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1、11.5可化为一元二次方程的分式方程及其应用一、选择题1、在方程（1）；（2）；（3）；（4）中，是分式方程的有（）A．（1）和（2） B．（2）和（3） C．（3）和（4） D．（1）和（4）2、下列四组解哪组是方程的根是（）A． B． C． D．3、如果方程有增根，那么k的值是（）A、1B、C、D、 4、一水池有甲乙两个进水管，若单独开甲、乙管各需小时、小时可注满空池；现两管同时打开，那么注满空池的时间是（） A． B． C． D． 5、甲乙两人同时从地出发，骑自行车到地，已知两地的距离为，甲每小时比乙多走，并且比乙先到40分
2、钟．设乙每小时走，则可列方程为（） A． B． C． D．6、下列计算正确的是（）A、B、C、D、centerpinchecksandanchoringtheinnercylinder.AccordingtoWhilecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfiti
3、nto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.ForcouplingthreesupportedrotorCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonly
4、onebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,checkthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftl
5、ookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthicknessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-fre
6、e,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormovementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendc
7、losed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwobackwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltstightened,attentiontomonitordialindicator,theninstallthesymm
8、etricaltemporarybolts,thistimesitesslowlymovingrotor,inthemeasuredcircumferenceof8equalpartsbackwheelrimrock,e
