曼昆《经济学原理》（微观）第五版测试题库 (14)Word下载.docx

曼昆《经济学原理》（微观）第五版测试题库 (14)Word下载.docx

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F DIF:

2 REF:

14-1 NAT:

Analytic

LOC:

Perfectcompetition TOP:

Averagerevenue |MarginalrevenueMSC:

Interpretive

2.Forafirmoperatinginaperfectlycompetitiveindustry,marginalrevenueandaveragerevenueareequal.ANS:

T DIF:

3.Ifafirmnoticesthatitsaveragerevenueequalsthecurrentmarketprice,thatfirmmustbeparticipatinginacompetitivemarket.

AveragerevenueMSC:

4.Aprofit-maximizingfirminacompetitivemarketwillincreaseproductionwhenaveragerevenueexceedsmarginalcost.

5.Becausetherearemanybuyersandsellersinaperfectlycompetitivemarket,noonesellercaninfluencethemarketprice.

1 REF:

CompetitivemarketsMSC:

Definitional

6.Firmsoperatinginperfectlycompetitivemarketstrytomaximizeprofits.

ProfitmaximizationMSC:

Applicative

7.Incompetitivemarkets,firmsthatraisetheirpricesaretypicallyrewardedwithlargerprofits.ANS:

8.Whenanindividualfirminacompetitivemarketincreasesitsproduction,itislikelythatthemarketpricewillfall.

9.Inacompetitivemarket,firmsareunabletodifferentiatetheirproductfromthatofotherproducers.ANS:

10.Firmsinacompetitivemarketaresaidtobepricetakersbecausetherearemanysellersinthemarketandthegoodsofferedbythefirmsareverysimilarifnotidentical.

929

930 v Chapter14/FirmsinCompetitiveMarkets

11.Afirm'

sincentivetocomparemarginalrevenueandmarginalcostisanapplicationoftheprinciplethatrationalpeoplethinkatthemargin.

14-2 NAT:

12.Bycomparingthemarginalrevenueandmarginalcostfromeachunitproduced,afirminacompetitivemarketcandeterminetheprofit-maximizinglevelofproduction.

13.Firmsoperatinginperfectlycompetitivemarketsproduceanoutputlevelwheremarginalrevenueequalsmarginalcost.

MarginalrevenueMSC:

14.Afirmiscurrentlyproducing100unitsofoutputperday.Themanagerreportstotheownerthatproducingthe100thunitcoststhefirm$5.Thefirmcansellthe100thunitfor$4.75. Thefirmshouldcontinuetoproduce100unitsinordertomaximizeitsprofits（orminimizeitslosses）.

Analytical

15.Afirmiscurrentlyproducing100unitsofoutputperday.Themanagerreportstotheownerthatproducingthe100thunitcoststhefirm$5.Thefirmcansellthe100thunitfor$5. Thefirmshouldcontinuetoproduce100unitsinordertomaximizeitsprofits（orminimizeitslosses）.

16.Afirmiscurrentlyproducing100unitsofoutputperday.Themanagerreportstotheownerthatproducingthe100thunitcoststhefirm$5.Thefirmcanselltheunitfor$6.Thefirmshouldproducemorethan100unitsinordertomaximizeitsprofits（orminimizeitslosses）.

17.Adairyfarmermustbeabletocalculatesunkcostsinordertodeterminehowmuchrevenuethefarmreceivesforthetypicalgallonofmilk.

F DIF:

1

REF:

14-2

NAT:

Perfectcompetition

TOP:

Sunkcosts

MSC:

18.Becausenothingcanbedoneaboutsunkcosts,theyareirrelevanttodecisionsaboutbusinessstrategy.

T DIF:

2

19.Aminiaturegolfcourseisagoodexampleofwherefixedcostsbecomerelevan