【正文】 。（1）在鋼件上套螺紋：MM16。（2）在鑄鐵件上攻螺紋：MM1M121。A稍大于B稍小于C等于四、名詞與代號(hào)解釋題螺距導(dǎo)程M10M201．5五、簡述題成組絲錐中，對(duì)每支絲錐切削用量有哪兩種分配方式？各有何優(yōu)缺點(diǎn)？螺紋底孔直徑為什么要略大于螺紋小徑？套螺紋前，圓桿直徑為什么要略小于螺紋大徑？六、計(jì)算題用計(jì)算法求出下列螺紋底孔直徑。A左旋B右旋C直在鋼和鑄鐵工件上分別加工同樣直徑的內(nèi)螺紋，鋼件底孔直徑比鑄鐵底孔直徑（）。A普通粗牙B普通細(xì)牙C英制不等徑三支一組的絲錐，切削用量的分配是（）。（）螺紋的完整標(biāo)記由螺紋代號(hào)、螺紋公差帶代號(hào)和旋合長度代號(hào)組成。（）螺紋旋向順時(shí)針方向旋入時(shí)，是右旋螺紋。（）專用絲錐為了控制排屑方向，將容屑槽做成螺旋槽。在我國只用于修配，新產(chǎn)品不使用。（）管螺紋公稱直徑是指螺紋大徑。二、判斷題（對(duì)的畫√，錯(cuò)的畫）用絲錐在工件孔中切出內(nèi)螺紋的加工方法稱為套螺紋。螺紋按頭數(shù)分（）螺紋和（）螺紋。螺紋的牙型有三角形、（）形、（）形、（）形和圓形。攻螺紋時(shí)，絲錐切削刃對(duì)材料產(chǎn)生擠壓，因此攻螺紋前（）直徑必須稍大于（）小徑的尺寸。一組等徑絲錐中，每支絲錐的大徑、（）、（）都相等，只是切削部分的切削（）及（）不相等。一、填空題絲錐是加工（）的工具，有（）絲錐和（）絲錐。八、作圖題作出標(biāo)準(zhǔn)麻花鉆橫刃上的前角、后角和橫刃斜角示意圖，并用代號(hào)表示。在厚度為50mm的45鋼板工件鉆φ20mm通孔，每件6孔，共25件，選用切削速度υ=m/min，進(jìn)給量f=0．5mm/r，鉆頭頂角2=120176。A較大的進(jìn)給量和較小的切削速度B較小的進(jìn)給量和較大的切削速度C較大的切削深度五、名詞解釋題切削平面主截面頂角橫刃斜角螺旋角鉆削進(jìn)給量六、簡述題麻花鉆前角的大小對(duì)切削有什么影響？麻花鉆后角的大小對(duì)切削的什么影響？標(biāo)準(zhǔn)麻花鉆切削部分存在哪此主要缺點(diǎn)？鉆削中產(chǎn)生什么影響？標(biāo)準(zhǔn)麻花通常修磨哪些部位？其目的如何？怎樣選擇粗加工和精加工時(shí)的切削液？七、計(jì)算題在一鉆床上鉆φ10mm的孔，選擇轉(zhuǎn)速n為500r/min，求鉆削時(shí)的切削速度。A橫刃斜角減小，橫刃長度增大B橫刃斜角增大，橫刃長度減小C橫刃斜角和長度不變孔的精度要求較高和表面粗糙度值要求較小時(shí)，加工中應(yīng)選用主要起（）作用的切削液。A柱柄B莫氏錐柄C柱柄或錐柄麻花鉆頂角愈小，則軸向力愈小，刀尖角增大，有利于（）。錯(cuò)：正：鉆頭外緣處螺旋角最小，愈靠近中心處螺旋角就愈大。（）鉆孔時(shí)，冷卻潤滑的目的應(yīng)以潤滑為主。（）麻花鉆主切削刃上，各點(diǎn)的前角大小相等的。鉆削中，切削速度υ和進(jìn)給量f對(duì)（）影響是相同的；對(duì)鉆頭（），切削速度比進(jìn)給量f影響大。鉆削時(shí)，釧頭直徑和進(jìn)給量確定后，鉆削速度應(yīng)按鉆頭的（）選擇，鉆深孔應(yīng)?。ǎ┑那邢魉俣?。麻花鉆頂角大小可根據(jù)（）由刃磨鉆頭決定，標(biāo)準(zhǔn)麻花鉆頂角2=（），且兩主切削刃呈（）形。柄部有（）柄和（）柄兩種。麻花鉆一般用（）制成，淬硬至HRC（）。A尺寸B形狀C尺寸和形狀分度頭的手柄轉(zhuǎn)1周時(shí)，裝夾在主軸上的工件轉(zhuǎn)（）。A測(cè)量B劃線C加工一次安裝在方箱上的工件，通過方箱翻轉(zhuǎn)，可劃出（）方向的尺寸線。（）三、選擇題（將正確答案的序號(hào)填寫在括號(hào)內(nèi)）一般劃線精度能達(dá)到（）。（）找正和借料這兩項(xiàng)工作是各自分開進(jìn)行的。（）按不等弦長等分圓周，會(huì)產(chǎn)生更多的積累誤差。（）合理選擇劃線基準(zhǔn)，是提高劃線質(zhì)量和效率的關(guān)鍵。分度頭的規(guī)格是以主軸（）到（）的高度（mm）表示的。前者等分?jǐn)?shù)愈多，其（）誤差愈大。平面劃線要選擇（）個(gè)劃線基準(zhǔn)，立體劃線要選擇（）個(gè)劃線基準(zhǔn)。立體劃線一般要在（）、（）、（）三個(gè)方向上進(jìn)行。在工件上幾個(gè)互成不同（）的表面上劃線，才能明確表示加工界限的，稱為（）劃線。A、軸頸彎曲 B、軸頸斷裂 C、鍵損壞 D、輪磨損帶傳動(dòng)是依靠傳動(dòng)帶與帶輪之間的（C）來傳動(dòng)動(dòng)力的。A、～ mm B、～ mm C、～ mm D、～ mm讀零件圖的第一步應(yīng)看（D），了解其零件概貌。A、改進(jìn) B、修理和調(diào)整 C、修飾 D、檢查劃線時(shí)當(dāng)發(fā)現(xiàn)毛坯誤差不大，但用找正方法不能補(bǔ)救時(shí)，可用（B）方法來予以補(bǔ)救，使加工后的零件仍能符合要求。A、控制扭矩法 B、控制螺栓伸長法 C、控制螺母扭角法 D、控制摩擦力法蝸桿傳動(dòng)機(jī)構(gòu)的裝配，首先要保證蝸桿軸線與蝸輪軸心線（B）。A、前刀面 B、后刀面 C、副后刀面 D、切削平面為達(dá)到螺紋連接可靠和堅(jiān)固的目的，要求紋牙間有一定的（A）。6。通知1．The Student Union is going to hold a party on Saturday evening，August ．The party will be held in th garden of the Main ．We are to visit the museum after ．The meeting starts at 6 ． The American guests are aboutto leave at 5 in the you very much for your was good of you to invite me to take part in the accept my sincere accept my since have to offer you an apology for not ing to your regret that my carelessness has caused you too much 1．I shall feel obliged if you will favor me with a call at your ．Upon receiving this note, pleasee to my ． stands in urgent need of your ．Your note with an admission ticket enclosed is much ．Hoping that the matter will bedealt with as soon as learned from the newspaper that your pany wanted to hire anexperienced am writing to inquire opportunities for puter programmersin your school, I won a scholarship and the first prize in speech work hard and I can get along well with ’m good at Englishand especially my spoken English isvery would wele the opportunity for a personal interview with youat personal interview with you at 1．It would be an honor to me ifyou would accept our ．Will you do us a favor by joiningour party?3．We sincerely hope you can ．Please let us know if you’re ．Thank you for your very kind should love to e, andI am looking forward to it very ．I regret that I have another arrangement at this time and will notbe able to ．I am sorry that I shall not be able to join you because I am badlysick.第五篇：鉗工試題鉗工試題一、填空題（共20分，每空2分）鉗工常用的刀具材料有高速鋼和碳素工具鋼兩大類。MemoFrom: TomTo MaryDate: April 5Subject: Meeting on WTO agreementPlease inform the manager of each department to take part in anurgent meeting on WTO agreement at 3 tomorrow afternoon in theMeeting Hall on the 5th ，告訴他爸爸今天剛從家里來到學(xué)校看他，現(xiàn)在住在學(xué)校賓館3504房，回來后請(qǐng)打3564125電話給他，如果沒人接的話請(qǐng)直接到賓館房間等候。Xiao Wang,Your teacher called to say that the football match tomorrowafternoon was cancelled and it would be held at the same time next are required to take part in the puter operationexam in the ExperimentBuilding tomorrow 以Tom的名義給他的秘書Mary寫一份備忘錄，請(qǐng)她通知各部門經(jīng)理明天下午3點(diǎn)到5樓會(huì)議廳參加關(guān)于WTO協(xié)議內(nèi)容的緊急會(huì)議。March 9, 2006Dear ,I’m writing to tell you about the charge of your pany’s ad..Themarketing made for your pany will be on TV five times aweek and lasts for one minute each the charge for eachtime is 50,000 hope we have chance to cooperate in the sincerelyABC Company以Lily的名義給小王寫一張電話留言條，轉(zhuǎn)告他老師打電話來通知明天下午的足球比賽取消，改在下周二同一時(shí)間舉行。希望雙方以后有機(jī)會(huì)合作。Dear Ann,Thank you so much for the wonderful dinner last night!I had areally good time in your are an amazing am already longing for another you be freenext Saturday evening? I wonder if you could e and have dinnerwith will also invite our friends Joe and 39。事后給朋友寫信表示謝意。August 15, 2006Dear ,The doorbell of the house I rent goes wrong wassomething wrong with it last week but it didn’t work after the send someone to repair it or change it for me or I won’t giveyou rent of the house for this month on to hear from you sincerelyJohn請(qǐng)以Phoebe的名義給假日飯店的經(jīng)理寫一封信，包括以下內(nèi)容；（1）你上周末在該飯店進(jìn)餐時(shí)不慎丟失了一個(gè)紅色手提包，回家后才發(fā)現(xiàn)（2）手提包里有一些零錢，兩本書，個(gè)人身份證等東西（3）請(qǐng)經(jīng)理代為尋找，如有找到，請(qǐng)把包寄回到廣州市東風(fēng)路86號(hào)，聯(lián)系電話81235644，寫信時(shí)間為2006年6月9日。August 25, 2006Dear Professor Huang,We’d like to invite you attend the English Speech Contest whichwill be held in the Speech Hall at 3 topic of thespeech is about the experience of parttime job in summer look forward to your sincerelStu