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1、煤矿瓦检工题库（Examinationpaperstorehouseofcoalminetile）CoalvocationalskillsappraisaltrainingoutlineMinegasinspector(theoreticalpart)First,themultiple-choicequestion(1~70questions,willselectthesymbolsfilledinbrackets)1.coalminegasiscomposedofcoalseamgas(CH4)asthemainha
2、rmfulgas.2.,"coalminesafetyregulations"providesthattheconcentrationofO2intotheairstreamshallnotbelessthan(20)%.3.afterthegroundairentersthepit(O2),thecontentdecreases.4.,"coalminesafetyregulations"providesthateachperson'sairsupplyperminuteshallnotbelessthan(4)m3
3、.5.,theincreaseinair(nitrogen)intheminewilllowertheupperlimitofthegasexplosionandlowertheupperlimit.6.whenmethaneisburned,theoxygencontentshouldbenolessthan(15)%.7.,"coalminesafetyregulations"providesthattheconcentrationofCO2intotheairshallnotexceed(0.5)%.8.when
4、theconcentrationofCOinairreaches(0.01)%,itcancausepoisoning.9.ventilationofminecaneliminategasfromworkingface(70%~80%).The10.islocatedinthecentralmineintotheairshaft,shaftlocatedinIdatoalayoutforthetwowings(diagonaltypeventilation).11.tandemventilationischaracte
5、rizedbytheequalamountofairflowineachsection.The12.partfanadoptstheairinletoftheairductwhichispressedandventilated,andreachestheworkingsurfacewithaneffectiverangeofM(7~8).Thedistancebetweentheinstallationof13.fansandtheexitofroadwayshallnotbelessthan(10)M.14.,"co
6、alminesafetyregulations"providesthattheminingfaceallowsminimumwindspeed(0.25)m/s.15.theventilationsystemforseparatingtwonewandpollutedairfromhorizontalcrossingintothreedimensionalinterchangeis(windbridge).16.,thefollowing(H2S)gascanstimulatethehumaneyemaskandres
7、piratorysystem.17.themainharmfulgasproducedbydownholeblastingis(NO2).18.thefollowing(O2)gasesarecombustionsupportingagentsforcombustionofmaterials,For19.personsworkingoracting,aerobicoxygendemandperminutewas(1~3).20.,"coalminesafetyregulations"stipulatesthattheu
8、ndergroundairCOconcentrationshallnotexceed(0.0024)%.21.CO2isacolorless,odourless,slightlyacidsmellinggas.22.undergroundCO2usuallyaccumulatesinpoorlyventilatedroadways
