版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進行舉報或認領(lǐng)
文檔簡介
1、ThedigitaltemperaturesensorofDS18B20ThedigitaltemperaturesensorofDS18B20,ThisproductusestheAmericanDALLAScompanysDS18B20networkdigitaltemperaturesensorchippackage.butbecomewear-resistanttouch,thephysicalvolumeissmall,convenient,packagingformisvaried,Suitableforallkindsofnarrowspaceindigitaltemperatu
2、retestandcontrolfieldequipment.Unique1-WireTMinterfacerequiresonlyoneportpinforcommunication.Multidropcapabilitysimplifiesdistributedtemperaturesensingapplications,requiresnoexternalcomponents,Canbepoweredfromdataline.Powersupplyrangeis3.0Vto5.5V,Zerostandbypowerrequired,Measurestemperaturesfrom-55C
3、to+125C.Fahrenheitequivalentis-67Fto+257F,0.5Caccuracyfrom-10Cto+85C,Thermometerresolutionisprogrammablefrom9to12bits,Converts12-bittemperaturetodigitalwordin750ms(max.).User-definable,nonvolatiletemperaturealarmsettings,Alarmsearchcommandidentifiesandaddressesdeviceswhosetemperatureisoutsideofprogr
4、ammedlimits(temperaturealarmcondition).Applicationsincludethermostaticcontrols,industrialsystems,consumerproducts,thermometers,oranythermallysensitivesystem.1、 thedescriptionoftechniquefunction:1) Single-lineinterfaceisunique,DS18B20whilelinkingwithmicroprocessoronlyneedalinecanimmediatelycarryoutth
5、edoubleofmicroprocessorandDS18B20towardthecommunication.2) measurescope-55+125,propermeasureresolutions0.5.3) supportseveralsetnetsfunction,severalDS18B20canmergeatuniquethreeon-line,themostcanmerge8,ifamountwasexcessive,itwouldmakepowersupplythepowerelectricvoltageoverlow,resultinthusthesignaldeliv
6、ersofunsteady,therealizationsordertomeasuremore4) workthepower:35V|DC5) dontneedanyoutercirclecomponentintheuse6) measuretheresultmeasureawaystringwith912numberslinetransmission7) stainlesssteelsprotecttotakecareofdiameter68) beapplicabletoDN1525,DN40DN250variousequipmentsthatlieindustrialpipingofqu
7、alityandnarrowandsmallspacemeasure9) standardsinstallthethreadM10X1,M12X1.5,theG1|2termchooses10) PVCelectriccabledirectthelineorvirtuoustypeballtypeconnectlineboxline,theeasytoandotherelectricappliancesequipmentslinks.2、 Application1) productsareapplicabletocoldstorage,foodCang,keepabottle,tele-com
8、municationsengineroom,electricpowerengineroom,cableslotetc.measuresmoderatecontrolrealm2) stalktiles,urnbody,theFangmachine,theaircondition,waitsindustrialequipmentsofnarrowandsmallspacetomeasureamoderatecontrol.3) caraircondition,refrigerator,coldcabinet,andmediumlowtemperaturedryboxofetc.s.4) prov
9、idehot|makecoldpipingcaloriestocalculate,thecentralairconditiondividesathermalenergytocalculatetomeasureamoderatecontrolwithindustrialrealm3、ProductmodelnumberandspecificationtypetemperaturerangeinstallthreadelectriccablelengthapplypipingTS-18B20-55125no1.5mTS-18B20A-55125M10X11.5mDN1525TS-18B20B-55
10、1251/2GConnectslineboxDN40604、ConnectlineinstructionThecharacteristicsspecialfrontlineconnects,needsalinetocorrespondbylettertoordermoreabilityandsimplifiedadistributetypethetemperaturespreadthefeelingapplicationdidntneedanexternalcomponenttousedatatotallinepowersupply,theelectricvoltagescopehasneve
11、rneededtoprovideforusethepowerdiagraphtemperaturescopeforthe3.0-5.5VsBE-55cto+125C.TheFahrenheitisequalhence-67-257Fahrenheitdegree-102goto+85Caccuracyinsidethescopeis此5CThetemperaturespreadsafeelingmachinesprogrammableresolutiontoconvertinto12numberformatsfor912temperaturesbiggestbeworthto750amilli
12、-ofsecondthecustomercandefineofnotandeasilylosesextemperaturetoreporttothepolicetoestablishanapplicationtoincludeaconstanttemperaturecontrol,industrialsystem,consumeelectronicsproductthermometer,oranyhotsensitivesystemThenumberthermometerthatdescribestheDS18B20provides9-12(theprogrammableequipmentst
13、emperaturereadanumber.TheinformationisdisheveledhairtosendtoconnectthroughalinefromtheDS18B20,socentralmicroprocessorandDS18B20onlyhaveaperlineconjunction.Forreadandwriteandthetemperatureconversioncanacquireenergyfromthedataline,dontneedtocircumscribethepower.BecauseeachDS18B20includesaspecialordina
14、lnumber,severalds18bs20sesescanbeexistedtoatotallineatthesametime.Thismakesthetemperaturespreadafeelingmachinetoplaceinmanydifferentplaces.Itsuseisalotof,includeanairconditionenvironmentcontrol,detectequipmentsinsidethebuildingormachine,andcarryonprocessmonitorandcontrol.TheDS18B20internalstructurem
15、ainlyconstitutestofromthefour-partcent:64temperaturesthatonlyengraveROMandtemperaturetospreadafeelingmachineanddontvaporizereporttothepolicetotriggeramachineTHandTLandallocationtodepositamachine.WhileequipingsignallineGao,theinternalcapacitorstoresanenergyfromalineandcorrespondsbylettercircuittothef
16、ilmpowersupply,andatlowelectricityevenperiodforfilmpowersupplyuntilnextGaoDianPingsarrivalrefreshes.ThepoweroftheDS18B20canalso.5Velectricvoltagesgetfrom3Vs-5sintheexterior.TheDS18B20adoptsfrontlinecorrespondencetoconnect.Becausethefrontlinecorrespondenceconnects,havetopreviouslycompleteROMenactment
17、,otherwisememoryandcontrolfunctionwillcannotuse.Mainlyprovidefollowingfunctiontoorderanyfirstofa:1)readROM2)ROMmatch3)searchROM4)jumpROM5)reporttothepoliceacheck.Theseinstructionoperationthefunctionhasno64sequencesthatonlyengraveROMofasparepart,canbehangingseveralsparepartsonthefrontlinetomakeselect
18、ionacertainsparepart,atthesametime,thetotallinecanalsoknowalwayson-linehanghowmuch,whatkindofequipments.IftheinstructionsuccessfullymakestheDS18B20completiontemperaturemeasure,thedatasavesinthesavingmachineofDS18B20.TheperformanceofacontrolfunctionconductordesignationDS18B20measures.Measureresultwil
19、lbeplacedintheDS18B20memories,andcanletreadingtosendouttheconductorofrememberingthefunction,readingcontentsofsliceascendsavingmachine.ThetemperaturereportstothepolicetotriggermachineTHandTLstoallhaveonewordstanzaEEPROMdata.IfDS18B20nottheusereporttothepolicetocheckinstruction,thesedepositamachinetob
20、eageneralcustomertorememberuse.Stillcarrytothereisallocationwordsthestanzaconvertingbyidealsolutiontemperaturenumberontheslice.WriteTH,TLinstructionandallocationwordstanzamakesuseofinstructioncompletionthatremembersfunction.Passtoslowlysaveamachinetoreadtodepositamachine.Alldatasreadwritingallabegin
21、ningfromthelowest.TheDS18B20has4maindataparts:1、 onlyengrave64sequencesinROMarewhatfactoryfrontbeonlyengravedlikes,itcanseemaketheaddresssequencethatistheDS18B20code.64alignmentsthatonlyengraveROMare:Starting8(28Hs)istheproducttypemarknumber,immediatelyafterof48sequencesthatistheDS18B20oneself,last8
22、is56frontcirculatingredundancyschoolstocheckcode.(CRC=X8+Xs5+Xs4+s1)ThefunctionthatonlyengravesROMistomakeeachDS18B20alleachnotsame,socancarryoutapurposethatisalwayson-linetohangtoconnectseveralDS18B20s.2、 thetemperatureintheDS18B20spreadafeelingmachinetocompletethediagraphtothetemperatureandtake12c
23、onversionsasanexample:Thebinarysystemexpandingwith16signsrepairscodetoreadtocountaformtoprovide,with0.0625|theLSBformexpress,amongthem,theSisasign.ThesavingmachineofDS18B20includeshighspeedtotemporarysavemachineRAMandcangiveorgetanelectricshocktowipeinadditiontoRAM,cangiveorgetanelectricshocktowipei
24、nadditiontoRAMincludestemperaturetotriggermachineTHandTLagain,andanallocationdepositsamachine.Savingmachineabilitytheintegrityreallysettlethecommunicationoffront-lineport,thenumberstartsusingtowritetheorderofdepositingthemachinetowriteintodepositamachine,immediatelyaftercanalsouseorderofreadingtodep
25、ositthemachinetoconfirmthesenumbers.AfterconfirmingcanusetheorderthatthereplicationdepositsamachinecangiveorgetanelectricshocktowipetotransferthesenumberstoinadditiontoRAMin.Whileoncemodifyingtodepositthenumberinthemachine,thisprocesscanensuretheintegrityofnumber.ThehighspeedtemporarysavesmachineRAM
26、toconstitutetofromthesavingmachineof8wordstanzas;Thefirstandthesecondwordstanzaaretemperaturestoshow.ThefourthSha-howordstanzaistomakeduplicateTHandTL,atthesametimethefourthSha-honumberofwordstanzacanrenew;Thefifthwordstanzaistomakeduplicateallocationtodepositamachine,thefifthnumberofwordstanzacanre
27、newatthesametime;6,7,8,threewordstanzasarecalculatoroneselfuse.Usingreadsthattheorderthatdepositamachinecanreadtheninthwordstanza,thiswordstanzaiseightwordstanzastothefronttocarryonschoolstocheck.648ex-oneselfcodesthatisaDS18B20thatonlyengraveROM,next48areacontinuousnumbercode,8ofendisto56ex-oftheCR
28、Cschoolscheck.64-thelightofengraveROMandincludethefunctionorderof5ROMs:ReadROM,matchROM,jumpupROM,checktoseekROMandreporttothepolicetochecktoseek.TheDS18B20canuseexternalpowerVDDaswellasusethepowerinthelivingonofinnerpart.WhentheVDDportconnectstheelectricvoltagewith3.0VsVs-5.5sesisuseexternalpower;W
29、hentheVDDportconnectsgroundusedthepowerinthelivingonofinnerpart.Nomatterisaninnerparttoliveonthepoweroranexternalpowersupply,11theOlinewanttoconnecta5KQtoorsolyanduppullelectricresistance.Allocationsdepositingamachineistheconversionthatinstallsdifferentnumbertomakesuretemperatureandnumber.R1,theR0is
30、thedecisionoftemperature,fromtheR1,thedifferentcombinationofR0caninstallfor9,10,11,12temperaturesshow.Socanknowadifferenttemperatureconversiontoshouldofconversiontime,fourkindsofresolutionsofallocationsdistinguishto0.5,0.25,0.125and0.0625,factorytakeinstallingas12.DS18B20atfactorywithinstallfor12,re
31、adtemperaturetotallyread16,sotheempressis112entermaketoconvertinto10entermakeafteratmultiply0.0625isthenmeasureoftemperature,alsoneedtobejudgedplusorminus.Front5piecewordsaresigns,current5is1:00,readoftemperatureisminusquantity;5is0:00,readatpresentoftemperatureisplusquantity.16numbersputfromlowtoGa
32、oWei.Theinstructionagreesoncodeoperatinginstructions:1) Thetemperatureconvertsthe44HstartDS18B20tocarryonatemperatureconversion2) ReadtotemporarysavemachineBEHtoreadtotemporarysavemachine9wordstanzacontentses3) Writetemporaryandsavethemachine4EHstowriteinadatatemporaryTHofsavingthemachineandTLwordst
33、anza4) Thereplicationtemporarysavesthemachine48HstemporarysavetheTHofmachineandTLwordstanzatowriteE2RAM5) Re-adjusttheE2RAMB8sHswritetheE2THwithinRAMsandTLwordstanzatoarrivetotemporarysavemachineTHandTLwordstanzaandreadthatthesignalthattheB4HstartDS18B20ofthepowersupplymethodsendsoutthepowersupplyme
34、thodgiveslordCPUThebeginningofDS18B20startstoturn.1) placedatalinefirstGaoDianPing1.2) postpone(whatthetimerequestisntverystrict,butpossiblyalittlebitshorter)3) thedatalinepullalowelectricityeven0.4) postpone750.(thehorarytimescopecanfrom480-960)5) thedatalinepullGaoDianPing1.6) waitforwhilepostponi
35、ng(ifisearlytostarttobecomeanachievementthenin15-60timeinsideproducealowelectricitythatisreturnedbytheDS18B20even0.Canmakesureitsexistenceaccordingtothestatus,butshouldnoticecannotbeinfinitelycarryonwaitingfor,otherwisewillmakeproceduregetintotodiecirculating,socontrolwhilewantingtocarryontobesuper)
36、.7) ifCPUreadthedataison-linelowtogiveorgetanelectricshockeven0after,whilealsoneedingtodotopostponetimeforittopostponesfromsendoutofGaoDianPingstarttocalculatetoatleastwant480.8) pulldatalineagainGaoDaoGaotoendaftergivingorgettinganelectricshockiseven1.Asthesimplestructure,convenientinstallment,lowl
37、ossandwiderangeoftemperaturetest,DS18B20temperaturetestsensorsareappliedtothefieldswhichneedsthemultipointtemperaturetest,suchasthechemicalindustry,thegrain,theenvironmentsupervisionandsoon.BecauseoftheadoptionofonebusintheDS18B20multipointtemperaturetestsystem,allDS18B20arehungononebus,andthenthete
38、mperatureconversionvalueofeachtestpointisreadbyturns.Astheconversionvaluemustbereadafterreading-pinstatefor8times,andpositionandstoredatamustbemoved,sotimespendmuchinreadingonepointofthedatasystembyeverytime.Ifthetemperaturetestsystemislarge-scaled,thesystemlosscausedbyitisrathermuch,andthenthealter
39、natetestspeedofthesystemdecreasesobviously,whichinfluencestheefficiencyofthemultipointtemperaturetestsystemseriously.Inthispaper,DS18B20arehungonsomeI/ObusesbygroupingDS18B20evenly,andtheconversiontemperaturedataisobtainedbyreadingthestateofDS18B20,thenthesystemlossdecreasesandthealternatetestspeedi
40、ncreasesobviously,whichwoninfluencetheprecisionandthereliabilityoftheconversion.Asetofmultipointtemperaturetestofartificialenvironmentlaboratoryisachievedinthispaper,whichincreasesthetestefficiencyoftheformersystem.小|DS18B20isthesinglebusdigitaltemperaturesensorfromAmericanDallasCompany.DS18B20iscon
41、sistedofthe64figuresROMengravedbylaser,thetemperaturesensitivitycomponent,non-volatiletemperaturealarmstrigger(DeviceTHandTL).DS18B20communicateswiththemicroprocessorbythesinglebusportandthetestrangeofDS18B20isfrom-55centigradeto+125centigrade,andtheincrementalvalueis0.5centigrade.Thetemperaturecanb
42、echangedintofigureswithin720msandeachDS18B20hasthesole64figuresserialnumber.ThespecificcontentisrevealedasFig1:Therearetwo8figuresstorages(No.0andNo.1)forstoringtemperaturevalueinDS18B20.No.0storagestorescomplementofthetemperaturevalue,andNo.1storessymbolsofthetemperaturevalue.Theusercandefinenon-vo
43、latiletemperaturealarmssetsanddistinguishthealarmssearchorderandseekthecomponenttemperaturealarmsstateoutsidethescheduledlimit.Therearetwoalternativewaysofpowersupply:Signalbushigh-levelborrowpowerisadopted,orthe+5vpowersupplyexternallyisadopteddirectly.DS-18B20數(shù)字溫度傳感器DS-18B20數(shù)字溫度傳感器,該產(chǎn)品采用美國DALLAS公司
44、生產(chǎn)的DS18B20可組網(wǎng)數(shù)字溫度傳感器芯片封裝而成,具有耐磨耐碰,體積小,使用方便,封裝形式多樣,適用于各種狹小空間設(shè)備數(shù)字測溫和控制領(lǐng)域。DS18B20數(shù)字溫度傳感器,具有3引腳TO92小體積封裝形式;溫度測量范圍為55C+125C,可編程為9位12位A/D轉(zhuǎn)換精度,測溫分辨率可達0.0625,被測溫度用符號擴展的16位數(shù)字量的方式串行輸出;其工作電源既可在遠端引入,也可采用寄生電源方式產(chǎn)生;多個DS18B20可以并聯(lián)到3根或2根線上,CPU只需一根端口線就能與諸多DS18B20通信,占用微處理器的端口較少,可節(jié)省大量的引線和邏輯電路。以上特點使DS18B20非常適用于遠距離多點溫度檢測系
45、統(tǒng)。1、技術(shù)性能描述:1)獨特的單線接口方式,DS18B20在與微處理器連接時僅需要一條口線即可實現(xiàn)微處理器與DS18B20的雙向通訊。2)測溫范圍55C+125C,固有測溫分辨率0.5C。3) 支持多點組網(wǎng)功能,多個DS18B20可以并聯(lián)在唯一的三線上,最多只能并聯(lián)8個,如果數(shù)量過多,會使供電電源電壓過低,從而造成信號傳輸?shù)牟环€(wěn)定,實現(xiàn)多點測溫4) 工作電源:35V/DC5) 在使用中不需要任何外圍元件6) 測量結(jié)果以912位數(shù)字量方式串行傳送7)不銹鋼保護管直徑68) 適用于DN1525,DN40DN250各種介質(zhì)工業(yè)管道和狹小空間設(shè)備測溫9) 標準安裝螺紋M10X1,M12X1.5,G1
46、/2任選10) PVC電纜直接出線或德式球型接線盒出線,便于與其它電器設(shè)備連接。2、應用范圍:1) 該產(chǎn)品適用于冷凍庫,糧倉,儲罐,電訊機房,電力機房,電纜線槽等測溫和控制領(lǐng)域2) 軸瓦,缸體,紡機,空調(diào),等狹小空間工業(yè)設(shè)備測溫和控制。3) 汽車空調(diào)、冰箱、冷柜、以及中低溫干燥箱等。4) 供熱/制冷管道熱量計量,中央空調(diào)分戶熱能計量和工業(yè)領(lǐng)域測溫和控制3、產(chǎn)品型號與規(guī)格:型號測溫范圍安裝螺紋電纜長度適用管道TS-18B20-55125無1.5mTS-18B20A-55125M10X11.5mDN1525TS-18B20B-551251/2G接線盒DN40604、接線說明:特點獨特的一線接口,只
47、需要一條口線通信多點能力,簡化了分布式溫度傳感應用無需外部元件可用數(shù)據(jù)總線供電,電壓范圍為3.0V至5.5V無需備用電源測量溫度范圍為-55C至+125C。華氏相當于是-67到257華氏度-10C至+85C范圍內(nèi)精度為i05c溫度傳感器可編程的分辨率為912位溫度轉(zhuǎn)換為12位數(shù)字格式最大值為750毫秒用戶可定義的非易失性溫度報警設(shè)置應用范圍包括恒溫控制,工業(yè)系統(tǒng),消費電子產(chǎn)品溫度計,或任何熱敏感系統(tǒng)描述該DS18B20的數(shù)字溫度計提供9至12位(可編程設(shè)備溫度讀數(shù)。信息被發(fā)送到/從DS18B20通過1線接口,所以中央微處理器與DS18B20只有一個一條口線連接。為讀寫以及溫度轉(zhuǎn)換可以從數(shù)據(jù)線本
48、身獲得能量,不需要外接電源。因為每一個DS18B20的包含一個獨特的序號,多個ds18b20s可以同時存在于一條總線。這使得溫度傳感器放置在許多不同的地方。它的用途很多,包括空調(diào)環(huán)境控制,感測建筑物內(nèi)溫設(shè)備或機器,并進行過程監(jiān)測和控制。DS18B20內(nèi)部結(jié)構(gòu)主要由四部分組成:64位光刻ROM、溫度傳感器、非揮發(fā)的溫度報警觸發(fā)器TH和TL、配置寄存器。該裝置信號線高的時候,內(nèi)部電容器儲存能量通由1線通信線路給片子供電,而且在低電平期間為片子供電直至下一個高電平的到來重新充電。DS18B20的電源也可以從外部3V-5.5V的電壓得到。DS18B20采用一線通信接口。因為一線通信接口,必須在先完成R
49、OM設(shè)定,否則記憶和控制功能將無法使用。主要首先提供以下功能命令之一:1)讀ROM2)ROM匹配3)搜索ROM4)跳過ROM5)報警檢查。這些指令操作作用在沒有一個器件的64位光刻ROM序列號,可以在掛在一線上多個器件選定某一個器件,同時,總線也可以知道總線上掛有多少,什么樣的設(shè)備。若指令成功地使DS18B20完成溫度測量,數(shù)據(jù)存儲在DS18B20的存儲器。一個控制功能指揮指示DS18B20的演出測溫。測量結(jié)果將被放置在DS18B20內(nèi)存中,并可以讓閱讀發(fā)出記憶功能的指揮,閱讀內(nèi)容的片上存儲器。溫度報警觸發(fā)器TH和TL都有一字節(jié)EEPROM的數(shù)據(jù)。如果DS18B20不使用報警檢查指令,這些寄存
50、器可作為一般的用戶記憶用途。在片上還載有配置字節(jié)以理想的解決溫度數(shù)字轉(zhuǎn)換。寫TH,TL指令以及配置字節(jié)利用一個記憶功能的指令完成。通過緩存器讀寄存器。所有數(shù)據(jù)的讀,寫都是從最低位開始。DS18B20有4個主要的數(shù)據(jù)部件:1、 光刻ROM中的64位序列號是出廠前被光刻好的,它可以看作是該DS18B20的地址序列碼。64位光刻ROM的排列是:開始8位(28H)是產(chǎn)品類型標號,接著的48位是該DS18B20自身的序列號,最后8位是前面56位的循環(huán)冗余校驗碼(CRC=X8+X5+X4+1)。光刻ROM的作用是使每一個DS18B20都各不相同,這樣就可以實現(xiàn)一根總線上掛接多個DS18B20的目的。2、
51、DS18B20中的溫度傳感器可完成對溫度的測量,以12位轉(zhuǎn)化為例:用16位符號擴展的二進制補碼讀數(shù)形式提供,以0.0625/LSB形式表達,其中S為符號位。DS18B20的存儲器包括高速暫存器RAM和可電擦除RAM,可電擦除RAM又包括溫度觸發(fā)器TH和TL,以及一個配置寄存器。存儲器能完整的確定一線端口的通訊,數(shù)字開始用寫寄存器的命令寫進寄存器,接著也可以用讀寄存器的命令來確認這些數(shù)字。當確認以后就可以用復制寄存器的命令來將這些數(shù)字轉(zhuǎn)移到可電擦除RAM中。當修改過寄存器中的數(shù)時,這個過程能確保數(shù)字的完整性。高速暫存器RAM是由8個字節(jié)的存儲器組成;第一和第二個字節(jié)是溫度的顯示位。第三和第四個字節(jié)是復制TH和TL,同時第三和第四個字節(jié)的數(shù)字可以更新;第五個字節(jié)是復制配置寄存器,同時第五個字節(jié)的數(shù)字可以更新;六、七、八,三個字節(jié)是計算機自身使用。用讀寄存器的命令能讀
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會有圖紙預覽,若沒有圖紙預覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負責。
- 6. 下載文件中如有侵權(quán)或不適當內(nèi)容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準確性、安全性和完整性, 同時也不承擔用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 玉溪師范學院《數(shù)據(jù)結(jié)構(gòu)與算法》2021-2022學年期末試卷
- 玉溪師范學院《模擬電子技術(shù)實驗》2021-2022學年期末試卷
- 道路運輸企業(yè)主要負責人理論考試題及答案-知識題庫
- 國際金融實務教案
- 第一新聲-2024年中國CRM市場研究報告
- 2024年玻璃石材家具項目成效分析報告
- 2024屆河北省石家莊市晉州一中第一次高中畢業(yè)生復習統(tǒng)一檢測試題數(shù)學試題
- 2024屆廣西壯族自治區(qū)桂林市人教A版高中數(shù)學試題高三二輪函數(shù)的圖象與性質(zhì)測試
- 2024屆廣西欽州市第三中學高三數(shù)學試題3月25日第4周測試題
- 采購合同履約檢查方案
- 2024美團外賣服務合同范本
- 2023~2024學年第一學期高一期中考試數(shù)學試題含答案
- 年度電驅(qū)動石油深井鉆機市場分析及競爭策略分析報告
- 房地產(chǎn)銷售崗位招聘筆試題及解答(某大型國企)2024年
- 非遺漆扇扇子科普宣傳
- GB/T 15822.1-2024無損檢測磁粉檢測第1部分:總則
- 2024-2025學年統(tǒng)編版(2024)道德與法治小學一年級上冊教學設(shè)計(表格版)
- 2024年廣東省高職高考語文試卷及答案
- 一種基于STM32的智能門鎖系統(tǒng)的設(shè)計-畢業(yè)論文
- 七年級歷史教案:林則徐的教學設(shè)計
- 水面垃圾自動打撈船的設(shè)計 (全套圖紙)
評論
0/150
提交評論