FundamentalsofForestPro林产化工专业英语智慧树知到答案章节测试2023年

绪论单元测试Generally,gumrosinisproducedbychemicalprocessingofwoodyrawmaterial.A:错B:对答案:A第一章测试Traceelementsareessentialtolife.A:错B:对答案:BElementswithsimilarchemicalpropertiesgenerallyfallintothesamegroupintheperiodictable.A:对B:错答案:AApuresubstancealwayshasthesamephysicalandchemicalpropertiesandiseitheranelementoracompound.A:错B:对答案:BCalciumoxideisaninorganiccompounds.A:对B:错答案:AAnychemicalspeciescapableofbindingtoelectronpairsiscalledaLewisacid;anymoleculethattendstodonateanelectronpairisreferredtoasLewisbase.A:对B:错答案:AIneithercase,thepositionofthemultiplebondisindicatedbynumberingfromtheendofthechain,startingattheendthatwillassignthelowernumbertothefirstcarbonatomofthemultiplebond.A:错B:对答案:BEtherstendtobereactive,andlowmolecularmassethersareoftenusedsolvents.A:对B:错答案:BIfoneorbothofthehydrogenatomsontheamidenitrogenatomarereplacedbyhydrocarbongroups,thestructureisnamedasanN-substitutedamide.A:对B:错答案:ABydoingresearchinchemistry,wecanfindnewcuresfordiseasesaswbetterchemicalstouseinournaturalenvironment.A:错B:对答案:B第二章测试WecaneatordrinkinlaboratoriesA:对B:错答案:BIfaliquidgetsintoyoureyes,theeyeshouldbewashedimmediatelywicleanrunningwaterforatleast10min.A:对B:错答案:AInthecaseoffirealarm,weneedstopallofyourongoingwork,turnandelectricdevices.A:错B:对答案:BThereisnoneedtolabelglassorflaskfilledwithsolution.A:错B:对答案:AIfyouworkwithflammablesolvent,makesurethereisnosourceofignicloseby.A:对B:错答案:A第三章测试Fossilisedbiomasshasbeenexploitedascoalandoil.A:对B:错答案:ATherelativedistributionofphenolicnucleiinligninstronglydiffersbetweenplantspecies.A:对B:错答案:ATheroleofhemicelluloseistomodifyandcrosslinkthebasicfibrilsandpromotetheinteractionbetweenotherbiopolymers.A:错B:对答案:B4.Softwoodsaremainlyvesselmembers,fibres,andparenchyma,andhardwoodsA:对B:错答案:Aaremainlymadeofmadeoftracheidsandparenchyma.5.TheouterA:错B:对答案:Alayer(S1)isthickerthanThemiddlelayer(S2).6.Klasonligninisastandardanalyticalmethodtomeasuretheligninconteoflignocellulosicbiomass.A:错B:对答案:BForesterificationreactionofcellulose,theconversionwaslowandforsilynationreaction,theconversionisgoodbutwithahighcost.A：错B:对答案:BCellulosehasmanyhydroxylgroupswhichcanformhydrogenbondinglinkednetworkeasily.A:错B:对答案:BHighlyporousaerogelsusuallytendtoshowhigheroil-sorptioncapacitiesA:错B:对答案:BStarchonlyhasoneforms,i.e.amylose.A:对B:错答案:BInadditiontoglucomannan,minoramountsofmiscellaneouspolysaccharidesarepresentinhardwoods.A:错B:对答案:AThesofteningtemperature(Ts)ofligninsindrystateishigherthanthatmoistlignins.A:对B:错答案:AThereactivityofligninhasnothingtodowithitssolubility.A:对B:错答案:BLigninmainlyhastwotypesoflinkagesincludingC-CandC-O-C.A:错B:对答案:BThenonb-ondedorbitalinteractions-π(πinteractions)ofthearomaticgroupscouldcausedtheassociationofligninmolecules.A:错B:对答案:BThearomaticmoietiespresentintheligninstructurewillimprovethemechanicalandthermalpropertiesofepoxyresins.A:错B:对答案:BTherearetwodifferenttypesofpolysaccharidehydrolysis,involvingacidic(sulfuricacid)orenzymaticreactions.A:对B:错答案:ATerpeneisderivefroma5Ccompound,isoprene.A:错B:对答案:BPolyphenolsalsocharacteristicallypossessasignificantbindingaffinityforproteins,whichcanleadtotheformationofsolubleandinsolubleproteinpolyphenolcomplexesA:错B:对答案:BCardanoldoublebondmaybeepoxidisedorundergoolefin-metathesisreactionwhichmayactasmodifiedmonomerfortheformationofdifferentsetofpolymers.A:对B:错答案:A第四章测试Sodiumhydroxideandcalciumhydroxidecanbeusedinsteadofpotassiumhydroxidetoneutralizetheacid.A:错B:对答案:BHotairblowsintothisdryertobringthesugarshumidityleveldowntopercent,thatstandardfortablesugar.A:对B:错答案:BThemainresistancetotheflowofheatormasstoasurfacelieswithinlaminarsublayer.A:对B:错答案:A4.Filtercakesareformedlateinthefluidflow.A:错B:对答案:AExtractionmaybeusedtoseparatemorethantwocomponents;andmixturesofsolvents,insteadofasinglesolvent,areneededinsomeapplications.A:错B:对答案:BHeatfluxesmaythenbebasedeitherontheinsideareaortheoutsidethechoiceisarbitrary.A:对B:错答案:AAnyevaporatorthatusespumptoensurehighercirculationvelocityiscalleaforcedcirculationevaporator.A:错B:对答案:BIfthefeedisintroducedatonepointalongthecolumnshell,thecolumndividedintoanuppersection,whichisoftencalledthestrippingsection,alowersection,whichisoftenreferredtoastherectifyingsection.A:错B:对答案:ADryingisanabsolutetermthatmeansacertainvalue.A:错B:对答案:A第五章测试Thetraditionaltechniquesofsolventextractionofplantmaterialsaremostlybasedonthecorrectchoiceofsolventsandtheuseofheator/andagitattoincreasethesolubilityofthedesiredcompoundsandimprovethemasstransfer.A:对B:错答案:ATheyspraytherubbercubeswithamixofcalciumcarbonateandsolventmixtureformsthefilmonthecubesthatpreventsmoldandkeepsthemstickingtogetherduringtransport.A:对B:错答案:ABiomassismostlymadeupofcarbon,hydrogen,compoundsdidnotburncalledash.A:对B:错答案:ABiochemicalapproachesincludethreeunit-operationsnamely,pretreatment,hydrolysis,anddistillation.A:对B:错答案:BFurfuralcanbeproducedbyaone-steporatwo-stepprocess.Theadvantoftheone-stepprocessisthatahigherquantityoffurfuralisproducedcomparedtothetwo-stepprocess.A:对B:错答案:BAwormscrewsupplythemixturetoapressroll,aconstantsprayofwkeepsthemixturefromstickingtoit.A:对B:错答案:AChemicalactivationisusuallycarriedoutatlowertemperatures(from400700℃)wi