国际经济学作业答案第六章Word文件下载.docx
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国际经济学作业答案第六章Word文件下载.docx
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(d)remainsconstant.
(e)Noneoftheabove.
Answer:
B
2.Internaleconomiesofscalearisewhenthecostperunit
(b)fallsastheindustrygrowslarger.
(c)risesastheaveragefirmgrowslarger.
(d)fallsastheaveragefirmgrowslarger.
D
3.Externaleconomiesofscale
(a)maybeassociatedwithaperfectlycompetitiveindustry.
(b)cannotbeassociatedwithaperfectlycompetitiveindustry.
(c)tendstoresultinonehugemonopoly.
(d)tendstoresultinlargeprofitsforeachfirm.
A
4.Internaleconomiesofscale
(c)areassociatedonlywithsophisticatedproductssuchasaircraft.
(d)cannotformthebasisforinternationaltrade.
5.Amonopolisticfirm
(a)cansellasmuchasitwantsforanypriceitdeterminesinthemarket.
(b)cannotdeterminetheprice,whichisdeterminedbyconsumerdemand.
(c)willneversellaproductwhosedemandisinelasticatthequantitysold.
(d)cannotselladditionalquantityunlessitraisesthepriceoneachunit.
C
6.Monopolisticcompetitionisassociatedwith
(a)cut-throatpricecompetition.
(b)productdifferentiation.
(c)explicitconsiderationatfirmlevelofthefeedbackeffectsofotherfirmsricingdecisions.'
p
(d)highprofitmargins.
7.Themostcommonmarketstructureis
(a)perfectcompetition.
(b)monopolisticcompetition.
(c)small-groupoligopoly.
(d)perfectlyverticalintegration.
8.Modelingtradeinmonopolisticindustriesisproblematicbecause
(a)thereisnoonegenerallyacceptedmodelofoligopolybehavior.
(b)therearenomodelsofoligopolybehavior.
(c)itisdifficulttofindanoligopolyintherealworld.
(d)collusionamongoligopolistsmakesusabledatarare.
9.Wherethereareeconomiesofscale,thescaleofproductionpossibleinacountryisconstrainedby
(a)thesizeofthecountry.
(b)thesizeofthetradingpartnercountry.'
s
(c)thesizeofthedomesticmarket.
(d)thesizeofthedomesticplustheforeignmarket.
10.Wherethereareeconomiesofscale,anincreaseinthesizeofthemarketwill
(a)increasethenumberoffirmsandraisethepriceperunit.
(b)decreasethenumberoffirmsandraisethepriceperunit.
(c)increasethenumberoffirmsandlowerthepriceperunit.
(d)decreasethenumberoffirmsandlowerthepriceperunit.
(e)Noneoftheabove.Answer:
11.ThesimultaneousexportandimportofwidgetsbytheUnitedStatesisanexampleof
(a)increasingreturnstoscale.
(b)imperfectcompetition.
(c)intra-industrytrade.
(d)inter-industrytrade.
12.Ifoutputmorethandoubleswhenallinputsaredoubled,productionissaidtooccurunderconditionsof
13.Intra-industrytradecanbeexplainedinpartby
(a)transportationcostswithinandbetweencountries.
(b)problemsofdataaggregationandcategorization.
(c)increasingreturnstoscale.
(d)Alloftheabove.
14.Ifsomeindustriesexhibitinternal(firmspecific)increasingreturnstoscaleineachcountry,weshouldnotexpecttosee
(a)intra-industrytradebetweencountries.
(b)perfectcompetitionintheseindustries.
(c)inter-industrytradebetweencountries.
(d)highlevelsofspecializationinbothcountries.
15.Intra-industrytradeismostcommoninthetradepatternsof
(a)developingcountriesofAsiaandAfrica.
(b)industrialcountriesofWesternEurope.
(c)allcountries.
(d)North-Southtrade.
16.Internationaltradebasedonscaleeconomiesislikelytobeassociatedwith
(a)Ricardiancomparativeadvantage.
(b)comparativeadvantageassociatedwithHeckscher-Ohlinfactor-proportions.
(c)comparativeadvantagebasedonqualityandservice.
(d)comparativeadvantagebasedondiminishingreturns.
E
17.Internationaltradebasedonexternalscaleeconomiesinbothcountriesislikelytobecarriedoutbya
(a)relativelylargenumberofpricecompetingfirms.
(b)relativelysmallnumberofpricecompetingfirms.
(c)relativelysmallnu
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