Fundamentals of Forest Products Chemical Processing 林产化工专业英语智慧树知到期末考试答案2024年

FundamentalsofForestProductsChemicalProcessing林产化工专业英语智慧树知到期末考试答案2024年FundamentalsofForestProductsChemicalProcessing林产化工专业英语Naturalrubbercomesfromthemilkysapofatropicaltree.

A:正确B:错误答案:正确Furfuralisexclusivelyproducedfromlignocellulosicbiomassbydehydratingpentose.

A:正确B:错误答案:正确Theproductionofnanocellulosecanhelptheissueofgreenhousegasemission.

A:正确B:错误答案:正确Cellulosehydrogelscanbepreparedfromacellulosesolutionthroughphysicalcross-linking.

A:错误B:正确答案:正确Flavonoidsgenerallyoccurinplantsasglycosylatedderivatives.

A:正确B:错误答案:正确Whenheatingaliquidinatest-tube,weneedpointthetest-tubeawayfromotherpeople.

A:正确B:错误答案:正确Onthebasisofthecross-linkingmethod,thehydrogelscanbedividedintochemicalgelsandphysicalgels.

A:错误B:正确答案:正确Thethermochemicalconversionprocessusesheattobreakdownbiomassintointermediates,suchasgasorbio-oilthatcanbeupgradedintofuelandotherproducts.

A:正确B:错误答案:正确Alkanesareunsaturatedhydrocarbons.

A:错误B:正确答案:错误Pretreatmentwithdiluteacidhaslittleeffectonlignin.

A:正确B:错误答案:错误Beforeenteringthepapermachine,waterisaddedtothepulpslurrytomakeathinmixturenormallycontaininglessthan5percentfiber.

A:对B:错答案:错Phosphoricacidcannotbeusedtopreparecrystallinecellulosenanoparticles.

A:正确B:错误答案:错误Thepillsandmedicineweuseareallmadefromchemicals,thataretheretomakeourbodystrongerandtokillvirusesandbacteria.

A:正确B:错误答案:正确Insomecases,momentum,heat,andmasstransferalloccursimultaneously.

A:正确B:错误答案:正确Thebasicflavonoidstructureistheflavannucleus,whichconsistsof15carbonatomsarrangedinthreerings(C6-C3-C6).

A:错误B:正确答案:正确Alcoholsexhibithydrogenbonding.

A:对B:错答案:对Theseparationoperationcalleddistillationutilizesvaporandliquidphasesatessentiallythesametemperatureandpressureforthecoexistingzones.

A:错误B:正确答案:正确AssociationbetweenligninmoleculesincreasedwithincreasingligninconcentrationunderaqueousconditionsofpH13and14.

A:错误B:正确答案:正确Inreactionwithlime,thecolorofthejuicedoesnotchange.

A:正确B:错误答案:错误Momentumtransfertakesplacebetweenthefluidelementswhicharemoving

atdifferentvelocities.

A:错误B:正确答案:正确Intheprocessofliquid-liquidextraction,theliquid-mixturefeedandsolventaremiscible.

A:错误B:正确答案:错误Thecellulosemicrofibrilsonlyhavecrystallineregions.

A:正确B:错误答案:错误Thehydroxylmoietiesonthecellulosechainwerethemainreactivegroups.

A:正确B:错误答案:正确Lignocellulosicbiomasscanbetransformedintobioethanolviatwodifferentapproaches,biochemicalorthermochemicalconversion.

A:错误B:正确答案:正确Inthelaboratory,themostbasicformoffiltrationisusinggravitytofilteramixture.

A:错误B:正确答案:正确Plantoilsaretriglycerides,tri-estersofglycerolwithlongchainfattyacids,withvaryingcompositionoffattyacidsdependingontheplant,thecrop,theseason,andthegrowingconditions.

A:错误B:正确答案:正确Thedegreeofunsaturation,whichcanbeexpressedbytheiodinevalue(amountofiodineingthatcanreactwithdoublebondspresentin100gofsampleunderspecifiedconditions).

A:正确B:错误答案:正确Thebleachingstepisnecessaryinthepulpingandpapermakingprocess.

A:正确B:错误答案:错误Inthepapermakingprocess,thefirststepisrefining.

A:错误B:正确答案:正确ThemassingramofonemoleofacompoundisequaltothemolecularweightofthecompoundinAtomicMassUnits.

A:错误B:正确答案:正确Theperiodictableisjustacommontable.

A:对B:错答案:错Hydrothermalmodificationwasuniversallyusedforlignindegradation.Frequently,somewaterwasaddedtomakethesystemmorehomogeneous.

A:正确B:错误答案:错Whentwoobjectsatdifferenttemperaturesarebroughtintothermalcontact,heatflowsfromtheobjectatthehighertemperaturetothatatthelowertemperature.

A:错误B:正确答案:正确Acombustionreactionisanendothermicreaction.

A:错误B:正确答案:错误Esterificationispossiblytheeasiestofthereactionstoproducelignin-basedpolyestersthatinvolvethehydroxylgroupsoflignin.

A:错误B:正确答案:正确Hemicelluloseandcellulosefollowthesamebiosyntheticroutes.

A:正确B:错误答案:正确Modificationsonhydroxylgroupscanleadtotheformationofpolyolderivativesoflignin.

A:错误B:正确答案:正确Biochemicalpretreatmentismainlyusedtoovercomerecalcitrantmaterialandincreasesurfaceareatooptimizecelluloseaccessibilitytocellulases.

A:正确B:错误答案:正确Itisclearthatgoodyieldandhighpurityareimportantobjectivesinoperatingacrystallizationprocess,butthesetwofactorsa