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1、第八章立体化学一、下列化合物有多少中立体异构体？两种四种三种八种四种没有β－溴丙醛，没有goodprocessingperformance,withsufficientrigidity.Templateselectedtemplatesurfaceshouldbeflatandsmooth,plywoodcoatedhighstrength,goodwearresistance,waterresistance,durability,physicalandchemicalpropertiesofstableandsmoothsurface,nop
2、ollution,nodamage,clean.Templatestraightkeel,specifications,andpanelsclose,firmlyattached,havesufficientrigidity.Templatesmaynotplaytheink,paintandwritenumberstoavoidcontaminationofconcretesurfaces.Templatedesignsetofboltholesthroughwalls,butnotfreetoplayholes,openings,portr
3、ayal,nailing.Releaseagentusedonconcretesurfacequalityandcolordoesnotaffectthereleaseagent.Pullboltspecificationsandvarietiesshouldbeaccordingtotheconcretelateralpressure,wallwaterproofing,airdefencerequirementsandtemplatePanelselection,boltsusedshouldhavesufficientstrengthto
4、pulltheboltcasingandplugshouldbedeterminedaccordingtothediameterofthebolt,thechoiceofplastics,rubber,nylonandothermaterials.Topstitchingcross-sectionaccordingtothecircumstances,therequestcanteardown,shouldadoptthetrapezoid,square,roundedsquare;canbemadeforhardwood,nylon,plas
5、tic,aluminum,stainlesssteelandothermaterials.Depthisnotgreaterthan20mm.SteelframeinfrontoftheAssemblymustbestraightened,woodjoistrequiresthatyouhavesufficientrigidity.Keelasfaraspossiblewithoutjoints,ifitprovesnecessarytoconnect,theconnectionmustbestaggered.Templateprocessin
6、gmustbecarriedoutinwoodprocessingplant,processingmaterialswhencuttinglinecutting,precisesize,angle,surfacesmooth,tightjoints.Fieldspellusingatemplatebeforethetemplate,onthesurfacesmoothness,thesectionsize,YinandYangtemplateangle,adjacenttosurfacelevelandchecktheboltAssembly.
7、Beforeclamping,tocheckthetemplate,especiallythetemplatePanelconnection8．3，4－庚二烯，两种（对映体）9．1，3－二甲基环戊烷，三种二、写出下列化合物所有立体异构。指出其中那些是对映体，那些是非对映体。解：颜色相同的是对映体，不同的为非对映体。四种立体异构，两对对映体有三种立体异构，其中两种为对映异构体goodprocessingperformance,withsufficientrigidity.Templateselectedtemplatesurfaceshouldb
8、eflatandsmooth,plywoodcoatedhighstrength,goodwearresistance,waterresistance
