电厂锅炉及设备（power plant boilers and equipment）

《电厂锅炉及设备（power plant boilers and equipment）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、电厂锅炉及设备（Powerplantboilersandequipment）ThefirstchapterRead[242]timesaltogether1.Accordingtoboilercapacity:De=670t/hboilerforwhichmodel()A.largeb.mediumc.smalld.largeAnswer:B2.Accordingtothesteamparameters:thepressuretypeoftheboilerunderp=20MPais()A.highpressureb.highpressurec.subcriticald.sup

2、ercriticalAnswer:CAccordingtothecirculationoftheworkquality:thetype()oftheboilerwhichisalways1.A.DirectcurrentboilerB.NaturalcirculationboilerC.ForcedcirculationfurnaceD.CompoundcirculatingfurnaceAnswer:A,4.Whichofthefollowingdevicesdoesnotbelongtotheheatingsurface()A.AirpreheaterB.Economize

3、rC.ReheaterD.DrumorsodaseparatorAnswer:D5.Themainformofboilersforlargecoal-firedpowerplantsis()A.floorcombustionfurnacec.cyclonefurnaced.fluidizedbedboilerAnswer:B6.Continuousoperationhoursrefersto()A.thenumberofhoursofoperationoftheboilerwhenitisfinishedinthefirststopC.thenumberofhoursofope

4、rationbetweenthetwoaccidentsAnswer:D7.Thepowerofthedcboilerworkingcycleis()A.ThedensitydifferencebetweenthedowndrafttubeandtheevaporationtubeC.PumpD.CirculatingpumpsandpumpsAnswer:C8.Whichofthefollowingdevicesdoesnotbelongtotheboilersection()A.SteampackB.EconomizerC.AirpreheaterDAnswer:D9.Th

5、ethreemainenginesofcoal-firedpowerplantsarenotincluded()A.coalmillb.steamturbinec.generatord.boilerAnswer:A,10.Intheprocessofconvertingthechemicalenergyofcoalintosteam,thefollowingsystem()isnotinvolved.A.condensatesystemb.smokesystemC.SodasystemD.CombustionsystemAnswer:A,ThesecondchapterRead

6、[183]timesaltogether1.Uniformregulation,tothelowheatof29310kJ/kgfuelforstandardcoalA.drybasisb.drybasisd.airdryingbaseAnswer:B2.Commonlyusedtoindicatetheanalysisofthevolatilecontentofcoalis().A.drybasisb.drybasisd.airdryingbaseAnswer:C3.Themeltingpropertiesofgrayaregenerallyrepresentedby()A.

7、deformationtemperatureb.softeningtemperaturec.flowtemperatured.meltingtemperatureAnswer:B4.Whichofthefollowingcoalhasthehighestvolatilecontent()A.AnthraciteB.PoorcoalC.LigniteD.BituminouscoalAnswer:C5.Whichofthefollowingcoalhasthehighestcarbonconte