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1、首届全国印刷行业职业技能大赛题库a（Thefirstnationalprintingindustryprofessionalskillscompetitionitembanka）(sheetfedoffsetprinting)-BcoilI.judgmentquestions(1pointspersubject)1,in1440China'sBiShenginventedthemetaltypecastingtechnology.(N)2.In1906,theGermanKasparHermanmadethefirstthreerolleroffsetpress
2、ingermany.(Y)3lithographicprintingistheuseofoil/watermutualinsolubleandselectiveabsorptionandotherbasicprinciplesofprinting.(Y)4andCMYKcolorspaceisthecolorspaceformedbytheprintingink.(Y)5,theadditivemethodisbasedonyellow,magenta,greenandthreeprimarymaterialspluscolormixingprincipleto
3、generatenewcolormethods.(N)6.Inoffsetprinting,dampeningisanonpolarliquid,andoilisapolarsubstance.(N)7,thethreeelementsofcolorvisionarelight,colorrenderingobjects,normalinspectionorgans.(Y)8,digitalprintingistochangethegraphicinformationdirectlyprintedonthesubstrate,on-demandprintingm
4、ethod.Inthefuture,itwillreplacethetraditionaloffsetprintingmethod.(N)9,inthestrictsense,theoffsetprintingusesthePSversionsurfacetobelongtotheflatconcaveshape.(N)10,offsetprintingofgraphicsandtextpartoftheselectiveadsorptionperformance.(Y)11,offsetPSversioninstorageorintheprintingproc
5、ess,notafraidofstronglightirradiation.(N)12,thesurfacetensionofpurewaterat20DEGC,about7.2x10-2N/m(Newton/m).(Y)13,intheprintingprocess,wettingisthefingerprintsontheversion(solid)surfacewettingliquidorgasisreplacedbyink.(Y)14,offsetinkemulsionisnotinevitable,emulsifiedinkmustnotbeused
6、foroffsetprinting.(N)15,"oilinwater"emulsioninkforoffsetprintingqualityandprintingprocesshaveadverseeffects.(N)16,theoretically,onlywhentheblankpartoftheprintingplateandtheinkfilmofthegraphicpartarenotmutuallyinfiltrated,Reachedtheoffsetinkbalance.(Y)17,wheninkandwaterbalance,usually
7、onthelayoutoftheinkfilmthicknessof3m,waterfilmthicknessof5m.(N)18,whenthelightnessofthecolorchanges,thesaturationdoesnotchange.(N)19,theblackversioncanstabilizetheintermediateharmonicdarkenedcolor.(Y)20,lightnessisthemoststrikingfeatureofcolor.(N)21,CTPplatemakingsystemadoptslasersca
8、nningtechnol
