供应链管理第三版Unit1习题与答案_第1页
供应链管理第三版Unit1习题与答案_第2页
供应链管理第三版Unit1习题与答案_第3页
供应链管理第三版Unit1习题与答案_第4页
供应链管理第三版Unit1习题与答案_第5页
已阅读5页,还剩24页未读 继续免费阅读

下载本文档

版权说明:本文档由用户提供并上传,收益归属内容提供方,若内容存在侵权,请进行举报或认领

文档简介

Chapter1

UnderstandingtheSupplyChain

True/False

1.

2.

3.

4.

5.

6.

7.

8.

Asupplychainincludesonlytheorganizationsdirectlyinvolvedin

supplyingcomponentsneededformanufacturing.

Answer:False

Difficulty:Moderate

Asupplychainconsistsofallpartiesinvolved,directlyorindirectly,infulfilling

acustomerrequest.

Answer:True

Difficulty:Moderate

Asupplychaincouldbemoreaccuratelydescribedasasupplynetworkor

supplyweb.

Answer:True

Difficulty:Moderate

Theobjectiveofeverysupplychainistomaximizetheoverallvaluegenerated.

Answer:True

Difficulty:Easy

Theobjectiveofeverysupplychainistomaximizethevaluegeneratedfor

themanufacturingcomponentofthesupplychain.

Answer:False

Difficulty:Moderate

Everysupplychainmustincludeall5stages.

Answer:False

Difficulty:Easy

Thecycleviewofasupplychainholdsthattheprocessesinasupplychainare

dividedintoaseriesofactivitiesperformedattheinterfacebetween

successivestages.

Answer:True

Difficulty:Moderate

Thecycleviewofasupplychainholdsthattheprocessesinasupplychainare

dividedinto2categoriesdependingonwhethertheyareinitiatedinresponse

toorinanticipationofcustomerorders.

Answer:False

Difficulty:Moderate

9.Thepush/pullviewofasupplychainholdsthattheprocessesinasupplychainaredividedinto2categoriesdependingonwhethertheyareinitiatedinresponsetoorinanticipationofcustomerorders.

Answer:True

Difficulty:Easy

10.Thepush/pullviewofasupplychainholdsthattheprocessesinasupplychainaredividedintoaseriesofactivitiesperformedattheinterfacebetweensuccessivestages.

Answer:False

Difficulty:Easy

11.Theobjectiveofthecustomerarrivalprocessistomaximizetheconversionofcustomerarrivalstocustomerorders.

Answer:True

Difficulty:Moderate

12.Theobjectiveofthecustomerarrivalprocessistoensurethatordersarequicklyandaccuratelyenteredandcommunicatedtootheraffectedsupplychainprocesses.

Answer:False

Difficulty:Moderate

13.Theobjectiveofcustomerorderentryistoensurethatordersarequicklyandaccuratelyenteredandcommunicatedtootheraffectedsupplychainprocesses.Answer:True

Difficulty:Moderate

14.Theobjectiveofcustomerorderentryistomaintainarecordofproductreceiptandcompletepayment.

Answer:False

Difficulty:Hard

15.Thereplenishmentcycleoccursattheretailer/distributorinterface.

Answer:True

Difficulty:Hard

16.Thereplenishmentcycleoccursatthedistributor/manufacturerinterface.

Answer:False

Difficulty:Hard

17.Thereplenishmentcycleisinitiatedwhenasupermarketrunsoutofstockofaparticularitem.

Answer:True

Difficulty:Hard

18.Thereplenishmentcycleisinitiatedwhencustomersloaditemsintendedforpurchaseintotheircarts.

Answer:False

Difficulty:Hard

19.Themanufacturingcycleoccursatthedistributor/manufacturerinterface.

Answer:True

Difficulty:Moderate

20.Themanufacturingcycleoccursatthemanufacturer/supplierinterface.

Answer:False

Difficulty:Moderate

21.Theproductionschedulingprocessinthemanufacturingcycleissimilartotheorderentryprocessinthereplenishmentcycle.

Answer:True

Difficulty:Hard

22.Theproductionschedulingprocessinthemanufacturingcycleissimilartotheorderfulfillmentprocessinthereplenishmentcycle.

Answer:False

Difficulty:Hard

23.Theprocurementcycleoccursatthemanufacturer/supplierinterface.

Answer:True

Difficulty:Easy

24.Theprocurementcycleoccursattheretailer/distributorinterface.

Answer:False

Difficulty:Easy

25.Thecycleviewofthesupplychainisusefulwhenconsideringoperationaldecisions,becauseitspecifiestherolesandresponsibilitiesofeachmemberofthesupplychain.

Answer:True

Difficulty:Moderate

26.Thecycleviewofthesupplychainisusefulwhenconsideringoperationaldecisions,becauseitcategorizesprocessesbasedonwhethertheyareinitiatedinresponsetoorinanticipationofcustomerorders.

Answer:False

Difficulty:Moderate

27.Thepush/pullviewofthesupplychainisusefulwhenconsideringstrategic

decisionsrelatingtosupplychaindesign,becauseitcategorizesprocesses

basedonwhethertheyareinitiatedinresponsetoorinanticipationofcustomer

orders.

Answer:True

Difficulty:Moderate

28.Thepush/pullviewofthesupplychainisusefulwhenconsideringstrategicdecisionsrelatingtosupplychaindesign,becauseitspecifiestherolesandresponsibilitiesofeachmemberofthesupplychain.

Answer:False

Difficulty:Moderate

–CRM,

29.Pullprocessesmayalsobereferredtoasreactiveprocesses.

Answer:True

Difficulty:Easy

30.Pullprocessesmayalsobereferredtoasspeculativeprocesses.

Answer:False

Difficulty:Easy

31.Pushprocessesmayalsobereferredtoasspeculativeprocesses.

Answer:True

Difficulty:Easy

32.Pushprocessesmayalsobereferredtoasreactiveprocesses.

Answer:False

Difficulty:Easy

33.AllsupplychainactivitieswithinafirmbelongtooneofthreemacroprocessesISCMandSRM.

Answer:True

Difficulty:Easy

34.Thereisacloseconnectionbetweenthedesignandmanagementofsupplychainflowsandthesuccessofasupplychain.

Answer:True

Difficulty:Easy

MultipleChoice

1.

2.

Whichofthefollowingisnotastagewithinatypicalsupplychain?

Customers

Retailers

Wholesalers/Distributors

Manufacturers

Alloftheabovearestageswithinatypical

supplychain.

a.

b.

c.

d.

e.

Answer:e

Difficulty:Easy

Whichofthefollowingisnotastagewithinatypicalsupplychain?

a.Customers

b.Retailers

c.Wholesalers/Distributors

d.Merchandisers

e.Component/Rawmaterialsuppliers

Answer:d

Difficulty:Easy

3.

4.

5.

6.

7.

Supplychainprofitabilityis

a

.

b.

c.

d.

e.

notcorrelatedtothevaluegeneratedbythevariousstagesofthesupplychain.

thetotalprofittobesharedacrossallsupplychainstages.thedifferencebetweentherevenuegeneratedfromthecustomerandtheoverallcostacrossthesupplychain.

thetotalrevenuegeneratedbythedistributorstageofthesupplychain.bandconly

Answer:e

Difficulty:Difficult

Successfulsupplychainmanagementrequireswhichofthefollowing

decisionphases?

a.

b.

c.

d.

e.

supplychainstrategy/designsupplychainplanningsupplychainoperationalloftheabove

aandbonly

Answer:d

Difficulty:Moderate

Thedecisionphasesinasupplychaininclude

a.

b.

c.

d.

e.

productionscheduling.

customerrelationshipmanagement.supplychainoperation.

supplychainorientation.

alloftheabove

Answer:c

Difficulty:Moderate

Thecycleviewofasupplychainholdsthat

a

.

b.

c.

d.

e.

theprocessesinasupplychainaredividedinto2categories.theprocessesinasupplychainaredividedintoaseriesofactivitiesperformedattheinterfacebetweensuccessivestages.allprocessesinasupplychainareinitiatedinresponsetoacustomerorder.

allprocessesinasupplychainareperformedinanticipationofcustomerorders.

Noneoftheabovearetrue.

Answer:b

Difficulty:Moderate

Thepush/pullviewofasupplychainholdsthat

theprocessesinasupplychainaredividedintoaseriesofactivitiesperformedattheinterfacebetweensuccessivestages.allprocessesinasupplychainareinitiatedinresponsetoacustomerorder.

allresponseinasupplychainareperformedinanticipationofcustomerorders.

a.

b.

c.

d

.

e

.

theprocessesinasupplychainaredividedinto2categoriesdepending

onwhethertheyareinitiatedinresponsetoorinanticipationofcustomer

orders.

Noneoftheabovearetrue.

Answer:d

Difficulty:Moderate

8.Whichofthefollowingisnotacycleinthesupplychaincycleview?

a.Analysiscycle

b.Customerordercycle

c.Replenishmentcycle

d.Manufacturingcycle

e.ProcurementcycleAnswer:aDifficulty:Moderate

9.Whichofthefollowingisnotacycleinthesupplychaincycleview?

a.Customerordercycle

b.Replenishmentcycle

c.Manufacturingcycle

d.Procurementcycle

e.Alloftheabovearepartofthesupplychaincycleview.Answer:e

Difficulty:Moderate

10.Thecustomerordercycleoccursatthe

a.customer/retailerinterface.

b.retailer/distributorinterface.

c.distributor/manufacturerinterface.

d.manufacturer/supplierinterface.

e.noneoftheabove

Answer:a

Difficulty:Easy

11.Whichofthefollowingisnotaprocessinthecustomerordercycle?

a.Customerarrival

b.Customerqualification

c.Customerorderentry

d.Customerorderfulfillment

e.CustomerorderreceivingAnswer:b

Difficulty:Moderate

12.Customerarrivalrefersto

a.thepointintimewhenthecustomerhasaccesstochoicesandmakesadecisionregardingapurchase.

b.thecustomerinformingtheretailerofwhattheywanttopurchaseandtheretailerallocatingproducttothecustomer.

c.theprocesswhereproductispreparedandsenttothecustomer.

d.theprocesswherethecustomerreceivestheproductand

takesownership.

e.noneoftheaboveAnswer:aDifficulty:Moderate

13.Theobjectiveofthecustomerarrivalprocessisto

a.getthecorrectorderstocustomersbythepromisedduedateatthelowestpossiblecost.

b.maintainarecordofproductreceiptandcompletepayment.

c.maximizetheconversionofcustomerarrivalstocustomerorders.

d.ensurethatordersarequicklyandaccuratelyenteredandcommunicatedtootheraffectedsupplychainprocesses.

e.noneoftheaboveAnswer:c

Difficulty:Easy

14.Customerorderentryis

a.thepointintimewhenthecustomerhasaccesstochoicesandmakesadecisionregardingapurchase.

b.thecustomerinformingtheretailerofwhattheywanttopurchaseandtheretailerallocatingproducttothecustomer.

c.theprocesswhereproductispreparedandsenttothecustomer.

d.theprocesswherethecustomerreceivestheproductand

takesownership.

e.noneoftheabove

Answer:b

Difficulty:Moderate

15.Theobjectiveofcustomerorderentryisto

a.getthecorrectorderstocustomersbythepromisedduedateatthelowestpossiblecost.

b.maintainarecordofproductreceiptandcompletepayment.

c.maximizetheconversionofcustomerarrivalstocustomerorders.

d.ensurethatordersarequicklyandaccuratelyenteredandcommunicatedtootheraffectedsupplychainprocesses.

e.noneoftheaboveAnswer:d

Difficulty:Easy

16.Customerorderfulfillmentrefersto

a.thepointintimewhenthecustomerhasaccesstochoicesandmakesadecisionregardingapurchase.

b.thecustomerinformingtheretailerofwhattheywanttopurchaseandtheretailerallocatingproducttothecustomer.

c.theprocesswhereproductispreparedandsenttothecustomer.

d.theprocesswherethecustomerreceivestheproductand

takesownership.

e.noneoftheabove

Answer:c

Difficulty:Moderate

17.Theobjectiveofcustomerorderfulfillmentisto

a.getthecorrectorderstocustomersbythepromisedduedateatthelowestpossiblecost.

b.maintainarecordofproductreceiptandcompletepayment.

c.maximizetheconversionofcustomerarrivalstocustomerorders.

d.ensurethatordersarequicklyandaccuratelyenteredandcommunicatedtootheraffectedsupplychainprocesses.

e.noneoftheaboveAnswer:a

Difficulty:Easy

18.Customerorderreceivingis

a.thepointintimewhenthecustomerhasaccesstochoicesandmakesadecisionregardingapurchase.

b.thecustomerinformingtheretailerofwhattheywanttopurchaseandtheretailerallocatesproducttothecustomer.

c.theprocesswhereproductispreparedandsenttothecustomer.

d.theprocesswherethecustomerreceivestheproductand

takesownership.

e.noneoftheabove

Answer:d

Difficulty:Moderate

19.Thereplenishmentcycleoccursatthe

a.customer/retailerinterface.

b.retailer/distributorinterface.

c.distributor/manufacturerinterface.

d.manufacturer/supplierinterface.

e.noneoftheabove

Answer:b

Difficulty:Easy

20.Theprocessesinvolvedinthereplenishmentcycleinclude

a.retailorderreceiving.

b.retailorderentry.

c.retailordertrigger.

d.retailorderfulfillment.

e.alloftheaboveAnswer:e

Difficulty:Moderate

21.Theprocessesincludedinthereplenishmentcycleincludeallofthefollowingexcept

a.retailorderreceiving.

b.retailorderentry.

c.retailordertrigger.

d.retailorderfulfillment.

e.noneoftheaboveAnswer:e

Difficulty:Moderate

22.Theprocessesincludedinthereplenishmentcycleinclude

a.orderarrival.

ductionscheduling.

c.retailtrigger.

d.manufacturing.

e.receiving.

Answer:c

Difficulty:Moderate

23.Thereplenishmentcycleisinitiatedwhen

a.thecustomerwalksintothesupermarket.

b.thecustomercallsamailordertelemarketingcenter.

c.customersloaditemsintendedforpurchaseintotheircarts.

d.asupermarketrunsoutofstockofaparticularitem.

e.aproductisreceivedintostockatastore.

Answer:d

Difficulty:Hard

24.Themanufacturingcycleoccursatthe

a.customer/retailerinterface.

b.retailer/distributorinterface.

c.distributor/manufacturerinterface.

d.manufacturer/supplierinterface.

e.noneoftheabove

Answer:c

Difficulty:Easy

25.Theprocessesinvolvedinthemanufacturingcycleinclude

a.receiving.

b.manufacturingandshipping.

ductionscheduling.

d.orderarrival.

e.alloftheabove

Answer:e

Difficulty:Moderate

26.Theprocessesinvolvedinthemanufacturingcycleinclude

a.ordertrigger.

ductionscheduling.

c.orderfulfillment.

d.orderentry.

e.manufacturingorderanalysis.Answer:b

Difficulty:Moderate

27.Theproductionschedulingprocessinthemanufacturingcycleissimilartothe

a.orderreceivingprocessinthereplenishmentcycle.

b.orderfulfillmentprocessinthereplenishmentcycle.

c.orderentryprocessinthereplenishmentcycle.

d.ordertriggerprocessinthereplenishmentcycle.

e.noneoftheabove

Answer:c

Difficulty:Hard

28.Themanufacturingandshippingprocessinthemanufacturingcycleisequivalenttothe

a.orderreceivingprocessinthereplenishmentcycle.

b.orderfulfillmentprocessinthereplenishmentcycle.

c.orderentryprocessinthereplenishmentcycle.

d.ordertriggerprocessinthereplenishmentcycle.

e.noneoftheabove

Answer:b

Difficulty:Hard

29.Theprocurementcycleoccursatthe

a.customer/retailerinterface.

b.retailer/distributorinterface.

c.distributor/manufacturerinterface.

d.manufacturer/supplierinterface.

e.noneoftheabove

Answer:d

Difficulty:Easy

30.Therelationshipbetweenthemanufacturerandsupplierduringtheprocurementcycleisverysimilartotherelationshipbetween

a.customerandretailer.

b.retaileranddistributor.

c.retailerandmanufacturer.

d.distributorandmanufacturer.

e.manufacturerandcustomer.Answer:d

Difficulty:Moderate

31.Thecycleviewofthesupplychainisusefulwhenconsideringoperationaldecisions,because

a.itcategorizesprocessesbasedonwhethertheyareinitiatedinresponsetoorinanticipationofcustomerorders.

b.itspecifiestherolesandresponsibilitiesofeachmemberofthesupplychain.

cessesareidentifiedaseitherreactiveorspeculative.

d.itfocusesonprocessesthatareexternaltothefirm.

e.itfocusesonprocessesthatareinternaltothefirm.Answer:b

Difficulty:Hard

32.Thepush/pullviewofthesupplychainisusefulwhenconsideringstrategicdecisionsrelatingtosupplychaindesign,because

a.itcategorizesprocessesbasedonwhethertheyareinitiatedinresponsetoorinanticipationofcustomerorders.

b.itspecifiestherolesandresponsibilitiesofeachmemberofthesupplychain.

c.itclearlydefinestheprocessesinvolvedandtheownersofeachprocess.

d.

e.

itfocusesonprocessesthatareexternaltothefirm.

itfocusesonprocessesthatareinternaltothefirm.

Answer:a

Difficulty:Hard

33.Whichofthefollowingstatementsaboutpullprocessesisaccurate?

a.Mayalsobereferredtoasspeculativeprocesses.

b.Executionisinitiatedinanticipationofcustomerorders.

c.Atthetimeofexecution,demandmustbeforecast.

d.Mayalsobereferredtoasreactiveprocesses.

e.Noneoftheaboveareaccurate.

Answer:d

Difficulty:Easy

34.Whichofthefollowingisnotanaccuratestatementaboutpullprocesses?

a.Mayalsobereferredtoasspeculativeprocesses.

b.Executionisinitiatedinresponsetoacustomerorder.

c.Atthetimeofexecution,demandisknownwithcertainty.

d.Mayalsobereferredtoasreactiveprocesses.

e.Alloftheaboveareaccurate.

Answer:a

Difficulty:Easy

35.Whichofthefollowingstatementsaboutpushprocessesisaccurate?

a.Mayalsobereferredtoasspeculativeprocesses.

b.Executionisinitiatedinresponsetocustomerorders.

c.Atthetimeofexecution,demandisknownwithcertainty.

d.Mayalsobereferredtoasreactiveprocesses.

e.Noneoftheaboveareaccurate.

Answer:a

Difficulty:Easy

36.Whichofthefollowingisnotanaccuratestatementaboutpushprocesses?

a.Mayalsobereferredtoasspeculativeprocesses.

b.Executionisinitiatedinanticipationofcustomerorders.

c.Atthetimeofexecution,demandmustbeforecast.

d.Mayalsobereferredtoasreactiveprocesses.

e.Alloftheaboveareaccurate.

Answer:d

Difficulty:Easy

37.Supplychainmacroprocessesincludewhichofthefollowing?

a.CustomerRelationshipManagement(CRM)

b.InternalSupplyChainManagement(ISCM)

c.SupplierRelationshipManagement(SRM)

d.alloftheabove

e.noneoftheabove

Answer:d

Difficulty:Easy

38.Supplychainmacroprocessesincludewhichofthefollowing?

a.

b.

c.

d.

e.

InternalRelationshipManagement(IRM)

CustomerRelationshipManagement(CRM)

ExternalRelationshipManagement(ERM)

SupplyChainRelationshipManagement(SCRM)

noneoftheabove

Answer:b

Difficulty:Moderate

39.Supplychainmacroprocessesincludewhichofthefollowing?

a.InternalRelationshipManagement(IRM)

b.ExternalRelationshipManagement(ERM)

c.SupplierRelationshipManagement(SRM)

d.SupplyChainRelationshipManagement(SCRM)

e.noneoftheabove

Answer:c

Difficulty:Moderate

40.ActivitiesinvolvedintheCustomerRelationshipManagement(CRM)macroprocessinclude

a.planningofinternalproductionandstorage.

b.orderfulfillment.

c.marketing.

d.supplyplanning.

e.demandplanning.

Answer:c

Difficulty:Hard

41.ActivitiesinvolvedintheCustomerRelationshipManagement(CRM)macroprocessincludeallofthefollowingexcept

a.demandplanning.

b.marketing.

c.sales.

d.ordermanagement.

e.callcentermanagement.Answer:a

Difficulty:Hard

42.ActivitiesinvolvedintheInternalSupplyChainManagement(ISCM)macroprocessinclude

a.marketing.

b.orderfulfillment.

c.sales.

d.ordermanagement.

e.callcentermanagement.Answer:b

Difficulty:Hard

43.ActivitiesinvolvedintheInternalSupplyChainManagement(ISCM)macroprocessincludeallofthefollowingexcept

a.planningofinternalproductionandstorage.

b.orderfulfillment.

c.d.e.

supplyplanning.

demandplanning.

ordermanagement.

Answer:e

Difficulty:Hard

44.ActivitiesinvolvedintheSupplierRelationshipManagement(SRM)macroprocessinclude

a.planningofinternalproductionandstorage.

b.orderfulfillment.

c.supplyplanning.

d.supplierevaluationandselection.

e.ordermanagement.

Answer:d

Difficulty:Moderate

45.ActivitiesinvolvedintheSupplierRelationshipManagement(SRM)macroprocessincludeallofthefollowingexcept

a.negotiationofsupplyterms.

b.designcollaboration.

c.supplyplanning.

d.supplierevaluationandselection.

e.supplycollaboration.

Answer:c

Difficulty:Hard

46.Thephenomenalsuccessof7-ElevenJapanisattributedto

a.beingintherightplaceattherighttime.

b.itssupplychaindesignandmanagementability.

c.having9000locations.

d.servingfreshfood.

e.noneoftheabove

Answer:b

Difficulty:Moderate

47.AkeyissuefacingToyotais

a.developinganinternetmarketingsystem.

b.whethertospecializeinaparticularmarket.

c.designofitsglobalproductionanddistributionnetwork.

d.howtoimplementmodelchanges.

e.alloftheabove

Answer:c

Difficulty:Hard

Essay/Problems

1.Explainthe3decisionphases(categories)thatmustbemadeinasuccessfulsupplychain.

2.

3.

4.

Answer:The3decisionphasesthatoccurwithinasupplychainaresupplychain

strategy(ordesign),supplychainplanningandsupplychainoperation.Decisions

relatetotheflowofinformation,productandfunds.Thedifferencebetween

categoriesdependsuponthefrequencyofeachdecisionandthetimeframeover

whichithasanimpact.Duringthesupplychainstrategyphase,acompany

determineswhatthechain’sconfigurationswillbe,howresourceswillbe

allocated,andwhatprocesseseachstagewillperform.Thiswillestablishthe

structureofthesupplychainforseveralyears.Supplychainplanningdealswith

decisionswithatimeframefrom3monthsuptoayear.Theplanningphase

mustworkwithintheconstraintsestablishedinthestrategyphase.Planning

decisionsincludewhichmarketstosupplyfromwhichlocations,subcontracting

ofmanufacturing,inventorypoliciesandtimingandsizeofmarketingpromotions.

Thesupplychainoperationphaseoperatesonaweeklyordailytimehorizonand

dealswithdecisionsconcerningindividualcustomerorders.

Difficulty:Hard

Describethecycleviewoftheprocesseswithinasupplychain.

Answer:Thecycleviewdividesthesupplychainintoaseriesof4cycles

betweenthe5differentstagesofasupplychain.Thecyclesarethecustomer

ordercycle,replenishmentcycle,manufacturingcycleandprocurementcycle.

Thecustomerordercycleoccursatthecustomer/retailerinterfaceandincludes

allprocessesdirectlyinvolvedinreceivingandfillingthecustomer.The

replenishmentcycleoccursat

温馨提示

  • 1. 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。图纸软件为CAD,CAXA,PROE,UG,SolidWorks等.压缩文件请下载最新的WinRAR软件解压。
  • 2. 本站的文档不包含任何第三方提供的附件图纸等,如果需要附件,请联系上传者。文件的所有权益归上传用户所有。
  • 3. 本站RAR压缩包中若带图纸,网页内容里面会有图纸预览,若没有图纸预览就没有图纸。
  • 4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
  • 5. 人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对用户上传分享的文档内容本身不做任何修改或编辑,并不能对任何下载内容负责。
  • 6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
  • 7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

评论

0/150

提交评论