国际经济学作业答案-第六章Word文件下载.doc
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国际经济学作业答案-第六章Word文件下载.doc
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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) explicitconsiderationatfirmlevelofthefeedbackeffectsofotherfirms’pricingdecisions.
(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) thesizeofthetradingpartner’scountry.
(c) thesizeofthedomesticmarket.
(d) thesizeofthedomesticplustheforeignmarket.
10. Wherethereareeconomiesofscale,anincreaseinthesizeofthemarketwill
(a) increasethenumberoffirmsandraisethepriceperunit.
(b) decreasethenumberoffirmsandraisethepriceperunit.
(c) increasethenumberoffirmsandlowerthepriceperunit.
(d) decreasethenumberoffirmsandlowerthepriceperunit.
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. Internationaltradebasedonexternalscaleeconomiesinbothcountriesislikelytobec
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