課文解析：難點(diǎn)：1.通過上下文進(jìn)行維修邏輯推理；2.用英語描述自檢電路的工作特征。重點(diǎn)：1.故障診斷的程序英語描述；2.交流電路放大器工作原理的英語表述。VocabularyStudy1詞匯學(xué)習(xí)1abnormality[??bn??'m?l?t?]n.異常amplifier ['?mpl?fa??] n.放大器analog ['?n?l?g] a.模擬的anticlockwise [??nt?'kl?kwa?z]ad.逆時針地backbreaking ['b?k?bre?k??]a.費(fèi)力地capacitor [k?'p?s?t?]n.電容器diameter [da?'?m?t?]n.直徑

dint [d?nt] n.凹痕formidable ['f??m?d?bl] a.艱難的fuse [fju?z] n.保險絲horizontal [?h?r?'z?ntl] a.水平的interlock [??nt?'l?k] n.連鎖gauge [ge?d?] vt.測量 n.計(jì)量器prematurely

['prem?'t??l?]

ad.過早地

VocabularyStudy2詞匯學(xué)習(xí)2rectifier ['rekt?fa??] n.整流器resistance [r?'z?st?ns] n.電阻solder ['s?ld?] vi.焊接substitute ['s?bst?tu?t] n.代替thermostat ['θ??m??st?t] n.恒溫器thyristor [θa?'r?st?]n.半導(dǎo)體閘流管triode ['tra???d]

n.三極管

troubleshoot ['tr?bl?u?t] vt.故障診斷tutorial [tju?'t??r??l] n.指導(dǎo)vertical ['v??t?kl] a.垂直的walkie-talkie [?w??k?'t??k?]n.無線電話機(jī)

PhrasesStudy1短語學(xué)習(xí)1ACmotor交流電動機(jī)adjustableresistor可調(diào)電阻器，滑動電阻器callfor

需要commonearthing公共接地controlswitch控制開關(guān)主令開關(guān)DCmotor

直流電動機(jī)faceplate

面板PhrasesStudy2短語學(xué)習(xí)2full-wave-rectifying全波整流Gotit.明白。Ireckon…

我認(rèn)為…instructionbook

說明書InternetEnquiry

因特網(wǎng)查詢inthatcase在那種情形下jointrepair聯(lián)合維修PhrasesStudy3短語學(xué)習(xí)3makeatrialoperation試運(yùn)行Rightaway.

立刻。/馬上。SCR(SiliconControlledRectifier)可控硅servicepanel業(yè)務(wù)面板solerepair

單一修理stemnut螺桿螺母Thatisthedeal.就這么定了。PhrasesStudy4短語學(xué)習(xí)4ToolboxTalk

班前會；工前安全會Unbelievable!

難以置信！wallmountedelectricheater

掛墻式電加熱器OralPresentation第一部分口語展示PartIExerciseSamples練習(xí)樣本PartIOralPresentation

口語展示HowtoTroubleshootandRepairYourWallMountedElectricHeaterElectricheatersaresomeofthemostreliableheatersavailable.Butsometimestheydohaveproblemsandyouneedtotroubleshootthem.Thistutorialwilllookatthepossibleissuesyoumayrunintoandhowtofixthem.Thefollowingsamplesareguidesforyourrepairwork.

如何進(jìn)行故障診斷和修理掛墻式電加熱器電加熱器是可利用的最可靠的加熱器之一。但有時它可能會出現(xiàn)問題，你就需要對它進(jìn)行故障診斷。本指導(dǎo)涉及可能遇到的問題以及如何修理。接下來的案例會為你的修理工作提供指導(dǎo)。PartIOralPresentation

口語展示Symptom:Heatersmellslikesomethingisburning.PossibleCause(S):Dirtyheatingelementisburning,suchaslintorhair.PossibleRepair(S):Dryheatingelementsburnoutprematurelyarethemainreasonandcanbedangerous.Carefullyvacuumthedint,dust,lintandhairfromtheunit.

故障現(xiàn)象:暖氣聞起來像是有什么東西燒著了?？赡艿脑颍号K了的發(fā)熱材料在燃燒，如棉花或是毛發(fā)。可能的修理方法：臟了的發(fā)熱材料未全部燃燒是主要原因，還會有危險。仔細(xì)地用吸塵器吸出污垢、灰塵、棉花和毛發(fā)。PartIOralPresentation

口語展示Pleasemakesurepoweristurnedofftotheelectricheaterattheservicepanelbeforeopeninguptheunitforcleaning.Oncepoweristurnedofftotheheater,removetheheatercontrolknobandiftheunithasaseparatethermostat,removethethermostatknob,andloosentheknobstemnutsandfaceplatemountingscrewsandremovetheunitfromthewall.在打開裝置清潔前，請確認(rèn)控制面板上的電加熱器電源已關(guān)閉。當(dāng)電加熱器電源關(guān)閉后，拆下加熱器的控制按鈕，如果裝置有分體式的恒溫器，將恒溫器的旋鈕移開，松開旋鈕螺母和面板固定螺釘，并從墻上移開部件。PartIOralPresentation

口語展示Ifnecessary,removetheunitfromthewallandopenupthecabinettoaccesstheheatingelementscompletely.如果必要的話，從墻上移開部件，并完全打開封閉箱來清潔加熱裝置。SimpleSentenceRecognition第二部分簡單句辨識PartIIExerciseSamples練習(xí)樣本PartIISimpleSentenceRecognition

簡單句辨識1.Thecheckofanamplifierstartsfromthefinalstage.A.Thecheckofanamplifierstartsfromthefirststage.B.Thecheckofanamplifierstartsfromthesecondstage.C.Thecheckofanamplifierstartsfromthefinalstage.D.Thecheckofanamplifierstartsfromthefinalstagebutone.PartIISimpleSentenceRecognition

簡單句辨識1.Thecheckofanamplifierstartsfromthefinalstage.放大器的檢查從最后一級開始。A.Thecheckofanamplifierstartsfromthefirststage.放大器的檢查從第一級開始。B.Thecheckofanamplifierstartsfromthesecondstage.放大器的檢查從第二級開始。C.Thecheckofanamplifierstartsfromthefinalstage.放大器的檢查從最后一級開始。D.Thecheckofanamplifierstartsfromthefinalstagebutone.放大器的檢查從倒數(shù)第二級開始。PartIISimpleSentenceRecognition

簡單句辨識1.Thecheckofanamplifierstartsfromthefinalstage.放大器的檢查從最后一級開始。A.Thecheckofanamplifierstartsfromthefirststage.放大器的檢查從第一級開始。B.Thecheckofanamplifierstartsfromthesecondstage.放大器的檢查從第二級開始。C.Thecheckofanamplifierstartsfromthefinalstage.

放大器的檢查從最后一級開始。D.Thecheckofanamplifierstartsfromthefinalstagebutone.放大器的檢查從倒數(shù)第二級開始。SimpleContexts第三部分簡單語境對話PartIIIExerciseSamples練習(xí)樣本PartIIISimpleContexts

簡單語境對話A.Theyplayedafterwork.B.TheymetChiefEngineerjustbefore.C.Theyhaddonearepairwork.D.Theyhadameetingjustbefore.PartIIISimpleContexts

簡單語境對話A.Theyplayedafterwork.他們在工作之后玩了。B.TheymetChiefEngineerjustbefore.他們剛剛見了輪機(jī)長。C.Theyhaddonearepairwork.他們進(jìn)行了修理工作。D.Theyhadameetingjustbefore.他們剛剛開會了。PartIIISimpleContexts

簡單語境對話A.Theyplayedafterwork.他們在工作之后玩了。B.TheymetChiefEngineerjustbefore.他們剛剛見了輪機(jī)長。C.Theyhaddonearepairwork.

他們進(jìn)行了修理工作。D.Theyhadameetingjustbefore.他們剛剛開會了。OralTopics第五部分口語陳述PartVExerciseSamples練習(xí)樣本PartVOralTopics

口語陳述1.Describetroubleshooting.A.Partofinstructionbook.B.Styleofinstructionbook.C.Trouble-removalaccordingtothetroubleshooting.PartVOralTopics

口語陳述1.Describetroubleshooting.描述故障檢修。A.Partofinstructionbook.指導(dǎo)手冊的部分。B.Styleofinstructionbook.指導(dǎo)手冊的格式。C.Trouble-removalaccordingtothetroubleshooting.根據(jù)故障診斷去除故障。PartVOralTopics口語陳述

Thetroubleshootingisaninstrumenttogetridofthetrouble.Itisusuallywrittendowninthetroubleshootingsectionoftheoperationalmanual.Thestylesoftheinstructionbookarenormallylistedinatrouble-shootingtable,shownasfollows.Thecolumnoneisalistofsymptomsofthetrouble.Thecolumntwoisthepossiblecausesofthetrouble.Thecolumnthreeisremediesorsolutions.Forsomemanufacturers,therearealsoadditionalcolumnstoshowpossiblelocationswhichrelatedtoappropriatetroubles.Professionaltechniciansinthemanufacturersarechosentolistthoseitemsoftroublea