionalunitsofxandy.

A:

Hanswillchooseonlyx.B:

Hanswillchoosesomeofeachcommodity,butmorexthany.C:

Hanswillchooseonlyy.D:

Hanswillchosesomeofeachcommodity,butmoreythanx.

答案:

Hanswillchooseonlyy.WandaLittlemore'sutilityfunctionisU(x,y)=x+63y2.Herincomeis184.Ifthepriceofxis1andthepriceofyis33,howmanyunitsofgoodxwillWandademand?

A:19B:24C:22D:17

答案:19Ifoneutilityfunctionisamonotonictransformationofanother,thentheformermustassignahigherutilitynumbertoeverybundlethanthelatter.

A:错B:对

答案:错Ifaconsumerdoesnothaveconvexpreferences,thenapointoftangencybetweenherindifferencecurveandherbudgetlinemustbeanoptimalconsumptionpoint.

A:错B:对

答案:错Isobelconsumespositivequantitiesofbothjamandandjuice.Thepriceofjamis5centsperunitandthepriceofjuiceis10centsperunit.Hermarginalutilityofjamis10andhermarginalutilityofjuiceis5.

A:Withoutchanginghertotalexpenditures,shecouldincreaseherutilitybyconsumingmorejuiceandlessjam.B:Withoutchanginghertotalexpendituresonjamandjuice,shecouldnotincreaseherutility.C:Wecan'ttellwhetheranyoftheotherstatementsaretrueorfalsewithoutknowingthequantitiessheconsumes.D:Withoutchanginghertotalexpenditures,shecouldincreaseherutilitybyconsumingmorejamandlessjuice.

答案:Withoutchanginghertotalexpenditures,shecouldincreaseherutilitybyconsumingmorejamandlessjuice.

A:24B:22C:17D:19

答案:19Iftheequlibriumpriceofgasolineis$1.00pergallonandthegovernmentplacesapriceceilingongasolineof$1.50pergallon,theresultwillbeashortageofgasoline

A:错B:对

答案:错

第三章单元测试

Ifpreferencesarequasilinear,thenforveryhighincomestheincomeoffercurveisastraightlineparalleltooneoftheaxes.

A:对B:错

答案:对Iftwogoodsaresubstitutes,thenanincreaseinthepriceofoneofthemwillincreasethedemandfortheother.

A:对B:错

答案:对AnEngelcurveisademandcurvewiththeverticalandhorizontalaxesreversed.

A:对B:错

答案:错Daisyreceivedataperecorderasabirthdaygiftandisnotabletoreturnit.HerutilityfunctionisU(x,y,z)=x+z1/2f(y)wherezisthenumberoftapesshebuys,yisthenumberoftaperecordersshehasandxistheamountofmoneyshehaslefttospend.f(y)=0ify<1andf(y)=8ifyis1orgreater.Thepriceoftapesis2andshecaneasilyaffordtobuydozensoftapes.Howmanytapeswillshebuy?

A:8B:2C:6D:4

答案:4Mikeconsumestwocommodities,xandy;andhisutilityfunctionismin{x+2y,y+2x}.Hechoosestobuy8unitsofgoodxand16unitsofgoody.Thepriceofgoodyis0.50.Whatishisincome?

A:32B:40C:24D:16

答案:16Quasilinearpreferencesarehomotheticwhentheoptimalamountofoneofthegoodsisnotaffordable.

A:错B:对

答案:错Waltconsumesstrawberriesandcreambutonlyinthefixedratioofthreeboxesofstrawberriestotwocartonsofcream.Atanyotherratio,theexcessgoodsaretotallyuselesstohim.Thecostofaboxofstrawberriesis10andthecostofacartonofcreamis10.Walt'sincomeis200.Whichofthefollowingistrue?

A:Waltdemands10boxesofstrawberries.B:Waltdemands10cartonsofcream.C:Waltdemands12boxesofstrawberries.D:Waltconsidersstrawberriesandcartonsofcreamtobeperfectsubstitutes.

答案:Waltdemands12boxesofstrawberries.Madonnabuysonlytwogoods.HerutilityfunctionisCobb-Douglas.Herdemandfunctionshavewhichofthefollowingproperties?

A:Herdemandforneithergooddependsonincome.B:Herdemandforoneofthetwogoodsdoesnotdependonincome.C:Herdemandforeachofthegoodsdependsonincomeandonthepricesofbothgoods.D:Herdemandforeachofthetwogoodsdependsonlyonherincomeandonthepriceofthatgooditself.

答案:Herdemandforeachofthetwogoodsdependsonlyonherincomeandonthepriceofthatgooditself.Thedownwardslopingdemandcurvecanbeexplainedby：

A:TheincomeeffectB:DiminishingmarginalutilityC:DiminishingmarginalreturnsD:noneofall

答案:Theincomeeffect；DiminishingmarginalutilityOtherthingsheldconstant,whichofthefollowingwouldnotcauseachangeindemandforbeef?

A:AnincreaseinthepriceofchickenwhichisasubstituteforbeefB:AdecreaseinthepriceofbeefC:Adecreaseinconsumers'incomesduringarecessionD:Anexpectationthatnextmonthpriceswillbelower

答案:Adecreaseinthepriceofbeef

第四章单元测试

Thestrongaxiomofrevealedpreferencerequiresthatifaconsumerchoosesxwhenhecanaffordy;andchoosesywhenhecanaffordz;thenhewillnotchoosezwhenhecanaffordx.

A:对B:错

答案:对Ifaconsumermaximizesautilityfunctionsubjecttoabudgetconstraintandhasstrictlyconvexpreferences,thenhisbehaviorwillnecessarilysatisfytheweakaxiomofrevealedpreferenceandthestrongaxiomofrevealedpreference.

A:对B:错

答案:对TheLaspeyrespriceindexdiffersfromthePaaschepriceindexbecausetheLaspeyresindexholdspricesconstantandvariesquantitieswhilethePaaschepriceindexholdsquantitiesconstantandvariesprices.

A:错B:对

答案:错

LetAstandforthebundle(7,9);Bstandforthebundle(10,5);andCstandforthebundle(6,6).Whenpricesare(2,4);BettychoosesC.Whenpricesare(12,3)shechoosesA.Whichofthefollowingistrue?

A:AisdirectlyrevealedpreferredtoB.B:AisindirectlyrevealedpreferredtoB.C:CisdirectlyrevealedpreferredtoA.D:Noneofall

答案:NoneofallRememberthattheLaspeyrespriceindexusestheoldquantitiesfortheweights.In1971,goodxcost3andgoodycost1.Thecurrentpriceofgoodxis3andthecurrentpriceofgoodyis5.In1971theconsumptionbundlewas(x,y)=(3,5).Thecurrentconsumptionbundleis(x,y)=(9,4).TheLaspeyresindexofcurrentpricesrelativeto1971pricesisclosesttowhichofthefollowingnumbers?

A:2.43B:0.30C:1.52D:3.36

答案:2.43Itfollowsfromtheweakaxiomofrevealedpreferencethatifaconsumerchoosesxwhenhecouldaffordyandchoosesywhenhecouldaffordx;thenhisincomemusthavechangedbetweenthetwoobservations.

A:对B:错

答案:错Atprices(4,12);Harrychoosesthebundle(9,4).Attheprices(8,4);Harrychoosesthebundle(2,9).Isthisbehaviorconsistentwiththeweakaxiomofrevealedpreference?

A:Wewouldhavetoobserveathirdchoicetobeabletosay.B:Itdependsonhisincome.C:NoD:Yes

答案:YesAstudentspendsallofherincomeonpizzaandbooks.Whenpizzascost$3eachandbookscost$10each,sheconsumed30pizzasand3bookspermonth.Thepriceofpizzasfellto$2.90eachwhilethepriceofbooksroseto$11each.Thepricechange:

A:leftherexactlyaswelloff

asbefore.B:leftheratleastaswelloff

asbeforeandpossiblyhelpedher.C:madeherworseoffD:hadthesameeffectasa$3increaseinherincome.

答案:leftheratleastaswelloff

asbeforeandpossiblyhelpedher.Ifthebundlexisrevealed(directlyorindirectly)aspreferredtothebundleyandx¹y,thenitisneverthecasethattheyisrevealed(directlyorindirectly)aspreferredtox;sothenecessaryandsufficientconditionforwell-behavedpreferenceis(

)

A:convexityandmonotonicityB:indirectlypreferredC:RevoveringindifferencecurveD:StrongAxiomofRevealedPreference

答案:StrongAxiomofRevealedPreferenceRevealedpreferenceanalysisteststhebehavioralhypothesisthataconsumerchoosesthemostpreferredbundlefromthoseavailable.Discovertheconsumer'spreferencerelation.

A:对B:错

答案:错

第五章单元测试

AGiffengoodmustbeaninferiorgood.

A:错B:对

答案:对Thecompensateddemandfunctionreferstothedemandfunctionofsomeonewhoisadequatelypaidforwhatheforshesells.

A:错B:对

答案:错Inthecaseofhomotheticpreferencestheentirechangeindemandfromapricechangeisduetothesubstitutioneffect.

A:错B:对

答案:错Waltconsidersxandytobeperfectsubstitutes.Theyoriginallycost10and9respectively.Hisincomeis720.Onedaythepriceofxdropsto8.Whichofthefollowingistrue?

A:Theincomeeffectincreasesthequantityofxby80.B:Theincomeeffectincreasesthequantityofyby90．C:Thesubstitutioneffectincreasesthequantityofxby90D:Thesubstitutioneffectincreasesthequantityofyby80.

答案:Thesubstitutioneffectincreasesthequantityofxby90SupposethatbananasareanormalgoodandWoodyiscurrentlyconsuming100bananasatapriceof10centseach.

A:Whetherhisordinarydemandcurveorhiscompensateddemandcurveissteeper,dependsonwhetherhispriceelasticityisgreaterthan1.B:HisSlutskycompensateddemandcurvegoingthroughthispointissteeperthanhisordinarydemandcurve.C:HisordinarydemandcurvegoingthroughthispointissteeperthanhisSlutskycompensateddemandcurve.D:HisordinarydemandcurveissteepertotheleftandhisSlutskycompensateddemandcurveissteepertotherightofthispoint.

答案:HisSlutskycompensateddemandcurvegoingthroughthispointissteeperthanhisordinarydemandcurve.Johnpurchasestwogoods,xandy.Goodxisaninferiorgoodforsomerangeofincome.Theremustbeanotherrangeofincomeforwhichgoodxisanormalgood.

A:错B:对

答案:对Thefollowingcanbesaidabouttheincomeandsubstitutioneffectsofapriceincreaseonthedemandforthegoodwhosepricerose:

A:Bothcanbeeitherpositiveornegative.B:Whilethelatterisalwaysnegative,theformercanbeeitherpositiveornegative.C:Whiletheformerisalwaysnegative,thelattercanbeeitherpositiveornegative.D:Theformerisalwayspositiveandthelatterisalwaysnegative.

答案:Whilethelatterisalwaysnegative,theformercanbeeitherpositiveornegative.Whenthepriceofxrises,Marvinrespondsbychanginghisdemandforx.Thesubstitutioneffectisthepartofthischangethatrepresentshischangeindemand:

A:holdingthepricesofsubstitutesconstant.B:ifheisallowedtosubstituteasmuchxforyashewishes.C:ifhismoneyincomeisheldconstantwhenthepriceofxchanges.D:noneofall.

答案:noneofall.nonnegativemeans(

)

A:Ifthepriceofagoodgoesup,ifthegoodisanormalgood,thenitisnonnegativeB:Ifwehaveanormalgood,thesubtitutioneffectandtheincomeeffectworkinisnonnegative.C:Ifpriceofgoodgoesdown,thechangeinthedemandforthegoodduetothesubtitutioneffectmustbenonnegativeD:Forsamllchangesinprice,HicksandSlutskydefinitionsforsubstitutioneffectsarenonnegative

答案:Ifpriceofgoodgoesdown,thechangeinthedemandforthegoodduetothesubtitutioneffectmustbenonnegativeoppositetothatofthepricechange,(

)justlikethesultskysubstitution

effect

A:SARPisbothanecessaryandasufficientcondition(UnlikeWARP)forwhat?B:HickssubstitutioneffectC:HickssubstitutioneffectmustbeinadirectionD:Thesubstitutioneffectis

答案:Hickssubstitutioneffectmustbeinadirection

第六章单元测试

Ifarationalutilitymaximizerisanetdemanderofagood,andifanincreaseinitspricecauseshimtobuymoreofit,thenitmustbeaninferiorgood.

A:错B:对

答案:对Ifaconsumerisabuyerofsomegoodsandasellerofothers,thenachangeinpriceswillgenerateanextraincomeeffectintheSlutskyequationduetotherevaluationoftheconsumer'sendowment.

A:错B:对

答案:对Ifautilitymaximizerisanetsellerofsomethingandthepriceofthatgoodriseswhileotherpricesstayconstant,hersituationmightimprovesomuchthatshebecomesanetbuyer

A:错B:对

答案:错MarshaMellowisveryflexible.Sheconsumesxandy.Shesays`Givemexorgivemey;Idon'tcare.Ican'ttellthedifferencebetweenthem.'Sheiscurrentlyendowedwith14unitsofxand6unitsofy.Thepriceofxis4timesthepriceofy.Marshacantradexandyatthegoingprices,buthasnoothersourceofincome.HowmanyunitsofywillMarshaconsume?

A:62B:6C:20D:66

答案:62Yoraminsistsonconsuming3timesasmuchyasheconsumesofx(sohealwayshasy=3x).Hewillconsumethesegoodsinnootherratio.Thepriceofxis2timesthepriceofy.Yoramhasanendowmentof24x0sand42y0swhichhecantradeatthegoingprices.Hehasnoothersourceofincome.WhatisYoram'sgrossdemandforx?

A:66B:18C:16D:90

答案:18Ifleisureisanormalgood,thenanincreaseinnon-laborincomewillreducelaborsupply.

A:对B:错

答案:对Mr.Coghas18hoursperdaytodividebetweenlaborandleisure.HisutilityfunctionisU(C,R)=CR;whereCisdollarsperyearspentonconsumptionandRishoursofleisure.Ifhehasanonlaborincomeof40dollarsperdayandawagerateof8dollarsperhour,hewillchooseacombinationoflaborandleisurethatallowshimtospend:

A:82dollarsperdayonconsumption.B:112dollarsperdayonconsumption.C:92dollarsperdayonconsumption.D:184dollarsperdayonconsumption.

答案:92dollarsperdayonconsumption.IfAbishagowns12quincesand10kumquats,andifthepriceofkumquatsis3timesthepriceofquinces,howmanykumquatscansheaffordifshebuysasmanykumquatsasshecan?

A:28B:22C:10D:14

答案:14IfAbishagowns16quincesand15kumquats,andifthepriceofkumquatsis4timesthepriceofquinces,howmanykumquatscansheaffordifshebuysasmanykumquatsasshecan?

A:19B:38C:31D:15

答案:19ThesharepriceofGrathOiliscurrently$77.06.Severalmonthsago,whenthepricewas$51.21,Charlesbought186sharesofGrathOil.IfhesellsallofhisstockinGrathOiltoday,howmuchprofitwillhemake?→$1,504.17

A:对B:错

答案:错

第七章单元测试

Consumer'ssurplusisanothernameforexcessdemand.

A:对B:错

答案:错Theequivalentvariationinincomefromataxistheamountofextraincomethataconsumerwouldneedinordertobeaswelloffafterthetaxisimposedashewasoriginally.

A:错B:对

答案:错

Withquasilinearpreferences,theequivalentvariationandthecompensatingvariationinincomeduetoataxarethesame.

A:对B:错

答案:对Ella'sutilityfunctionismin{4x,y}.Ifthepriceofxis15andthepriceofyis20,howmuchmoneywouldsheneedtobeabletopurchaseabundlethatshelikesaswellasthebundle(x,y)=(5,8)?

A:198B:235C:92

D:190

答案:190Sam'sutilityfunctionisU(x,y)=2x+ywherexisthenumberofx'sheconsumesperweekandyisthenumberofy'sheconsumesperweek.Samhas$200aweektospend.Thepriceofxis4.Samcurrentlydoesn'tconsumeanyy.Samhasreceivedaninvitationtojoinaclubdevotedtoconsumptionofy.Ifhejoinstheclub,Samcangetadiscountonthepurchaseofy.Ifhebelongedtotheclubhecouldbuyyfor$1aunit.HowmuchisthemostSamwouldbewillingtopaytojointhisclub?

A:$100aweekB:nothingC:$40aweekD:$50aweek

答案:$100aweekSirPlushasademandfunctionformeadthatisgivenbytheequationD(p)=100-P.Ifthepriceofmeadis75,howmuchisSirPlus'snetconsumersurplus?

A:625B:312.5C:25D:156.25

答案:312.5SamhasquasilinearpreferencesandhisdemandfunctionforxisD(p)=15-p/3.Thepriceofxisinitially$15perunitandincreasesto$24perunit.Sam'schangeisconsumersurplusistheclosestto:

A:-168B:75C:-76D:-27

答案:-76Attheinitialprices,Teodoroisanetsellerofapplesandanetbuyerofbananas.Ifthepriceofapplesdecreasesandthepriceofbananasdoesnotchange:

A:thecompensatingvariationmustbepositiveandtheequivalentvariationnegative.B:boththecompensatingvariationandtheequivalentvariationmustbenegative.C:boththecompensatingvariationandtheequivalentvariationmustbepositive.D:thecompensatingvariationmustbenegativeandtheequivalentvariationpositive.

答案:boththecompensatingvariationandtheequivalentvariationmustbepositive.(

)isthedifferencebetweenwhatconsumersarewillingandabletopayforagoodandwhattheyactuallypayforthegood.

A:measuresofcostB:ConsumerSurplusC:marginalproductD:Demandcurves

答案:ConsumerSurplus(

)depictthevariousquantitiesthatbuyerswouldbewillingandabletopurchaseatdifferentprices

A:DemandcurvesB:ConsumersurplusC:FixedcostD:Averagecosts

答案:Demandcurves

第八章单元测试

TheinversedemandcurveP(x)foragoodxmeasuresthepriceperunitatwhichthequantityxwouldbedemanded.

A:错B:对

答案:对Ifapricechanges,thenchangesinconsumptionattheintensivemarginarechangesthathappenbecauseconsumersaltertheamountsthattheyconsume,butdonoteitherstopconsumingorstartconsumingthegood.

A:错B:对

答案:对Ifthedemandfunctionisq=3m=p;wheremisincomeandpisprice,thentheabsolutevalueofthepriceelasticityofdemanddecreasesaspriceincreases.

A:错B:对

答案:错Apeckis1/4ofabushel.Ifthepriceelasticityofdemandforbranis-0.2whenbranismeasuredinbushels,thenwhenbranismeasuredinpecks,thepriceelasticityofdemandforbranwillbe:

A:NoneofallB:-0.05C:-0.8

D:-0.1

答案:NoneofallMarginalrevenueisequaltopriceifthedemandcurveishorizontal.

A:错B:对

答案:对Theconstantelasticityofdemandforcigaretteshasbeenestimatedtobe0.5.Toreducesmokingby75%,approximatelyhowmuchtaxneedstobeaddedtoa$1pack?

A:$0.75B:$0.38C:$2.25D:$1.5

答案:$1.5Marketdemandrelevanttoindustrymarketingexpenditureshowinfinity,issaidtobe(

)

A:marketpotentialB:productpotentialC:marketdemandD:sharepotential

答案:marketpotential(

)Occurswhenthequantitydemandedchangeslittleaspricechanges

A:InelasticB:ElasticC:unitelasticD:Fixedcost

答案:InelasticElasticityofDemandmeansameasureofhowresponsiveconsumersaretopricechanges.

A:对B:错

答案:对PriceFloormeansalegalminimumpricethatbuyersmustpayforaproduct.

A:对B:错

答案:对

第九章单元测试

Ifthesupplycurveisvertical,thentheamountsuppliedisindependentofprice.

A:对B:错

答案:对Thesupplycurveslopesupandtotheright.Ifthedemandcurveshiftsupwardtoanewcurvewhichiseverywherehigherthantheoldcurve(butpossiblyofdifferentslope)andifthesupplycurvedoesnotshift,thentheequilibriumpriceandquantitymustnecessarilyincrease.

A:对B:错

答案:对AneconomicsituationisParetooptimalonlyifthereisnowaytomakesomeonebetteroff.

A:错B:对

答案:错Thedemandforpicklesisgivenbyp=131-2qandsupplyisgivenbyp=5+7q.Whatistheequilibriumquantity?

A:19B:14C:103D:11

答案:14Thedemandfunctionforfreshstrawberriesisq=200-5pandthesupplyfunctionisq=60+2p.Whatistheequilibriumprice?

A:50B:10C:20D:40

答案:20Ifaquantitytaxiscollectedfromcompetitivesuppliersofagood,placingataxonthegoodcausesthepricepaidbyconsumerstoincreasemorethanifthetaxhadbeencollecteddirectlyfromthebuyers.

A:错B:对

答案:错ThedemandfunctionforxisD(p)=65-2pandthesupplyfunctionisS(p)=20+p.Thepricethatshouldbesettorestrictquantitysuppliedto30unitsisclosestto:

A:5B:15C:50D:10

答案:10Thedemandfunctionforrentalapartmentsisq=960-7pandthesupplyfunctionisq=160+3p.Thegovernmentmakesitillegaltochargearenthigherthan35.Howmuchexcessdemandwilltherebe?

A:726B:364C:450D:149

答案:450(

)factorsotherthanpricethatlocatethepositionofademandcurve1.consumers'tastes2.ofconsumersinthemarket3.consumers'incomes4.thepricesofrelatedgoods5.expectedpricesSHIFTSthecurve

A:normalgoodB:inferiorgoodC:determinantsofdemandD:determinantsofsupply

答案:determinantsofdemandagood(orservice)whoseconsumptiondeclinesasincomerisesandincreasesasincomedecreases

increaseinincome=decreaseinconsumptiondecreaseinincome=increaseinconsumption

A:inferiorgoodB:pricefloorC:substitutegoodD:normalgood

答案:inferiorgood

第十章单元测试

Theproductionsetofafirmisthesetofallproductsthefirmcanproduce.

A:对B:错

答案:错Aproductionisoquantisalocusofcombinationsofinputsthatareequallyprofitable.

A:错B:对

答案:错Ifafirmmovesfromonepointonaproductionisoquanttoanotherpointonthesameisoquant,whichofthefollowingwillcertainlyNOThappen?

A:achangeinthelevelofoutputB:achangeinthemarginalproductsoftheinputsC:achangeintherateoftechnicalsubstitutionD:achangeintheratioinwhichtheinputsarecombined

答案:achangeinthelevelofoutputInanyproductionprocess,themarginalproductoflaborequals:

A:thevalueoftotaloutputminusthecostofthefixedcapitalstock.B:totaloutputdividedbytotallaborinputs.C:thechangeinoutputperunitchangeinlaborinputfor'small'changesintheamountofinput.D:totaloutputproducedwiththegivenlaborinputs.

答案:thechangeinoutputperunitchangeinlaborinputfor'small'changesintheamountofinput.Theproductionfunctionf(x,y)=x+yhasconstantreturnstoscale

A:错B:对

答案:对TheproductionfunctionQ=50K0.75L0.75exhibits

A:increasingreturnstoscale.B:decreasingreturnstoscale.C:constantreturnstoscale.D:increasing,thendiminishingreturnstoscale.

答案:increasingreturnstoscale.Afirmhasaproductionfunctionf(x,y)=1:10(x0.20+y0.20)5wheneverx>0andy>0.

A:constantreturnstoscale.B:increasingreturnstoscaleifx+y>1anddecreasingreturnstoscaleotherwise.C:decreasingreturnstoscale.D:increasingreturnstoscale.

答案:increasingreturnstoscale.(

)meanstherelationshipbetweentheinputsemployedbyafirmandthemaxoutputitcanproducewiththoseinputs.-Technologyisprocesstoturnintooutproductionfunctionrepresentsfirmstechnology

A:constantreturnstoscaleB:AveragetotalcostC:ProductionfunctionD:Graphingproduction

答案:ProductionfunctionAtsomepintaddingmoreofavariableinput,suchaslabor,tothesameamountofafixedinput,suchascapital,willcausethemarginalproductofthevariableinputtodecline--MPLcouldbecomenegativeifworkersgotineachother'swaybutnofirmwouldhiretothispoint

A:对B:错

答案:对Does(

)declineeventuallyasthenumberofworkersincreases

A:MinimumefficientscaleB:MPLC:averagefixedcostD:totalcost

答案:MPL

第十一章单元测试

Themarginalproductofafactorisjustthederivativeoftheproductionfunctionwithrespecttotheamountofthisfactor,holdingtheamountsofotherfactorinputsconstant.

A:错B:对

答案:对Theweakaxiomofprofitmaximizingbehaviorstatesthatinamodernmixedeconomy,firmshaveonlyaweakincentivetomaximizeprofits.

A:对B:错

答案:错Afixedfactorisafactorofproductionthatisusedinfixedproportiontothelevelofoutput.

A:错B:对

答案:错Acompetitivefirmproducesoutputusingthreefixedfactorsandonevariablefactor.Thefirm'sshortrunproductionfunctionis,wherexistheamountofvariablefactorused.Thepriceofoutputis$3perunitandthepriceofthevariablefactoris$9perunit.Intheshortrun,howmanyunitsofxshouldthefirmuse?

A:19B:80C:40D:20

答案:40Aprofit-maximizingcompetitivefirmusesjustoneinput,x.Itsproductionfunctionisq=8x1/2.Thepriceofoutputis16andthefactorpriceis8.Theamountofthefactorthatthefirmdemandsis:

A:48B:22.63C:64D:10

答案:64Justasinthetheoryofutilitymaximizingconsumers,thetheoryofprofitmaximizingfirmsallowsthepossibilityof"Giffenfactors".Thesearefactorsforwhichafallinpriceleadstoafallindemand.

A:对B:错

答案:错TheproductionfunctionisgivenbyF(L)=6L2/3.Supposethatthecostperunitoflaboris12andthepriceofoutputis6,howmanyunitsoflaborwillthefirmhire?

A:16B:8C:24D:4

答案:8WhenFarmerHoglundappliesNpoundsoffertilizerperacre,themarginalproductoffertilizeris1-(N=200)bushelsofcorn.Ifthepriceofcornis$1perbushelandthepriceoffertilizeris$0.40perpound,thenhowmanypoundsoffertilizerperacreshouldFarmerHoglunduseinordertomaximizehisprofits?

A:248B:64C:120D:240

答案:120Acompetitivefirmproducesoutputusingthreefixedfactorsandonevariablefactor.Thefirm'sshortrunproductionfunctionisq=163x-2x2,wherexistheamountofvariablefactorused.Thepriceofoutputis$3perunitandthepriceofthevariablefactoris$9perunit.Intheshortrun,howmanyunitsofxshouldthefirmuse?

A:19B:40C:20D:80

答案:40Whichofthefollowingisashort-runadjustment?

A:ThenumberoffarmsintheUnitedStatesdeclinesby5percentB:AlocalbakeryhirestwoadditionalbakersC:BMWconstructsanewassemblyplantinSouthCarolinaD:Sixnewfirmsentertheplasticsindustry

答案:Alocalbakeryhirestwoadditionalbakers

第十二章单元测试

Aprofitmaximizingdairyfarmiscurrentlyproducing10,000gallonsofmilkperday.Th