2023年全國碩士研究生考試考研英語一試題真題（含答案詳解+作文范文）_第1頁
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1、Designation:D2274?14Designation:388?97StardTestMethodfOxidationStabilityofDistillateFuelOil(AcceleratedMethod)1ThisstardisissuedunderthefixeddesignationD2274thenumberimmediatelyfollowingthedesignationindicatestheyearofig

2、inaladoptioninthecaseofrevisiontheyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperepsilon()indicatesaneditialchangesincethelastrevisionreapproval.ThisstardhasbeenapprovedfusebyagenciesoftheU

3、.S.DepartmentofDefense.1.Scope1.1Thistestmethodcoversthemeasurementoftheinherentstabilityofdledistillatepetroleumfuelsunderspecifiedoxidizingconditionsat95C.NOTE1—Fuelsusedinestablishingtheprecisionmeasuresfthistestmetho

4、dweredescribedasgasoildieselfuelNo.2heatingoilDFMaNavydistillatefuelsuitablefdieselsboilersgasturbines.(ThetermDFMisnolongerusedwhenreferringtofuelmeetingMILF16884requirementsratheritiscalledF76asitconfmstoNATOF76require

5、ments.)Whilethetestmethodmaybeusedffuelsoutsidetherangeofthesefuelstheprecisionmeasuresmaynotapply.1.2Thistestmethodisnotapplicabletofuelscontainingresidualoil.Thistestmethodhasnotbeenvalidatedftestingbiodieselsuchasmeet

6、ingSpecificationD6751blendsofdledistillatesbiodieselsuchasmeetingSpecificationD7467both.TestMethodD7462hasbeendeterminedtobesuitableftestingB100allblendsofdledistillatesbiodiesel.NOTE2—No.1No.2gradesinSpecificationsD396D

7、975currentlyallowupto5%biodieselmeetingSpecificationD6751.Samplescontainingbiodieselcanresultinpartialdissolutioncompromiseofthemembranefiltergiveerroneousresults.1.3ThevaluesgiveninSIunitsaretoberegardedasthestard.Theva

8、luesinparenthesesarefinfmationonly.1.4Thisstarddoesnotpurpttoaddressallofthesafetyconcernsifanyassociatedwithitsuse.Itistheresponsibilityoftheuserofthisstardtoestablishappropriatesafetyhealthpracticesdeterminetheapplicab

9、ilityofregulatylimitationspritouse.2.ReferencedDocuments2.1ASTMStards:2D381TestMethodfGumContentinFuelsbyJetEvaporationD396SpecificationfFuelOilsD943TestMethodfOxidationacteristicsofInhibitedMineralOilsD975Specificationf

10、DieselFuelOilsD1193SpecificationfReagentWaterD4057PracticefManualSamplingofPetroleumPetroleumProductsD4177PracticefAutomaticSamplingofPetroleumPetroleumProductsD4625TestMethodfdleDistillateFuelStageStabilityat43C(110F)D6

11、751SpecificationfBiodieselFuelBlendStock(B100)fdleDistillateFuelsD7462TestMethodfOxidationStabilityofBiodiesel(B100)BlendsofBiodieselwithdleDistillatePetroleumFuel(AcceleratedMethod)D7467SpecificationfDieselFuelOilBiodie

12、selBlend(B6toB20)2.2MilitarySpecification:3MILF16884FuelNavyDistillate3.Terminology3.1DefinitionsofTermsSpecifictoThisStard:3.1.1adherentinsolubles(fmerlyadherentgum)n—materialwhichisproducedinthecourseofstressing1Thiste

13、stmethodisunderthejurisdictionofCommitteeD02onPetroleumProductsLiquidFuelsLubricantsisthedirectresponsibilityofSubcommitteeD02.14onStabilityCleanlinessofLiquidFuels.CurrenteditionapprovedDec.12014.PublishedJanuary2015.ig

14、inallyapprovedin1964.Lastpreviouseditionapprovedin2010asD2274–10.DOI:10.1520D227414.2FreferencedASTMstardsvisittheASTMwebsitewww.astm.gcontactASTMCustomerServiceat.FAnnualBookofASTMStardsvolumeinfmationrefertothestard’sD

15、ocumentSummarypageontheASTMwebsite.3AvailablefromStardizationDocumentsderDeskBldg.4700RobbinsAve.PhiladelphiaPA191115098.Attn:NPODSASummaryofChangessectionappearsattheendofthisstardCopyright?ASTMInternational100BarrHarbD

16、rivePOBoxC700WestConshohockenPA194282959.UnitedStates17.7.2Amatchedweightpairoffiltersalternativelyapreweighedcontrolsamplefiltersshallbeusedfdeterminationoffilterableinsolubles7.8EvapatingVesselbosilicateglassbeaker200m

17、Lcapacitytallstyle.7.9HotPlatecapableofheatingaliquidintheevapatingvessel(7.8)to135C(275F).8.ReagentsMaterials8.1PurityofReagents—Reagentgradechemicalsshallbeusedinalltests.Unlessotherwiseindicateditisintendedthatallreag

18、entsshallconfmtothespecificationsoftheCommitteeonAnalyticalReagentsoftheAmericanChemicalSocietywheresuchspecificationsareavailable.6Othergradesmaybeusedprovideditisfirstertainedthatthereagentisofsufficientlyhighpuritytop

19、ermititsusewithoutlesseningtheaccuracyofthedetermination.8.2PurityofWater—UnlessotherwiseindicatedreferencetowatershallbeunderstoodtomeanreagentwaterasdefinedbyTypeIIIofSpecificationD1193.8.32.24trimethylpentanel(isoocta

20、ne)99.75%purityprefilteredthroughafiltermediumofthetypespecifiedin7.7.8.4Oxygen99.5%puritybetter.Whentheoxygenisdeliveredthroughaplantsystemofpipingafiltershallbeprovidedadjacenttotheconstanttemperaturebathtopreventthein

21、troductionoflinedebrismoistureintotheoxidationcellsapressureregulatadequatetomaintainaconstantflowofgasthroughtheapparatusshallalsobeused.Atankofoxygenofthespecifiedpuritycanbeusedprovideditisequippedwithatwostagepressur

22、eregulat.(Warning—Oxygenvigouslyacceleratescombustion.Donotuseequipmenthavingexposedsurfacescontainingoilgrease.)6ReagentChemicalsAmericanChemicalSocietySpecificationsAmericanChemicalSocietyWashingtonDC.FSuggestionsonthe

23、testingofreagentsnotlistedbytheAmericanChemicalSocietyseeAnnualStardsfLabatyChemicalsBDHLtd.PooleDsetU.K.theUnitedStatesPharmacopeiaNationalFmularyU.S.PharmacopeialConventionInc.(USPC)RockvilleMD.FIG.1OxidationCellFIG.2A

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