跪求空调考试内容 暖通空调考试题库哪有下载？

Hello,seeisthequestionthatisabouthVACexamquestionbank,thecentofthepromiseisalsomuch,cameintoanswer,breakthroughstudynethasdownload,Iambelowinside,firstyoucopypasteafewquestions,thequestionismuch,herealsodonotput,yougobelowdirectly.34.Inthedouble-slitinterferenceexperiment,iftheseamishorizontal,iftheplateonwhichthedoubleseamislocatedisslightlyshiftedupward,otherconditionsbeingthesame,thentheinterferencefringeAonthescreen.B.ItmovesupandthespacingisconstantC.Itdoesnotmovebutthe【答案】B)thedistancebetweentheadjacentlinesofthedoubleslitinterference;[resolution]double-slitlightanddarkstripeslocationforxmonths=kDV(nd),containing=x+(2k+1)forDV(2nd),k=0,...Therefore,thespacingbetweenadjacentbright(ordark)stripesisAx=DV(nd),thatis,thespacingbetweenstripesisonlydeterminedbythedistancedbetweenthetwoslits,thedistancedbetweenthescreenandthetwoslits,andthewavelengthoflight.Whenthedoubleseammovesup,thesethreequantitiesareunchanged,sothespacingofinterferencestripesonthescreenisunchanged,andthecentralbrightstripeisthesameheightasthemiddlelineofthedoubleseam.Therefore,itcanbeseenthatwhenthedoubleseammovesup,thecentralcookingstripealsomovesup,andthespacingofstripesisunchanged.35.Intheair,Thereisasoapfilmwithathicknessof0.32um(1um=10-6m)andanindexofrefractionof1.33.Ifthewhitelightisirradiatedvertically,thecolorofthefilmwillbeapproximately()byreflection.A.purple(430nm)b.blue(470nm)c.green(566nm)D.A)redB)redC)redD)red【解析】inthecaseofthehalf-waveloss,theopticalpathdifferenceofopticalenhancementis:2n2d+/2=k;K=1,2...Therefore,whenk=1,21=4m2d=1.7024m*170mm;Whenk=2,21=4n2D3=0.567pum=567nm(green).36.ThreepolarizedplatesP1,P2andP3arestackedtogether.ThepolarizationdirectionsofP1andP3areperpendiculartoeachother,AndtheincludedAnglebetweenthepolarizationdirectionsofP2andP3is30°.Anderson/4B.i0/8C.3T0/32D.3L0/8C[test]answer】【polarizationofthelight;AccordingtoMarius'lawtheintensityoftransmittedlightis1=10cs2a.Sincetheintensityofnaturallightishalvedafterpassingthroughthepolarizer,theintensityoflightafterpassingthroughthepolarizerP1isI=L/2.TheincludedAnglebetweenthepolarizationDirectionofP1andP2is60°,sothelightintensityafterP2andP3throughthepolarizerisalsogiventotheproblem,thedownloadplacealsosaid,shouldsolveyourproblem,toconfirmthehelpfulwords,hardbacktoadopttothenextpoints,thankyou!

制冷操作证实操考试 1、如何使用温度计测出空调制冷时，出风和回风温度？ 2、使用风速仪测出空调的黄色的圆点是用来感应的，每一次反射，把风速计测量为一转，你就是可见光感应风速计制冷与空调设备运行模拟考试题库

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