Data,Model and Decision智慧樹知到答案章節(jié)測(cè)試2023年華南理工大學(xué)

第一章測(cè)試Thepurposeofbreak-evenanalysisistodeterminethenumberofunitsofaproducttosellorproducethatwillequatetotalrevenuewithtotalcost.Atthebreak-evenpoint,theprofitis()zero.

A:equalto

B:morethan

C:lessthan

答案:AIngeneral,anincreaseinvariablecostswill（）thebreak-evenpoint,allotherthingsheldconstant.

A:notchange

B:decrease

C:increase

答案:CIt’simportanttomakefulluseoftechniquesinmanagementscienceprocess,whichtechniquesarecommonlyusedforthepurposeofdecision-making（）?

A:Transportationandassignment

B:Linearprogrammingmodels

C:Projectmanagement(likeCPM/PERT)

D:Decisionanalysis

答案:ABCDManufacturingcompaniesdeveloplinearprogrammingmodelstohelpdecidehowmanyunitsofdifferentproductstheyshouldproducetomaximizetheirprofit(orminimizetheircost),givenscarceresourcessuchascapital,labor,andfacilities.(）

A:對(duì)

B:錯(cuò)

答案:A第二章測(cè)試Ifthegraphicalmethodisusedtosolvethelinearprogrammingproblem,thenumberofdecisionvariablesshouldbe().

A:Nolimitation

B:2

C:≤5

D:≥3

答案:BInthelinearprogrammingmodel,()restrictthedecisionvariablestozeroorpositivevalues.

A:Nonnegativityconstraints

B:Resourcerequirements

C:Objectivefunction

D:Thefeaturesofvariables

答案:AIftheoptimalsolutionofthelinearprogrammingproblemisreachedattwoverticesoffeasibledomainatthesametime,thentheoptimalsolutionhas().

A:Alinesegmentconnectingtwovertices

B:It’simpossible

C:Twosolutions

D:Astraightlineconnectingtwovertices

答案:AThefollowingfeaturesofstandardformofLinearprogrammingarecorrect（）.

A:Thereisnolimittothesymbolofdecisionvariables

B:Thedecisionvariablesarenonnegative

C:Noneofaboveistrue

D:Thedecisionvariablesarenotequaltozero

答案:BTheoptimalsolutionofthelinearprogrammingproblemmustbethefeasiblesolution.（）

A:對(duì)

B:錯(cuò)

答案:A第三章測(cè)試Giventhatalinearprogrammingproblemisasfollowing,theoptimalsolutionofdualproblemis().

A:Y=(0,3/5,4/5,1)

B:Y=(1,0,3/5,4/5)

C:Y=(4/5,3/5,1,0)

D:Y=(0,3/5,1,4/5)

答案:CThefollowingstatementsof100%ruleofobjectivefunctioncoefficientiscorrect（）.

A:Onlycanincreasingcoefficientsfollowthis100%rule.

B:Noneofaboveiscorrect.

C:Thesumofallchangedcoefficientspercentagesofallowableincreaseandallowabledecreasedoesnotreach100%,theoptimalsolutionwon’tchange.

D:Thesumofallchangedcoefficientspercentagesofallowableincreaseandallowabledecreaseequals100%,theoptimalsolutionwon’tchange.

答案:CThedualityofadualproblemisnotnecessarilytheprimalproblem.(）

A:對(duì)

B:錯(cuò)

答案:BShadowpriceisactuallyamarginalprice.(）

A:對(duì)

B:錯(cuò)

答案:AIftheprimalproblemoflinearprogrammingaddsaconstraint,itisequivalenttoaddingavariabletothedualproblem.（）

A:錯(cuò)

B:對(duì)

答案:B第四章測(cè)試PleasesolvethefollowingintegerproblemandgetthemaximumZ=().

A:Z=4

B:Z=5

C:Z=3

答案:AAdrillingteamneedstodetermine5explorationwellsfrom10alternativewellstominimizethetotaldrillingcost.If10wellsarerepresentedbys1,s2,…s10,thecostsbeingc1,c2,…c10,oneofconstraintsis:iftheplanchoosess3ors4,thens5cannotbeselectedandviceversa.Weseta0-1variable,xj(j=1,2,…10),thenthisconstraintcanbeexpressed()

A:x3+x5≤1,x4+x5≤1

B:x3+x4+x5≤1

C:x3+x5≥1,x4+x5≥1

D:x3+x5=1,x4+x5=1

答案:ABranch-and-cuttechniqueisonlysuitableforsolvingpureintegerprogrammingproblems.(）

A:對(duì)

B:錯(cuò)

答案:BSimplyroundingoffnon-integersimplexsolutionvaluesformodelsrequiringintegersolutionsisnotalwaysappropriate.Roundingcanoftenleadtosuboptimalresults.(）

A:錯(cuò)

B:對(duì)

答案:BAssignmentproblemdoesn’tbelongto0-1integerprogrammingproblem.(）

A:對(duì)

B:錯(cuò)

答案:B第五章測(cè)試Inthetransportationmodel,thenumberofdemandplacesandsupplyplacesisnandmrespectively.Thenumberofconstraintsis().

A:mn-1

B:m+n-1

C:mn

D:m+n

答案:DTheincorrectstatementoftransportationprobleminthefollowingstatementsis().

A:Itmusthavetheoptimalsolution.

B:Thenumberofconstraintsequalsthenumberofbasevariables.

C:Itcanutilizethetabularmethodtosolve.

D:Itcanutilizethesimplexalgorithmoflinearprogrammingtosolve.

答案:BWhenweadjustthetransportationschemebyclosed-loopmethod,theruleisthatthemaximumvalueoftransportationincreasinginthecellequalstheminimumvalueofthenumeralcelltobereduced,whichisto().

A:makesurethatthebalanceofproductionandsellingcanberealized.

B:makesurethatthefreightcostcanbereducedtoacertainextent.

C:makesurethattheoptimalschemecanberealized.

D:makesurethatthetrafficvolumedoesnotappearnegative.

答案:DAcompanytransportsamaterialfromthreesupplyplacesA1,A2,andA3toB1,B2,andB3.Allinformationoftransportationvolumeislistedasthefollowingtable.Themiddlecellsarethepriceofunittransportationvolume.Fortheoptimalschemeofminimumcost,weutilizethetabularmethodforsolvingitandwecalculatethetestnumberofA2B3thatistheminimumpriceofunitvolumeinnon-basicvariables().

A:2

B:-1

C:1

D:7

答案:BForthetransportationproblemofminimumvalue,theoptimaltransportationschemecanbegainedwhenthetestnumbersarelessthanorequaltozero.(）

A:對(duì)

B:錯(cuò)

答案:B第六章測(cè)試Intermsofgraphtheory,thefollowingstatementisincorrect().

A:Ifatreehasnnodes,thenumberofitsedgesisn-1.

B:Nodesinatreemaynotbeconnectedtoeachother.

C:Ifanedgeisremovedfromatree,thetreewon’tbeconnected.

D:Ifthereisonemoreedgeinthetree,theremustbeacircle.

答案:BThereare()oddverticesinthegraph.

A:1

B:4

C:2

D:3

答案:CInordertogettheminimalspanningtreeofthisgraphbyKruskalAlgorithm,thenumberofremainingedgesis(D),andinascendingorderofweight,weshouldremaintheedge()withtheweightof5inordertoavoidcircle.

A:5;(v3,v4)

B:6;(v2,v3)

C:5;(v2,v3)

D:6;(v1,v4)

答案:CDijkstraalgorithmisonlyusedtocalculatetheshortestroutefromthefirstvertexv1toothervertices.(）

A:錯(cuò)

B:對(duì)

答案:ATheBellmanalgorithmcanbeusedtofindouttheshortestroutefromv1toanyvertex,eventheweightbeingnegative.（）

A:對(duì)

B:錯(cuò)

答案:A第七章測(cè)試IntheGanttcharts,thehorizontalaxisrepresentstimeandtheverticalaxisrepresentseachactivity.（）

A:錯(cuò)

B:對(duì)

答案:BThecriticalactivityincriticalpathis().

A:theendactivity

B:thelongestdurationactivity

C:theearliestbeginningactivity

D:themostimportantactivity

答案:BPleaseindicatethecriticalpathinthefollowingnetwork(everynumberbelowtheactivityrepresentsitsduration).()

A:A→B→E→G

B:A→C→F→G

C:A→B→D→F→G

答案:BAvirtualactivityisusedinanAOAnetworktoshowanactualpassageoftime,notjusttheprecedencerelationship.(）

A:錯(cuò)

B:對(duì)

答案:AWhenwecarryonthecalculationstepsforthelowestcostscheduleinnetworks,nomatterhowweshortenthedurati