冶金專業(yè)英語試題及答案1.Intheprocessofblastfurnaceironmaking,whichofthefollowingsubstancesismainlyusedasafluxtoremovesulfurandphosphorusimpuritiesfromtheironore?(A)Coke(B)Limestone

(C)Sinter(D)CoalAnswer:(B)2.Duringthesteelmakingprocess,theoperationofblowingoxygenintomoltenironto

removecarbonandotherimpuritiesiscalled:(A)Basicoxygensteelmaking(B)Electricarcfurnacesteelmaking

(C)Inductionfurnacemelting(D)CupolameltingAnswer:(A)3.Whichofthefollowingistheprimaryfunctionofaladleinsteelmaking?

(A)Tomeltscrapsteel(B)Toholdandtransportmoltensteel

(C)Toremoveslagfrommoltensteel

(D)ToaddalloyingelementsAnswer:(B)4.Theterm"hotrolling"referstotheprocessof:

(A)Rollingsteelatroomtemperature(B)Rollingsteelaboveitsrecrystallizationtemperature

(C)Rollingsteelbelowitsrecrystallizationtemperature

(D)RollingsteelwithoutheatingAnswer:(B)5.Inthecontinuouscastingprocess,whatisthemainpurposeofthemold?

(A)Tocoolthemoltensteelrapidly(B)Toshapethemoltensteelintoadesiredcross-section

(C)Toaddalloyingelementstothemoltensteel

(D)Toremoveimpuritiesfromthemoltensteel

Answer:(B)6.Whichofthefollowingisacommonmethodforrefiningsteeltoachievehighpurity?(A)Vacuumdegassing

(B)Mechanicalstirring

(C)Grinding(D)Forging

Answer:(A)7.Theprocessofconvertingpigironintowroughtironbyoxidizingthecarboncontentisknownas:(A)Puddling(B)Bessemerprocess

(C)Openhearthprocess

(D)Electricarcprocess

Answer:(A)8.Whatisthemainadvantageofusingabasicoxygenfurnace(BOF)overanopenhearthfurnace?(A)Lowerenergyconsumption

(B)Higherproductioncapacity

(C)Bettercontroloversteelcomposition

(D)AlloftheaboveAnswer:(D)9.Inthecontextofmetallurgy,whatdoestheterm"annealing"referto?

(A)Heatingsteeltoahightemperatureandthencoolingitslowly

(B)Quenchingsteelrapidlyinwateroroil(C)Forgingsteelathightemperatures(D)RollingsteelatlowtemperaturesAnswer:(A)10.Whichofthefollowingisacharacteristicofausteniticstainlesssteel?(A)Highcarboncontent

(B)Magneticproperties

(C)Corrosionresistance

(D)LowductilityAnswer:(C)11.Theprocessofheatingsteeltoatemperaturebelowitscriticalpointandholdingitthereforaspecifictimebeforecoolingiscalled:

(A)Normalizing(B)Tempering(C)Quenching(D)AnnealingAnswer:(A)12.Intheproductionofaluminum,theHall-Héroultprocessinvolves:

(A)Electrolysisofaluminainmoltencryolite(B)Reductionofbauxitewithcarbon

(C)Smeltingofaluminainablastfurnace

(D)Leachingofaluminafromclay

Answer:(A)13.Whatistheprimarypurposeofaddingchromiumtostainlesssteel?

(A)Toincreasehardness(B)Toimprovecorrosionresistance

(C)Toenhanceductility(D)ToreducecostAnswer:(B)14.Theterm"coldworking"referstotheprocessof:

(A)Workingmetalattemperaturesaboveitsrecrystallizationpoint

(B)Workingmetalattemperaturesbelowitsrecrystallizationpoint

(C)Meltingmetalinafurnace(D)CastingmetalintomoldsAnswer:(B)15.Whichofthefollowingisacommonmethodforjoiningmetals?(A)Welding

(B)Forging

(C)Rolling

(D)Extrusion

Answer:(A)16.Inthecontextofpowdermetallurgy,whatisthemainadvantageofusingpowderedmetals?(A)Lowerproductioncosts

(B)Abilitytoproducecomplexshapes

(C)Highermeltingpoints

(D)Improvedelectricalconductivity

Answer:(B)17.Theprocessofremovinggasbubblesfrommoltenmetaliscalled:(A)Degassing

(B)Desulfurization

(C)Deoxidation

(D)AlloyingAnswer:(A)18.Whichofthefollowingisacommonadditiveusedtoimprovethemachinabilityof

steel?(A)Sulfur(B)Phosphorus

(C)Manganese

(D)SiliconAnswer:(A)19.Theterm"ferrous"referstometalsthat:

(A)Containiron(B)Donotcontainiron

(C)Aremagnetic(D)Arenon-magnetic

Answer:(A)20.Intheproductionofcopper,theprocessofleachingcopperorewithsulfuricacidisknownas:(A)Smelting

(B)Leaching

(C)Electrolysis

(D)Roasting

Answer:(B)21.Whatisthemainpurposeofaddingnickeltosteel?

(A)Toincreasehardness(B)Toimprovecorrosionresistance

(C)Toenhanceductility(D)ToreducecostAnswer:(B)22.Theprocessofheatingsteeltoatemperatureaboveitscriticalpointandthencoolingitrapidlyinwateroroiliscalled:

(A)Annealing(B)Normalizing

(C)Quenching(D)TemperingAnswer:(C)23.Whichofthefollowingisacommonmethodfortestingthehardnessofmetals?(A)Tensiletest(B)Impacttest(C)Rockwellhardnesstest

(D)FatiguetestAnswer:(C)24.Inthecontextofmetallurgy,whatdoestheterm"alloying"referto?

(A)Meltingmetalstogether(B)Addingelementstoabasemetaltoimproveitsproperties

(C)Separatingmetalsfromores(D)CastingmetalsintomoldsAnswer:(B)25.Theprocessofconvertingironoreintopigironinablastfurnaceinvolves:

(A)Reductionofironoxidewithcarbonmonoxide

(B)Oxidationofironwithoxygen(C)Meltingironorewithheatalone(D)ElectrolysisofironoreAnswer:(A)26.Whichofthefollowingisacharacteristicofmartensiticstainlesssteel?(A)Highcorrosionresistance

(B)Highhardnessandwearresistance

(C)Goodductility(D)LowcostAnswer:(B)27.Theterm"galvanizing"referstotheprocessof:

(A)Coatingsteelwithzinctopreventcorrosion

(B)Coatingsteelwithaluminumtoimprovehardness

(C)Heatingsteeltoahightemperatureandthencoolingitrapidly

(D)Workingsteelattemperaturesbelowitsrecrystallizationpoint

Answer:(A)28.Intheproductionoflead,theprocessofroastingleadsulfideoretoproduceleadoxideiscalled:

(A)Smelting

(B)Roasting

(C)Leaching

(D)Electrolysis

Answer:(B)29.Whatisthemainpurposeofaddingvanadiumtosteel?

(A)Toincreasehardnessandwearresistance

(B)Toimprovecorrosionresistance(C)Toenhanceductility(D)ToreducecostAnswer:(A)30.Theprocessofshapingmetalbyapplyingcompressiveforcesiscalled:(A)Forging

(B)Rolling

(C)Extrusion

(D)Drawing

Answer:(A)31.Whichofthefollowingisacommonmethodforreducingtheoxygencontentinmoltensteel?(A)Addingcarbon

(B)Addingaluminum

(C)Addingsilicon

(D)Alloftheabove

Answer:(D)32.Inthecontextofmetallurgy,whatdoestheterm"grainsize"referto?

(A)Thesizeofthemetalparticles(B)Thesizeofthecrystalsinthemetal

(C)Thesizeoftheimpuritiesinthemetal

(D)Thesizeofthemoldusedforcasting

Answer:(B)33.Theprocessofheatingsteeltoatemperaturebelowitscriticalpointandthencoolingitinairiscalled:

(A)Annealing

(B)Normalizing

(C)Quenching

(D)Tempering

Answer:(B)34.Whichofthefollowingisacommonadditiveusedtodeoxidizemoltensteel?(A)Aluminum

(B)Silicon(C)Manganese

(D)Alloftheabove

Answer:(D)35.Theterm"ductility"referstotheabilityofametalto:

(A)Resistdeformation(B)Bedrawnintothinwires(C)Withstandhightemperatures(D)Resistcorrosion

Answer:(B)36.Intheproductionofzinc,theprocessofelectrolyzingzincsulfatesolutiontoproducepurezinciscalled:

(A)Smelting(B)Leaching(C)Electrolysis

(D)RoastingAnswer:(C)37.Whatisthemainpurposeofaddingmolybdenumtosteel?

(A)Toincreasehardnessandwearresistance(B)Toimprovecorrosionresistance,especiallyinchlorideenvironments

(C)Toenhanceductility(D)ToreducecostAnswer:(B)38.Theprocessofshapingmetalbyforcingitthroughadieiscalled:(A)Forging

(B)Rolling

(C)Extrusion

(D)Drawing

Answer:(C)39.Whichofthefollowingisacommonmethodfortestingthetensilestrengthofmetals?(A)Rockwellhardnesstest

(B)Tensiletest(C)Impacttest(D)Fatiguetest

Answer:(B)40.Inthecontextofmetallurgy,whatdoestheterm"inclusion"referto?

(A)Atypeofmetalalloy(B)Anon-metallicparticletrappedinthemetal

(C)Amethodfortestingmetalhardness

(D)AprocessforrefiningmetalAnswer:(B)41.Theprocessofheatingsteeltoatemperatureaboveitscriticalpoint,holdingitthere,andthencoolingitinacontrolledmannertoproduceauniformgrainstructureiscalled:(A)Annealing(B)Normalizing(C)Quenching

(D)Tempering

Answer:(B)42.Whichofthefollowingisacommonadditiveusedtoimprovethecreepresistanceofsteelathightemperatures?

(A)Chromium(B)Nickel(C)Vanadium(D)Alloftheabove

Answer:(D)43.Theterm"malleability"referstotheabilityofametalto:

(A)Resistdeformation(B)Behammeredorrolledintothinsheets

(C)Withstandhightemperatures

(D)ResistcorrosionAnswer:(B)44.Intheproductionoftin,theprocessofreducingtinoxidewithcarboniscalled:(A)Smelting

(B)Roasting

(C)Leaching

(D)Electrolysis

Answer:(A)45.Whatisthemainpurposeofaddingtitaniumtosteel?

(A)Toincreasehardnessandwearresistance

(B)Toimprovecorrosionresistance,especiallyinseawater

(C)Toenhanceductili