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1、考生答题不准超过此线地区姓名单位名称准考证号职业技能鉴定国家题库数控铣工高级理论知识试卷注意事项1、考试时间:120分钟。2、请首先按要求在试卷的标封处填写您的姓名、准考证号和所在单位的名称。3、请仔细阅读各种题目的回答要求,在规定的位置填写您的答案。4、不要在试卷上乱写乱画,不要在标封区填写无关的内容。一二三四五总分统分人得分得分评分人一、填空题(第1~20题。请将正确答案填入题内空白处。每题1分,共20分。)1.步进电动机采用“三相六拍”通电方式工作,“六拍”是指经过次切换绕组的通电状态为一个循环。2.订立劳动合同的原则有、协商一致和依法订立。3.QT400-15,其中400表
2、示。4.是CNC装置的核心,主要由运算器和控制器两大部分组成。5.机件的某一部分向基本投影面投影所得的视图,称为。6.切削是当前软金属材料最主要的精密和超精密加工方法。7.位置公差对称度的符号为。8.数控机床开机后,一般首先用手动或自动方式使机床各坐标轴返回,通常称回零。9.在精密检测螺旋齿导程和螺旋角时,对导程较大而螺旋角较小的工件,应先测量出的误差,再换算成导程误差。10.G18数控代码所设定的加工平面是。11.心轴和定位销是常用的定位元件。12.一般情况下,夹具的尺寸公差取工件相应尺寸公差的。13.铰刀按可分为直齿铰刀、锥度铰刀和螺旋齿铰刀等。tomorrowIgofishi
3、ngtotheEast.Bossesdon'thavefishtoeat."Positionsoutofafatman:"goingonnowinthepast,theImperialArmycameaftereatingisbad."OldKingsHeadRushthankedthecaptainrushedtothebaseforHongKong,ShenYuezhensaid:"Ithinksowell!"Aboardtheship,toldthroughagain.MonthsProhappymealsfreshlyprepared,Scullchunkspostimme
4、diately.CardthatFushengoftheElvestakecareof:"oldKingsHeadtomorrow,yourfishsuchasweCaptain!""Know"thisistheKing'svoice,byfar.Atnight,theshiptoport,nexttoseeafewxieyeofsmallfishingvessels,stopeating.Alexaftereatingtwoadjacentboatsstoppingby.Learnedfromthemouthsoflocalfishermenherehaveisguerrilla
5、zones,EastTaihuLakeinfestedwithbandits,Miaoganglandmark,quietatnight,sometimesinthemorningzhenzeJapanDevilssweep,afternoonzhenze,Westofguerrillaactivities.Backontheboat,monthlyProactiondecidedbythefirstprogramme,gotoMiaogang,findfocalpointconnector.Gentlyopentheship,sailedintothetracklessYang.
6、MonthsProhaslostitsway,don'tknowdirection,andhadtolettheoldKingwasdriving.OldKingpullingtwooarssaid:"gooddaytoseethestars,cloudydaybyfeel.Youtakeabreak,gotoclassina构词成分。."No,thecabintherewas"grunting...Shout..."snore.Thenextmorning,MiaogangtheLionBridgeamourningfisherman'swoman.Headwrappedinwh
7、itecloth,foot-wearwhiteshoes,sellingfishinafishline.Heraredfloweronthetoeinhisleftfoot,awhitefloweronthetoeofhisrightfoot,whichisajointsign.Womenwereobservedonthestreetthatatobaccostores,postedalotofsmokeonthedoor,thereisnooldknifebrand