下面哪些特性是调节层所具有的：
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