在线网课知道《Data,Model and Decision（华南理大）》单元测试考核答案

第一章单元测试1【单选题】(2分)Thepurposeofbreak-evenanalysisistodeterminethenumberofunitsofaproducttosellorproducethatwillequatetotalrevenuewithtotalcost.Atthebreak-evenpoint,theprofitis()zero.A.equaltoB.morethanC.lessthan2【单选题】(2分)Ingeneral,anincreaseinvariablecostswill（）thebreak-evenpoint,allotherthingsheldconstant.A.decreaseB.increaseC.notchange3.【多选题】正确答案：ABCDIt’simportanttomakefulluseoftechniquesinmanagementscienceprocess,whichtechniquesarecommonlyusedforthepurposeofdecision-making（）?A.LinearprogrammingmodelsB.TransportationandassignmentC.Projectmanagement(likeCPM/PERT)D.Decisionanalysis4【判断题】Manufacturingcompaniesdeveloplinearprogrammingmodelstohelpdecidehowmanyunitsofdifferentproductstheyshouldproducetomaximizetheirprofit(orminimizetheircost),givenscarceresourcessuchascapital,labor,andfacilities.(）A.错B.对第二章单元测试1【单选题】(2分)Ifthegraphicalmethodisusedtosolvethelinearprogrammingproblem,thenumberofdecisionvariablesshouldbe().A.≥3B.≤5C.2D.Nolimitation2【单选题】(2分)Inthelinearprogrammingmodel,()restrictthedecisionvariablestozeroorpositiveA.NonnegativityconstraintsB.ResourcerequirementsC.ThefeaturesofvariablesD.Objectivefunction3【单选题】(2分)Iftheoptimalsolutionofthelinearprogrammingproblemisreachedattwoverticesoffeasibledomainatthesametime,thentheoptimalsolutionhas().A.AlinesegmentconnectingtwoverticesB.TwosolutionsC.AstraightlineconnectingtwoverticesD.It’simpossible4【单选题】(2分)ThefollowingfeaturesofstandardformofLinearprogrammingarecorrect（）.A.ThedecisionvariablesarenotequaltozeroB.NoneofaboveistrueC.ThedecisionvariablesarenonnegativeD.Thereisnolimittothesymbolofdecisionvariables5【判断题】Theoptimalsolutionofthelinearprogrammingproblemmustbethefeasiblesolution.（）A.错B.对第三章单元测试1【单选题】(2分)Giventhatalinearprogrammingproblemisasfollowing,theoptimalsolutionofdualproblemis().A.Y=(4/5,3/5,1,0)B.Y=(1,0,3/5,4/5)C.Y=(0,3/5,4/5,1)D.Y=(0,3/5,1,4/5)2【单选题】(2分)Thefollowingstatementsof100%ruleofobjectivefunctioncoefficientiscorrect（）.A.Onlycanincreasingcoefficientsfollowthis100%rule.B.Noneofaboveiscorrect.C.Thesumofallchangedcoefficientspercentagesofallowableincreaseandallowabledecreaseequals100%,theoptimalsolutionwon’tchange.D.Thesumofallchangedcoefficientspercentagesofallowableincreaseandallowabledecreasedoesnotreach100%,theoptimalsolutionwon’tchange.3【判断题】Thedualityofadualproblemisnotnecessarilytheprimalproblem.(）A.对B.错4【判断题】Shadowpriceisactuallyamarginalprice.(）A.对B.错5【判断题】Iftheprimalproblemoflinearprogrammingaddsaconstraint,itisequivalenttoaddingavariabletothedualproblem.（）A.错B.对第四章单元测试1【单选题】(2分)PleasesolvethefollowingintegerproblemandgetthemaximumZ=().A.Z=3B.Z=5C.Z=42【单选题】(2分)Adrillingteamneedstodetermine5explorationwellsfrom10alternativewellstominimizethetotaldrillingcost.If10wellsarerepresentedbys1,s2,…s10,thecostsbeingc1,c2,…c10,oneofconstraintsis:iftheplanchoosess3ors4,thens5cannotbeselectedandviceversa.Weseta0-1variable,xj(j=1,2,…10),thenthisconstraintcanbeexpressed()A.x3+x5≥1,x4+x5≥1B.x3+x4+x5≤1C.x3+x5≤1,x4+x5≤1D.x3+x5=1,x4+x5=13【判断题】Branch-and-cuttechniqueisonlysuitableforsolvingpureintegerprogrammingproblems.(）A.错B.对4【判断题】Simplyroundingoffnon-integersimplexsolutionA.错B.对5【判断题】Assignmentproblemdoesn’tbelongto0-1integerprogrammingproblem.(）A.错B.对第五章单元测试1【单选题】(2分)Inthetransportationmodel,thenumberofdemandplacesandsupplyplacesisnandmrespectively.Thenumberofconstraintsis().A.m*nB.m+nC.m*n-1D.m+n-12【单选题】(2分)Theincorrectstatementoftransportationprobleminthefollowingstatementsis().A.Thenumberofconstraintsequalsthenumberofbasevariables.B.Itcanutilizethetabularmethodtosolve.C.Itmusthavetheoptimalsolution.D.Itcanutilizethesimplexalgorithmoflinearprogrammingtosolve.3【单选题】(2分)Whenweadjustthetransportationschemebyclosed-loopmethod,theruleisthatthemaximumA.makesurethatthetrafficvolumedoesnotappearnegative.B.makesurethattheoptimalschemecanberealized.C.makesurethatthefreightcostcanbereducedtoacertainextent.D.makesurethatthebalanceofproductionandsellingcanberealized.4【单选题】(2分)AcompanytransportsamaterialfromthreesupplyplacesA1,A2,andA3toB1,B2,andB3.Allinformationoftransportationvolumeislistedasthefollowingtable.Themiddlecellsarethepriceofunittransportationvolume.Fortheoptimalschemeofminimumcost,weutilizethetabularmethodforsolvingitandwecalculatethetestnumberofA2B3thatistheminimumpriceofunitvolumeinnon-basicvariables().A.-1B.1C.2D.75【判断题】ForthetransportationproblemofminimumA.错B.对第六章单元测试1【单选题】(2分)Intermsofgraphtheory,thefollowingstatementisincorrect().A.Ifanedgeisremovedfromatree,thetreewon’tbeconnected.B.Nodesinatreemaynotbeconnectedtoeachother.C.Ifthereisonemoreedgeinthetree,theremustbeacircle.D.Ifatreehasnnodes,thenumberofitsedgesisn-1.2【单选题】(2分)Thereare()oddverticesinthegraph.A.4B.3C.1D.23【单选题】(2分)InordertogettheminimalspanningtreeofthisgraphbyKruskalAlgorithm,thenumberofremainingedgesis(D),andinascendingorderofweight,weshouldremaintheedge()withtheweightof5inordertoavoidcircle.A.5;(v3,v4)B.6;(v2,v3)C.5;(v2,v3)D.6;(v1,v4)4【判断题】Dijkstraalgorithmisonlyusedtocalculatetheshortestroutefromthefirstvertexv1toothervertices.(）A.错B.对5【判断题】TheBellmanalgorithmcanbeusedtofindouttheshortestroutefromv1toanyvertex,eventheweightbeingnegative.（）A.错B.对第七章单元测试1【判断题】IntheGanttcharts,thehorizontalaxisrepresentstimeandtheverticalaxisrepresentseachactivity.（）A.错B.对2【单选题】(2分)Thecriticalactivityincriticalpathis().A.thelongestdurationactivityB.themostimportantactivityC.theearliestbeginningactivityD.theendactivity3【单选题】(2分)Pleaseindicatethecriticalpathinthefollowingnetwork(everynumberbelowtheactivityrepresentsitsduration).()A.A→B→D→F→GB.A→C→F→GC.A→B→E→G4【判断题】AvirtualactivityisusedinanAOAnetworktoshowanactualpassageoftime,notjusttheprecedencerelationship.(）A.对B.错5【判断题】Whenwecarryonthecalculationstepsforthelowestcostscheduleinnetworks,nomatterhowweshortenthedurationofactivities,thecritic