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1、Unit5ExercisesⅠComprehensionQuestions1.Howmanykindsofhandlingsystemsareclassifiedinthetext?Handlingsystemscanbeclassifiedasmechanized,semi-automated,automated,andinformation-directed.2.What’sthemostcommonlyusedmechanizedhandlingequipment?Thetypesofequipmentmostcommonlyusedarelifttrucks,w
2、alkie-riderpallettrucks,towlines,tractor-trailerdevices,conveyors,andcarousels.3.Whatistheadvantageoflifttruck?Thelifttruckisnoteconomicalforlong-distancehorizontalmovementbecauseofthehighratiooflaborperunitoftransfer;itismosteffectivelyutilizedinshippingandreceivingandtoplacemerchandise
3、inhighcubestorage.4.Whereisthemostcommonapplicationoftowline?Themostcommonapplicationoftowlinesisfororderselection.5.What’sAGVS,andhowdoesitwork?AnAGVScanbeusedtoreplacemechanizedtowtractorsandtrailers.AGVSequipmenttypicallyreliesonanopticalormagneticguidancesystem.Intheopticalapplicatio
4、ndirectionallinesareplacedonthewarehousefloor.TheAGVSisthenguidedbyalightbeamfocusedontheguidepath.MagneticAGVSsfollowallenergizedwireinstalledwithinthefloor.6.Discusstheadvantageanddisadvantageofconveyors.Inpowersystems,theconveyorispoweredbyadrivechainfromeitheraboveorbelow.Considerabl
5、econveyorflexibilityissacrificedinsuchpowerconfigurationinstallations.Conveyorsareeffectiveinthatonlytheproductismoved,eliminatingtheneedforamovementunittoreturn.ⅡTranslatethefollowingsentencesintoChinese1.Materialshandlingprocessesandtechnologiesimpactproductivitybyinfluencingpersonnel,
6、space,andcapitalequipmentrequirements.Materialshandlingisakeylogisticsactivitythatcan’tbeoverlooked.材料的处理工艺和技术通过影响的人员、空间和资本设备的需求来影响生产力。材料的处理是一个关键的物流活动，是不容忽视的。2.However,specializedhandlingequipmentisrequiredforbulkunloading,suchasforsolids,fluids,pellets(靶丸),orgaseous(气体的、液态的)materials.Bu
7、lkhandlingofsuchmaterialisgenerallycompletedusingpipelinesorconveyors.然而，专门处理设备需要大量卸货，如固体、液体、靶丸、或液态的材料。批量处理这类材料一般是使用管道输送来完成。1.Automatedsystems,incontrast,attempttominimizelaborasmuchaspossiblebysubstitutingequipmentcapitalinvestment.Whenacombinationofmechanicalandautomate
