一元一次-二元一次方程-一元一次不等式应用题集

在高压缸排汽的总管上装有动力控制止回阀，以便在事故情况下切断，防止蒸汽返回到汽轮机，引起汽轮机超速。在高压缸排汽总管的端头有蒸汽冲洗接口，以供在管道安装完毕后进行冲洗，在管道冲洗完成后用堵头堵死。centerpinchecksandanchoringtheinnercylinder.AccordingtoWhilecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfitinto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.ForcouplingthreesupportedrotorCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonlyonebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,checkthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftlookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthicknessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-free,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormovementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendclosed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwobackwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltstightened,attentiontomonitordialindicator,theninstallthesymmetricaltemporarybolts,thistimesitesslowlymovingrotor,inthemeasuredcircumferenceof8equalpartsbackwheelrimrock,eachmeasuringrelativechangesinvalueshouldbelessthan0.02mm.6.4.5.4couplingreamedandpairedboltreamingdiereamer,adjustablereamers,boringmill,inseveralways.6.4.5.4.1Generalrequirementsbeforereamingorboring,一次方程一元一次方程1.甲、乙两人在相距10千米的A、B两地相向而行，甲每小时走x千米，乙每小时走2x千米，两人同时出发1.5小时后相遇，列方程可得2.将1000元人民币存入银行2年，年利息为5﹪，到期后，扣除20﹪的利息税，可得取回本息和为元。3.某品牌的电视机降价10﹪后每台售价为2430元，则这种彩电的原价为每台元。4.某商品连续两次9折降价销售，降价后每件商品的售价为a元，该产品原价为。5.今年母女二人年龄之和53,10年前母女二人年龄之和是，已知10年前母亲的年龄是女儿年龄的10倍，如果设10年前女儿的年龄为x，则可得方程。6.如果a、b分别是一个两位数的十位上的数和个位上的数，那么把十位上的数与个位上的数字对调后的两位数是。7.某商人在一次买卖中均以120元卖出两件衣服，一件赚25%，一件赔25%，在这次交易中，该商人()。A、赚16元B、赔16元C、不赚不赔D、无法确定8.某工人原计划每天生产a个零件，现实际每天多生产b个零件，则生产m个零件提前的天数为()。A、mmabB、mmaabC、mabD、mmaba9.完成一项工程甲需要a天，乙需要b天，则二人合做需要的天数为()。A、abB、2abC、ababD、abab10.某工厂计划26小时生产一批零件，后因每小时多生产5件，用24小时，不但完成了任务，而且还比原计划多生产了60件，问原计划生产多少零件？11.汽车上坡时每小时走28千米，下坡时每小时走35千米，去时，下坡比上坡路的2倍还少14千米，原路返回比去时多用12分钟，求去时上、下坡路程各多少千米？在高压缸排汽的总管上装有动力控制止回阀，以便在事故情况下切断，防止蒸汽返回到汽轮机，引起汽轮机超速。在高压缸排汽总管的端头有蒸汽冲洗接口，以供在管道安装完毕后进行冲洗，在管道冲洗完成后用堵头堵死。centerpinchecksandanchoringtheinnercylinder.AccordingtoWhilecouplingalignmentshouldkeepoiloutofcavityandlocatetherotoraxisneckraisedarewithintheprescribedlimits,thereshouldbenogaps,Horn,HornandHorn0.05mmfeelergaugesfitinto.Centercoupling,condenserwaterfillingandwater-filledaccordingtofactoryrequirement.ForcouplingthreesupportedrotorCenter,themouthunderthecouplingbetweenthevalueshouldbeasstipulatedinthemanufacturer,usually0.15~0.25mm.Inthecaseofcouplingconnection,ifpossible,liftingonlyonebearingendofthesupportbearingoftherotor,removethebearing,fittedwithspecialtilesandspecialliftingtools,discrotors,checkthejournalfluttertile,shouldgenerallybelessthan0.10MM.Whenthecouplingsandrotorcomeswhenthereisaconflict,thecouplingCentreshallprevail.6.4.5.2.2shaftlookingfor:...6.4.5.3.Provisionalboltconfirmedthepositioningoftherotorsize,aswellasthecouplingbetweentheadjustmentshimthicknessaccuracy,drawingstomeetthetechnicalrequirements.Plane,cylindricalandcleanthecouplingboltholesshouldbecleanandwithoutburrs,scrapironandgrease-free,relativepositionofthecouplingaccordingtothedrawingrequirementsare.Couplingtopscrews,rounddistanceapart,indicatorstomonitormovementoftheaircraft,itsvalueisallowedtopassthevalueaxismoving,mountedadjustmentpads,notepadsinstallationdirectionguidepincouplingwithprocessendclosed.Thebackwheelsslowlytightened,when2mmorso,withstandardwhitebarswheretwobackwheelboltholemeasurementaboveandbelow,confirmtwobackwheelboltholeconcentricity.Then,thesymmetricalhorizontalmounttwotemporaryboltstightened,attentiontomonitordialindicator,theninstallthesymmetricaltemporarybolts,thistimesitesslowlymovingrotor,inthemeasuredcircumferenceof8equalpartsbackwheelrimrock,eachmeasuringrelativechangesinvalueshouldbelessthan0.02mm.6.4.5.4couplingreamedandpairedboltreamingdiereamer,adjustablereamers,boringmill,inseveralways.6.4.5.4.1Generalrequirementsbeforereamingorboring,2二元一次方程（组）与一元一次不等式（组）的应用相遇追及问题1.甲乙两地相距160km,一辆汽车和一辆拖拉机同时两地相向而行，1小时20分钟后相遇；相遇后，拖拉机继续前行，汽车在相遇处停留1小时后调转车头按原路返回，汽车再次出发1小时后追上了拖拉机，这时，汽车拖拉机各自走了多少千米？2.甲、乙二人同时绕400m的环形跑道行走，如果他们同时从同一起点背向而行，2分30秒后首次相遇；如果他们同时由同一地点同向而行，甲12分30秒后超过乙一圈，甲、乙两人每分钟各走多少米？3.甲、乙二人相距6km，二人同向而行，甲3小时可追上乙；相向而行，1小时相遇。二人的平均速度各是多少？4.A、B两地间的路程为360千米，甲车从A地出发开往B地，每小时72千米，甲车出发25分钟后，乙车从B地出发开往A地，每小时行驶48千米，乙车出发多少小