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1.若进行基础施工,其中挖土方属于_____。
6.下图存在的错误是______。A.多个起点节点B.多个终点节点C.有多余虚工作D.节点编号不对
PartII.ReadingComprehension(阅读理解题)Directions:Thereare3passagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA,B,CandD.YoushouldwriteyouranswersontheAnswerSheet.PassageoneTheLunar(农历的)NewYearisoneofthebiggestandmostimportantholidaysinAsia.InChina,itiscalled“Chunjie”,whichmeans“springfestival”inEnglish.InVietnam,itisknownas“Tet.”AndinKorea,itis“Seollal.”Thesecountriesmarkthecomingyearwithmanysimilaractivities:familyreunions(团圆),cleaningthehome,thecolorred,andtraditionalfoods.Today,welearnaboutfourfoodsconsideredluckyduringtheLunarNewYear.SpringrollsInChina,springrollsareoftenmadeofvegetablesandporkmeat.Thefriedspringrollslooklikelargepiecesofgold.Thefoodisasymbolofwealthandfinancialsuccessforthecomingyear.VietnameseredstickyriceInVietnam,onefoodyouwillfindduringTetisorange-redrice,calledxoi-gac.Itismadewithgac,afruitthatonlygrowsinAsia.Theinsideofthefruitisabeautiful,deepred.Thisgivesxoi-gacitsorange-redcolor.Anditisthefood’scolorthatmakesitespeciallypopularduringTet;redrepresentsluck,happinessandcelebrationinmanyAsiancultures.KoreanricecakesoupNoKoreanNewYearcelebrationiscompletewithouttteokguk,orricecakesoup.Eatingabowlofitissaidtobringapersonalonglife.Eatingtteokgukalsorepresentsgrowinganotheryearolder.Koreansmayaskapersontheiragebysaying“Howmanybowlsoftteokgukhaveyoueaten?”Thesoupincludesvegetablesandthin,roundpiecesofricecake.TheroundshapeissaidtorepresentoldKoreanmoney.So,tteokgukissaidtobringriches,too.FishInmanyplacesinAsia,fishisanotherluckyfoodfortheNewYear.InChinese,thewordforfishsoundslikethewordformoreorextra.So,fishalsorepresentswealth.Tobeespeciallylucky,thereshouldbesomeleftforamealthenextday.ThatsuggestsyourricheswillcontinuethroughouttheNewYear.11.WhatistheLunarNewYearcalledinChina?
1.在图示的回路中,阀1和阀2的作用是()。
PartⅢReadingComprehensionIknowawomanwholikestodogrocery(食品杂货店)shopping,butIalsoknowawholelotofpeoplewhohateit!Peoplewhohateshoppingarelikelytolikesupermarkets,thosehugestoreswherealmosteverythingyouneedtofeedyourfamilyortocleanandmaintain(维持)yourhomeisavailable(现有的)inonelocation(地点).Thesupermarketsavesmebothmoneyandtime.Thelittlecornergrocerystoreisoftenmoreconveniently(方便地)located,pleasantandopenatlatehourswhenthesupermarketisclosed.Butthegrocer(杂货商)mustcharge(收费)youmorethanthebigmarketformostitems(商品)becausehecanonlybuyasmallnumberofcasesatatime;thusthesupermarketcanbuycheaperandcansellcheapertoyou.WhenIenterasupermarketItakeabig,wheeledbasket(带滑轮的购物筐)androllitaroundfromaisle(走廊,通道)toaisle.Freshandfrozen(冷冻的)foods,cannedgoods(罐装食品),boxes,bagsandbottlessoonfillupmycart(购物车).Ialsobuymanynon-food(非食品)itemssuchaspapernapkins(餐巾纸),plasticwraps(保鲜膜)(tokeepfoodfreshunderrefrigeration冰箱),laundrydetergent(洗涤剂),lightbulbs(电灯泡),etc.Somefoodsthathavealreadybeencooked(likechicken)orprepared(likesalads)areavailableinthe"delicatessen"(熟食)section(区域)ofthemarket.Buttheyareoftentooexpensiveformyfoodbudget(预算).Thereisonebigdangerinsupermarketshopping:therearethousandsofitemswithinhand'sreach(触手可得)ontheshelves(货架),allattractively(诱人地)packaged(包装).Thetemptation(诱惑)tobuythingsyoudon'treallyneedorwantisverystrong!Don'tbefooled(糊弄)bythepicturesontheboxes;forexample,aboxwithapictureofabeautifulcakeonitmayonlycontain(包含)acakemix(蛋糕粉).Readthelabels(标签).26.Peoplewhohateshoppingarelikelytolike________.
阶数大于1的群中可以有零元。
设集合A={a,b,c},A上的二元关系R={<a,a>,<b,b>}不具备关系()性质。
1.核算各级政府预算执行总体情况的会计称为()。
1.桩插入土中时的垂直度偏差不超过()。 
一、单选题1.当PN结外加反向电压时,扩散电流()漂移电流,耗尽层变宽。
B
二、对错判断题1.杂质半导体其本征浓度取决于掺杂浓度。
四、计算题
6.【计算题】引入反馈系数为0.1的并联电流负反馈,放大器的输入电阻由1kΩ变为100Ω,则该放大器的开环和闭环电流增益分别为()。
企业处于保本状态时,安全边际率等于0,保本作业率等于1。
只要固定成本不等于0,经营杠杆系数恒大于1。