安全监测工试题-单选题（safety monitoring engineering test questions）

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1、安全监测工试题-单选题（Safetymonitoringengineeringtestquestions）[radioquestions]Classification:professionalknowledgeThetestisbasedon________:sensor,devicedetectionandsignaltransformationofphysicalquantitytobemeasured.A.sensitiveelementB.converterC.measuringcircuitAnswer:AScore:1Classification:professional

2、knowledgeQuestion:platinumcatalyticelementismadeofplatinumwirewithpurityof________.A.99%B.99.9%C.99.99%Answer:CScore:1Classification:professionalknowledgeQuestions:platinumwiremustbeinthe________abovehightemperaturetomakecomponentswork.A.800temperatureB.900temperatureC.1000temperatureAnswer:BSc

3、ore:1Classification:professionalknowledgeQuestion:methanesensoriswidelyused________.A.carriercatalyticelementB.platinumwirecatalyticelementC.semiconductorcatalyticelementAnswer:AScore:1Classification:professionalknowledgeQuestion:inthecoalmine,________gasdetectioninstrumentismainlyusedforthedet

4、erminationofhighconcentrationofgas.A.heateffecttypeB.thermalconductivityC.semiconductorgassensortypeAnswer:BScore:1Classification:professionalknowledgeQuestion:nowthecarbonmonoxidesensorarewidelyusedincoalmine________.A.electrochemicalformulaB.infraredabsorptiontypeDirectedbyC.Answer:AScore:1Cl

5、assification:professionalknowledgeQuestion:electrochemicalcarbonmonoxidesensorinstalledin________electrolyte.WtA.HNO3B.H2SO4C.HClAnswer:BScore:1Classification:professionalknowledgeQuestion:oxygensensorusingambienttemperaturerange________.A.0to20OCB.0to40OCC.0to60OCAnswer:BScore:1Classification:

6、professionalknowledgeTest:measuringrangeoflowconcentrationmethanesensoris________.A.0to4%B.0to20%C.0to40%Answer:AScore:1Classification:professionalknowledgeQuestion:theaccuracyofgasconcentrationoflowconcentrationmethanegasusingthestandardsensoradjustmentisgenerallyabout________.A.0.5%B.1.5%C.2%

7、Answer:CScore:1Classification:professionalknowledgeThetestshows:KG3003lowconcentrationmethanesensornegativeconstantcurrentiszero,adjustingthezeropotentiometeris________invalidreason.FailureofA.blackelementFailureofB.whiteelementC.