共查询到20条相似文献，搜索用时 203 毫秒
1.
黄宜尧 《中学英语园地(高三版)》2004,(9)
.从A,B,C,D中选出你所听到的句子中含有的那个单词。(5分).A.IslandB.SideC.InsideD.Beside.A.riceB.priceC.railwayD.bikes.A.intentionB.liberationC.informationD.dictation.A.doctorB.teacherC.workerD.inventor.A.bikeB.wineC.kindD.mindⅡ.根据你所听到的问题,从A,B,C,D中选择正确答语。(5分)6.A.Certainly.Comethisway,please.B.Sure.Hereyouare.C.Ithinkso.D.Yes,itis.7.A.Yes,theyare.B.Nextweek.C.Idon蒺tthinkso.D.No,Ihaven蒺t.8.A.Becausehewantedtodosomethingtokeephimselfbusy.B.Becausehewasateache… 相似文献
2.
水青 《中学英语园地(高三版)》2005,(2)
Ⅰ.根据下列对话情景,从A,B,C,D中选出正确答案。1.—Hi,Tom!Willyoucometomyhousethisevening?—.A.Yes,IdlovetoB.IdontlikeitC.HowoldareyouD.No,Iwill2.—WillyoupleasecometomybirthdaypartythisSaturday?—.A.Yes,IdoB.No,IdontC.Yes,IdlovetoD.No,Illgo3.—WouldyouliketocometodinnerthisSunday,MrSmith?—.A.Oh,no.Letsnot.B.Illstayathome.C.Idloveto,butIhaveotherthingstodo.D.Oh,no.Thatllbetoomuchtrouble.4.—WouldyouliketocomeovertodinnerthisFridayevening?—A.Whattimetogo?B.Idlovetogooneday.C… 相似文献
3.
呼振璞 《中学英语园地(高三版)》2004,(4)
一、听力部分(20分)Ⅰ.从A,B,C,D中选出你所听到的句子中含有的那个单词。(共5小题,计5分1.A.sayB.someC.sameD.safe2.A.hereB.heardC.hearD.hers3.A.moreB.norC.boyD.floor4.A.quiteB.thickC.quickD.quiet5.A.standB.stayC.storeD.storyⅡ.根据你所听到的句子,从A,B,C,D中选出正确答语。(共5小题,计5分)6.A.Hereyouare.B.Thanksalot.C.Seeyoutomorrow.D.Thatsallright.7.A.Imsorrytohearthat.B.Holdon,please.C.Verywell,thankyou.D.Fine,thanks.Andyou?8.A.Itdoesntmatter.B.Yourewelcome.C.Thatsnice.D.Nicetomeet… 相似文献
4.
任民 《中学英语园地(高三版)》2004,(11)
听力部分(20分)Ⅰ.听辨词语(5分)从A,B,C,D中选出你所听到的那个词语。1.A.tapeB.haveC.mapD.some2.A.meanB.moonC.meetingD.meat3.A.OctoberB.DecemberC.SeptemberD.November4.A.porridgeB.villageC.orangeD.passage5.A.bythewayB.inthewayC.onthewayD.onlyawayⅡ.句意理解(5分)根据你所听到的句子,从A,B,C,D中选择正确答语。1.A.Yes,Iagreewithyou.B.No,Idontknow.C.Yes,itsverywarm.D.Whataboutyou?2.A.Thankyou.B.Happybirthdaytoyou.C.Dontsayso.D.Thesametoyou.3.A.Itwasbrown.B.Itwassnowy.C.Iwentbybike.D.… 相似文献
5.
洪斐 《中学英语园地(高三版)》2005,(2)
Mymotherisagoodpolicewoman.Sheworkshardallday.Aftershegetshome,shedoessomecooking,washingandsoon.Everydaysheisverytired,butshenevercomplainsaboutit.Shelovesmeverymuch.Todayismymothersbirthday.Inthemorningshewenttoworkasusual.Iwantedtogiveherapresent.ButIamonlyastudent.Idonthavemuchmoney.Ididntknowwhattodo.SuddenlyIhadeanidea.Iwouldmakeheranicecard.Iwroteonthecard,“Mother,Happybirth-daytoyou.Iloveyou.”Ialsodrawsomepicturesonit.Afterclass,Iwenthomequickly.Oh,Motherwasathomealready.“Go… 相似文献
6.
王世昌 《中学英语园地(高三版)》2003,(12)
听力部分(20分)Ⅰ.听辨单词(5分)从A,B,C,D中选出你所听到的句子中含有的那个单词。1.A.northeastB.southeastC.northwestD.southwest2.A.knowB.knownC.knowingD.respect3.A.presentsB.parentsC.perhapsD.persons4.A.safelyB.centuryC.scienceD.centre5.A.SaturdayB.holidayC.hurriedD.studyⅡ.情景反应(5分)根据你所听到的句子和所提问题,从A,B,C,D中选择正确答案。6.A.Inspring.B.Insummer.C.Inautumn.D.Inwinter.7.A.Theapple.B.Thepear.C.Thebanana.D.Theorange.8.A.Yes,heis.B.No,heisnot.C.Onlyonce.D.Sometime… 相似文献
7.
陈伟凤 《中学英语园地(高三版)》2004,(1)
Ⅰ.根据你所听到的句子及问题,从A,B,C,D中选择正确答案。(5分)1.A.Onthetable.B.Inthecupboard.C.Ontheplate.D.Inthekitchen.2.A.Yes,theyare.B.No,theydont.C.Yes,theydo.D.No,theyarent.3.A.Itisbetweenthetheatreandthebookshop.B.Itisnearthelibrary.C.Itisneartheseanotfarfromhere.D.Itisbetweenthetheatreandtheflowershop.4.A.Anhour.B.Aquarterofanhour.C.Twentyminutes.D.Thirtyminutes.5.A.Cuttingapieceofbeef.B.Washingacoat.C.WatchingTV.D.Cleaningthefloor.Ⅱ.根据你所听到的问句,从A,B,C,D中选择正… 相似文献
8.
习非 《中学英语园地(高三版)》2005,(1)
Ⅰ.单项选择从A,B,C,D中选出正确答案填入空白处。1.ThisisoldpictureofReadfamily.A.an,theB.an,×C.the,×D.the,a2.Thereisabigtreethehouse.A.inB.withC.onD.behind3.—canyouseeontheblackboard?—Apicture.A.WhereB.WhatC.HowD.Who4.Icantfindmybooks.Doyouthem?A.seeB.knowC.lookD.meet5.Lookthecoats.Theylooksame.A.at,theB.like,theC.at,aD.like,a6.Therearetwowindowsthiswallandonepictureit.A.on,onB.in,inC.on,inD.in,on7.Yourmotherisntathome.Pleaseyoursister.A.lookB.lookatC.looklikeD.lookafter8.W… 相似文献
9.
10.
黄宜尧 《中学英语园地(高三版)》2004,(10)
Ⅰ.根据你所听到的问句,从A,B,C,D中选出正确答语。(5分)1.A.Lastyear.B.OnJuly1st,1921.C.OnAugust1st,1927.D.OnOctober1st,1949.2.A.Yes,Ido.B.No,Idon蒺t.C.Yes,wehave.D.It蒺sinBeijing.3.A.WeknowitwasmadeinShanghai.B.Becausesatellitescanhelpuslearnmoreabouttheearth,theweatherandotherthings,andhelpussendandreceivemessages.C.Sorry,wehaven蒺t.D.Yes,wehave.4.A.About31,198,000.B.Thereare31,198,010,000.C.It蒺snearAmerica.D.Thankgoodness.5.A.Hereyouare.B.It蒺sabout800yuan.C.It蒺smadeinJapan… 相似文献
11.
本研究以全钒液流电池储能系统为研究对象,通过电力系统分析综合程序建立了包含能量限制模块的全钒液流电池储能系统模型。综合考虑了储能系统换流器的容量大小、荷电状态等因数,通过仿真分析对比两种控制策略以及模型在不同大小的储能电池中的适用性,验证了理论分析的准确性及模型的工程实用性。仿真结果表明,该模型既能通过限制无功功率传输保证传输的能量不超出换流器容量,又能根据实际有功功率大小调整无功功率上限,充分发挥储能系统的调节作用。 相似文献
12.
Jun-yi LIANG Jian-long ZHANG Xi ZHANG Shi-fei YUAN Cheng-liang YIN 《浙江大学学报(A卷英文版)》2013,14(8):535-553
To solve the low power density issue of hybrid electric vehicular batteries, a combination of batteries and ultra- capacitors （UCs） could be a solution. The high power density feature of UCs can improve the performance of battery/UC hybrid energy storage systems （HESSs）. This paper presents a parallel hybrid electric vehicle （HEV） equipped with an internal combus- tion engine and an HESS. An advanced energy management strategy （EMS）, mainly based on fuzzy logic, is proposed to improve the fuel economy of the HEV and the endurance of the HESS. The EMS is capable of determining the ideal distribution of output power among the internal combustion engine, battery, and UC according to the propelling power or regenerative braking power of the vehicle. To validate the effectiveness of the EMS, numerical simulation and experimental validations are carried out. The results indicate that EMS can effectively control the power sources to work within their respective efficient areas. The battery load can be mitigated and prolonged battery life can be expected. The electrical energy consumption in the HESS is reduced by 3.91% compared with that in the battery only system. Fuel consumption of the HEV is reduced by 24.3% compared with that of the same class conventional vehicles under Economic Commission of Europe driving cycle. 相似文献
13.
Induction motor faults including mechanical and electrical faults are reviewed. The fault diagnosis methods are summarized. To analyze the influence of stator current, torque, speed and rotor current on faulted bars, a time-stepping transient finite element (FE) model of induction motor with bars faulted is created in this paper. With wavelet package analysis method and FFT method, the simulation result of finite element is analyzed. Based on the simulation analysis, the on-line fault diagnosis system of induction motor with bars faulted is developed. With the speed of broken bars motor changed from 1 478 r/min to 1 445 r/min, the FFT power spectra and the wavelet package decoupling factors are given. The comparison result shows that the on-line diagnosis system can detect broken-bar fault efficiently. 相似文献
14.
商用车发动机起动功率及电气产品功能的增加,带来整车耗电量急剧增大。迫使一些车辆改用双组电瓶并联或轮流供电,由于两组电瓶并联放电使用时电瓶的性能差别会造成过多的自放电损耗,直接影响到电瓶使用寿命,双组电瓶并联充电时会导致车辆充电系统过载故障甚至损坏充电电路部件。设计该电路,能够根据电瓶电量情况自动切换给双组电瓶分别充电及控制放电,使车辆充电系统及电瓶工作在最佳状态,能够长期保持两电瓶电量充足,克服目前部分车辆采用的手动切换方式,影响电瓶使用寿命的弊端。 相似文献
15.
ZHANG Qi XIE Guo dong 《上海大学学报(英文版)》1999,3(4):299-303
１ Ｉｎｔｒｏｄｕｃｔｉｏｎ Ｈｉｇｈｐｏｗｅｒｆａｃｔｏｒｉｎｄｕｃｔｉｏｎｍｏｔｏｒｗｉｔｈｆｌｏａｔｉｎｇｗｉｎｄｉｎｇｉｎｐａｒａｌｌｅｌｃｏｎｎｅｃｔｉｏｎｗｉｔｈｃａｐａｃｉｔｏｒｓｉｓａｍｏｔｏｒｏｆｓｐｅｃｉａｌｓｔｒｕｃｔｕｒｅａｎｄｗｉｔｈｓｐｅｃｉａｌｃｏｎｎｅｃｔｉｏｎ．Ｉｔｓｓｔａｔｏｒｃｉｒｃｕｉｔｃｏｎｆｉｇｕｒａｔｉｏｎ［１］ｉｓｓｈｏｗｎｉｎＦｉｇ．１．Ｆｉｇ１ｓｈｏｗｓｔｗｏｓｅｔｓｏｆｓｔａｔｏｒｗｉｎｄｉｎｇｓ,ｔｈｅｐｏｗｅｒｗｉｎｄｉｎｇｓｃｏｎｎ… 相似文献
16.
针对新能源发电与并网技术课程实验教学设备不能满足教学需求的问题,构建光伏发电并网系统虚拟仿真实验项目。首先,通过StarSim软件搭建仿真电路模型;其次,通过设置太阳辐照度、电池组件并联组件数,改变光伏发电功率;最后,采用Boost升压斩波电路,调节光伏阵列的端电压,进而实现光伏阵列的最大功率点跟踪。 相似文献
17.
The primary focus of this study is to investigate the control strategies of a hybrid system used in hydraulic excavators. First, the structure and evaluation target of hybrid hydraulic excavators are analyzed. Then the dynamic system model including batteries, motor and engine is built as the simulation environment to obtain control results. A so-called multi-work-point dynamic control strategy, which has both closed-loop speed PI （proportion integral） control and direct torque control, is proposed and studied in the simulation model. Simulation results indicate that the hybrid system with this strategy can meet the power demand and achieve better system stability and higher fuel efficiency. 相似文献
18.
为了研究汽车能耗和汽车质量之间的关系,本文首先建立了仿真的目标,即以内燃机驱动、混合动力驱动和氢燃料驱动的车辆为研究对象,对这3种不同的研究对象又分别选取了3种类型的车辆。根据仿真目标建立了汽车仿真模型,并在MATLAB/SIMULINK环境下实现。仿真结果表明,汽车能耗随着质量减少而减少,驱动方式、车型、传动等因素对油耗也有很大的影响。 相似文献
19.
基于某款纯电动汽车整车性能要求进行了关键部件的参数匹配,通过搭建CRUISE模型在NEDC工况下的仿真验证了参数匹配的合理性。基于ISIGHT和CRUISE联合仿真,以续驶里程为优化目标,以主减速比和动力电池的并联电池组数为优化变量,采用NSGA-II算法进行了优化分析,优化结果显示,此款纯电动汽车续驶里程得到了有效提升,且动力性也满足预定要求。 相似文献
20.
讨论以发动机最佳燃油经济性或电动机最佳效率为控制目标的动力转换控制策略,以油门踏板位置及蓄电池SOC状态为输入变量,设计了混合动力汽车动力转换模糊控制器,建立了整车控制仿真模型。文中阐述了由电机切换到发动机工作时发动机的起动、调速控制,以及离合器快速平稳地结合的过程。仿真结果表明：对转换车速的门限值控制模糊化能够使转换车速更加符合驾驶员对动力性的要求。 相似文献