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实验表明，经过1200℃煅烧的炭质原料已达到充分收缩，因此煅烧温度一般选择在1200℃左右比较合适。
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SF31904举升开关打到举升位，但厢斗不起，举升分配阀阀芯动作是什么原因造成的？
TheNationalEndowmentfortheArtsrecentlyreleasedthetheresultsofits“ReadingatRisk”survey,whichdescribedmovementoftheAmericanpublicawayfrombooksandliteratureandtowardtelevisionandelectronicmedia.Accordingtothesurvey.“readingisonthedeclineonevery 62.__________region,withineveryethnicgroup,andateveryeducationallevel.“ThedaytheNEAreportreleased,theU.S.House,inatie 63.___________vote,upheldthegovernment'srighttoobtainbookstoreandlibraryrecordsunderaprovisionoftheUSAPatriotAct.TheHouseproposalwouldhavebarredthefederalgovernmentfromdemandlibraryrecords,readinglists,bookcustomer 64.___________listsandothermaterialinterrorismandintelligenceinvestigations.Thesetwoeventsarecompletelyunrelatedto,yetthey 65.___________echoeachotherinthemessagetheysendabouttheplaceofbooksandreadinginAmericanculture.AttheheartoftheNEAsurveyisthebeliefinourdemocratic 66.__________systemdependsonleaderswhocanthinkcritically,analyzetextsandwritingclearly.Alloftheseareskillspromotedby 67.__________readinganddiscussingbooksandliterature.Atthesametime,throughaprovisionofthePatriotAct,theleadersofourcountryareunconsciouslysendingthemessagethatreadingmaybeconnectedtodesirableactivitiesthatmight 68._________undermineoursystemofgovernmentratherthanhelpingdemocracyflourish.Ourculture'sdeclineinreadingbeginwellbeforethe 69._________existenceofthePatriotAct.Duringthe1980s'culturewars,schoolsystemsacrossthecountrypulledsomebooksfromlibraryshelvesbecauseitscontentwasdeemedbyparents 70.__________andteacherstobeinappropriate.Nowwhatstartedinschoolsacrossthecountryisplayingitselfoutonanationstageand 71.________ispossiblyhavinganimpactonthereadinghabitsoftheAmericanpublic.在69处填写改错内容。
弹性吊弦辅助绳和简单悬挂吊索不得有断股和接头。
吊弦线夹在曲线处应与接触线的倾斜度一致。
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