电喷汽油发动机燃油消耗过高，叙述可能的原因和可能出现的现象，谈谈车辆如何节油？
油耗高的原因： 1、操作方面：经常急加速、过多的用制动、经常在低速档工作。 2、结构性能方面：空气滤清器堵塞、喷油脉宽过大、燃油压力过大（回油管堵）喷嘴安装有误造成漏油 现象：严重时有冒黑烟、一般是 CO排放超标、有生油味（ HC排放）。
如何节油： 1、操作方面：预热保温、中速行驶、在行驶中缓慢加速，保持正常的冷却水温度，安全滑行。 2、维修保养：轮胎的选择，气压，前轮定位，四轮平衡，轮轴承的正确保养，离合器、制动行程的调整，供油系统、电控系统的维护调整。
暂无解析
36、JoanSmithwrotetherecommendationletteronbehalfof______.
A.aDutchcitizen
B.herdsmanfamilies
C.theEuropeanconsumer
D.SandRiveranditsCEO
37、FromtheletterwecanlearnthatSandRiver______.
A.haslong-termlinkswithherdsmen
B.employsmanyherdsmanworkers
C.manufacturesadvancedmachines
D.sellshand-madeproducts
38、Thetargetconsumersofthenewly-establishedcashmerebrandare______.
A.collegestudents
B.blue-colorworkers
C.high-incomewomen
D.averageherdsmanfamilies
39、Bysaying"awomanofherword"(Para.3),thewritermeansthatMrs.King______.
A.alwayskeepsherpromise
B.isagoodpublicspeaker
C.knowscustomerswell
D.iswelleducated
40、AsfarastheEuropeanmarketisconcerned,thewriterthinksthatSandRiverproducts______.
A.arefitforsupermarketsinbigcities
B.arelikelytoenjoyabigmarketshare
C.willappealtodifferentkindsofcustomers
D.deserveaplaceinluxuriousdepartmentstores
试题">DearSir/Madam,
IampleasedtowritealetterofrecommendationonbehalfofSandRiveranditsCEO,Mrs.JaneKing.Iamveryfamiliarwiththecompany.Mynextbookdealswithitindetail,whichistobepublishedinautumnof2018.IamalsofamiliarwithEuropeanconsumer.AsaDutchcitizen,IhavelivedinEuropefor46yearsandstudiedEuropeanconsumerbehaviorfordecades.IbelievethatSandRiverofferssomethinguniquetotheEuropeanmarket.Ithasestablishedlong-termsupplyrelationswithherdsman(牧民)familiesandownsadvancedGermanmachinery.Thusitcombinesnaturalresourceswithmodernmanufacturingtechniques.Butequallyimportant,SandRiverworkswithmodernfashiondesignerstocreatetrulycontemporaryandappealingdesigns.Theresultisanewly-establishedcashmere(羊绒)brandthatappealstoatargetgroupofhigh-incomewomen.ImetMrs.Kingthefirsttimein2013.Sincethen,wehavemetseveraltimesandtalkedaboutSandRiver'sphilosophy,strategy,andappealtobothChineseandinternationalconsumers.Iwasstruckbyherdeepknowledgeaboutknitting(针织)technology,herenthusiasmforthebrand,andherdeepunderstandingofthecashmereshopper.Iregardherasa"womanofherword."Tosummarize,IbelieveSandRiverproductsdeserveaplaceinluxuriousEuropeandepartmentstoresandMrs.Kingisareliablepartner.Ifyouhaveanyquestions,pleasedonothesitatetocontactme.Sincerely,JoanSmith
36、JoanSmithwrotetherecommendationletteronbehalfof______.
A.aDutchcitizen
B.herdsmanfamilies
C.theEuropeanconsumer
D.SandRiveranditsCEO
37、FromtheletterwecanlearnthatSandRiver______.
A.haslong-termlinkswithherdsmen
B.employsmanyherdsmanworkers
C.manufacturesadvancedmachines
D.sellshand-madeproducts
38、Thetargetconsumersofthenewly-establishedcashmerebrandare______.
A.collegestudents
B.blue-colorworkers
C.high-incomewomen
D.averageherdsmanfamilies
39、Bysaying"awomanofherword"(Para.3),thewritermeansthatMrs.King______.
A.alwayskeepsherpromise
B.isagoodpublicspeaker
C.knowscustomerswell
D.iswelleducated
40、AsfarastheEuropeanmarketisconcerned,thewriterthinksthatSandRiverproducts______.
A.arefitforsupermarketsinbigcities
B.arelikelytoenjoyabigmarketshare
C.willappealtodifferentkindsofcustomers
D.deserveaplaceinluxuriousdepartmentstores
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