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Description: 《管状换热器计算机辅助设计系统ExhCAD绘图系统(版本:1.01a
Final)》为自由软件，采用增量软件开发模型，并用UML对软件进行
建模，以便更新。
该版本只是对换热器的最简单的形式做出设计，而且程序在计算
(包括设计、校核两部分，其中校核部分未编)、绘图过程中都作了简
化，虽然采用了参数化绘图，并能进行简单的数据管理，但没有考虑
换热器的插入件、安装(待编)等因素的影响，特别是在绘图中用
Automatuion技术绘制了管子部分,并对一些常用图形设计了图库，以
方便操作，后采用Object Arx详绘！由于水平和时间、精力等因素，软
件肯定有不少的Bug，但这是我的第一次尝试，希望能得到高手的指点。
设计出的换热器适应于冶金企业中使用，尤其是工业加热炉的余
热回收；以金属直、光管为传热介质，空气在管内流动，烟气在管外
流动。考虑实际情况，大多数换热器采用逆流，按照实际要求，本软
件在设计时做了些简化处理，但仍然能满足工程需要。
配置要求：主机在486以上，操作系统为Windows 98以上。如果要
使用完整功能，则需要装有AutoCAD R14、Microsoft Excel 2000、
Microsoft Access 2000。-"tubular heat exchanger computer-aided design system ExhCAD Mapping System (Version : Final 1.01a)," free software, using incremental software development model, and the UML modeling software to update. The release of heat exchanger is the most simple design made in the form and the procedures in the calculation (including design, verification of two parts, which some non-checking), the mapping process has been simplified, although the parameters of graphics, and simple data management, but did not consider the heat exchanger The inserts, installation (to be ed.), the impact of such factors, especially in the graphics rendering technology used Automatuion the tubes, as well as some commonly used graphics library designed to facilitate the operation, after using Object Arx detaile
Platform: |
Size: 10520487 |
Author: 东方神眼 |
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Description: 基于MCS-51单片机的数字钟设计
[摘要] III
[ABSTRACT] IV
引言 1
1绪论 2
1.1 集成电路 2
1.2 主要技术的背景 2
1.2.1 发展历史 2
1.2.2 现状 3
1.2.3 发展趋势 3
2器件简介 4
2.1 LED显示器 4
2.1.1 LED显示器的结构 4
2.1.2 LED的接线形式 5
2.2 AT89C52简介 5
2.2.1 AT89C52主要性能参数： 5
2.2.2 AT89C52单片机的功能特性概述： 6
2.3 DS1302芯片 9
2.3.1 DS1302的性能特性： 9
2.3.2 DS1302数据操作原理 10
2.4 74LS164－八位移位寄存器 14
2.4.1 74LS64简介 14
2.4.2 74LS164逻辑介绍： 15
3硬件电路 17
3.1 线路的设计 17
3.1.1 电源转换模块 18
3.1.2 主控制模块 18
3.1.3 显示模块 19
3.1.4 键盘接口设计 20
3.2 电路图的绘制 20
3.3 电路板的焊接 20
3.4 打开电源前应注意的问题 20
4软件设计部分 21
4.1 阳历程序的设计 21
4.2 时间调整程序设计 21
4.3 阴历程序设计 23
5调试 28
6小结 29
7致谢 30
8参考文献 31
9附录 32
-based on MCS-51 microcontroller design of the digital clock III [Abstract] [ABSTRACT] IV INTRODUCTION Introduction 2 1 1 2 1.2 1.1 IC main technical background history 1.2.1 2 2 1.2. 1.2.3 Situation 2 3 3 2 trends Device Profile 4 2.1 4 LED Displays 2.1.1 LED Display The structure of the four 2.1.2 Connection form LED 5 2.2 5 2.2.1 Introduction AT89C52 AT8 9C52 main performance parameters : 5 2.2.2 AT89C52 outlined in the functional properties : 6 2.3 9 2.3.1 Chip DS1302 DS1302 performance characteristics : 9 2.3.2 DS1302 data operation principle 10 2.4 74LS164-8 shift register 14 74LS64 14 2.4.1 Introduction 2.4.2 74LS164 logic presentations : 15 3 17 3.1 hardware circuit design lines 17 Power Conversion Module 3.1.1 3.1.2 Main Control 18 Module Module 18 3.1.3 3.1.4 keyboard interface 19
Platform: |
Size: 228808 |
Author: 李爱春 |
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Description: 该系统测试用户信息主要由数据库直接输入，考试时考生输入准考证号码，核对正确后进入考生界面，考生界面主要有选择科目、成绩查询、考试新闻、留言版组成，关键实现了考生在选择科目后进入考试窗体，考试计时，考试时间到，系统强制考生退出，及考完后对客观题的自动评分、存档。管理员进入管理员界面，管理员界面主要由科目管理、题库管理、试卷生成、用户管理等模块组成，管理员的新闻界面实现一般新闻和系统提示两部分，系统提示部分显示未审批的考试计划和新闻信息以及作废的操作链接。老师或者领导登陆后实现新闻标题下面多了一个系统提示部分，该部分显示未审批的考试计划或者新闻以及还未批改的主观题信息，并附有审批及批改等操作链接。
-testing of the system user information mainly imported directly from the database exam candidates importation ticket number, After checking into the correct candidates interface, the interface main candidates to choose subjects, results inquiries, examinations news, message board composition, The key achievement of candidates in choosing subjects entered Form examinations, the examination time, the examination time to the candidates to withdraw from the mandatory system, and after the arrival of the objective that the automatic scoring, archiving. Administrators enter the administrator interface, the administrator interface from the main subjects management, paper management, test generation, user management modules, the administrator interface to achieve the general news and prompted two
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Size: 700833 |
Author: 扒拉 |
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Description: 使用51系列单片机（AT89S52）控制LCD（12864）,全菜单化操作控制初始时间输入，并以指针+数字形式或纯数字形式显示当前时间（年月日周时分秒）及温度（±XXX.XXXX），工程需要环境为keil Uvision2，其中包含以下各模块的C语言驱动程序：x5045,8255c,ATM12864,ds1302,ds1820,8键键盘(74LS164控制)-The use of 51 series single-chip microcomputer (AT89S52) control LCD (12864), the entire menu of operational control of the initial time input, and to guide+ Digital form or pure digital form displays the current time (day of week, minutes and seconds) and temperature ( ± XXX.XXXX), works for the needs of the environment keil Uvision2, which includes the following modules of the C language driver: x5045, 8255c, ATM12864, ds1302, ds1820, 8 keys keyboard (74LS164 control)
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Size: 598016 |
Author: 赵奇 |
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Description: 简易学生信息管理系统
程序实现思路：
先创建一个学生元素类，用于存放学生的各种数据。然后创建一个堆(heap)类，把数据以堆的形式存储，可便进行堆排序及各种操作。最后再用一个类(class priQueue)包装了heap类，以方便主函数调用。本程序中比较核心的技术就是用到了堆排序，将学生按优先级（高的排前面，低的排后面）的大小进行有序排列。堆排序的时间复杂度较一般排序（如：冒泡，选择等）来得低，可使程序显示数据时效率更高。-Simple Student Information Management System program ideas: the first element to create a student class, students used to store various data. And then create a stack (heap) type, the data in order to stack the form of storage, can be carried out and various operation HEAPSORT. Finally, re-use a class (class priQueue) type of packaging the heap in order to facilitate the main function call. Comparison of this procedure is the core technology used in the heap sort students by priority (high in front of the row, low row behind) the size of orderly arrangement. HEAPSORT time complexity of a more general sort (eg: bubble, choose, etc.) too low, the procedure can show the data more efficient.
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Size: 136192 |
Author: est |
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Description: 实现双向链表所存储线性表的各种操作。要求提供数据的插入、删除、查找、两个数据交换、求所有数据平均值、最大值、最小值的操作。先利用随机函数产生100个随机整数，建立线性表的存储结构，然后完成上述的功能。分析程序的时间、空间复杂度。-Achieve bi-directional linear list stored various operating table. Request for data insert, delete, search, both for data exchange, and all the data average, maximum, minimum operation. First using random functions to generate 100 random integers, set up the linear form of storage structure, then the completion of the above-mentioned functions. Analysis procedure time and space complexity.
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Size: 2048 |
Author: 黄啸尘 |
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Description: 电子时钟的设计 用汇编语言实现一个显示系统时间和日期的程序，运行时，在屏幕的中央弹出一个界面显示当前操作，将以“时：分：秒”和“年：月：日”和的形式显示本机系统的时间日期:
输入D时在界面方框中显示本机系统的当前日期.
输入T时在界面方框中显示本机系统的当前时间..
3.输入Q时退出.-Electronic clock assembly language designed to achieve a display system time and date of the program, run-time, the central pop-up screen shows the current operation of an interface will be " when: min: sec" and " years: months: days" and The form of the local system time to date: D when the input box in the interface shows the current local system date. enter the T box in the interface shows the current local system time .. 3. to withdraw from the Q input.
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Size: 95232 |
Author: 周 |
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Description: 一个测试用友华表cell控件的程序示例。可以全面的学习cell控件的基本用法，使你在最短的时间掌握该控件的用法。主要操作包括打开cll文件、写入文件、计算表格数据等-UF Chinese table cell a test procedures for the control sample. To fully study the basic usage of cell control, so that you in the shortest possible time to grasp the control usage. Cll major operations, including open files, write files, calculate form data, etc.
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Size: 5012480 |
Author: zml |
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Description: 在手持设备上编写计算个人所得税的程序。要求：输入金额，显示输出个人应交的所税。相关的各项参数，包括扣税基数以及各税率可由用户调整。
.NET Compact Framework使得熟悉.NET Framework的程序员得以用他们熟知的C#或者VB来开发移动设备上的程序。基于 .NET CF的 Windows forms应用程序其设计目标之一就是减少窗体加载的时间。在 Form的初始化函数 (通常是 InitializeComponent(),，要尽量减少调用方法的数量。另外，尽量不要在 Form的 Load()或者 Show()的方法中进行一些读取数据的操作，那些必要的数据可以在最开始，或者集中的某个操作中完成，或者采用异步的方式在后台完成。-. NET Compact Framework makes the familiar. NET Framework for programmers to be familiar with their C# or VB to develop procedures for mobile devices. Based. NET CF for Windows forms applications designed to form one of the goals is to reduce the load time. In the Form of the initialization function (usually the InitializeComponent (),, to minimize the number of method calls. Also, try not to in Form s Load () or Show () method to read data in some operations, those necessary The data can be in the beginning, or the concentration to complete an operation, or asynchronous mode with completion in the background.
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Size: 40960 |
Author: helen |
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Description: 随着家长对孩子教育方面的不断重视，教育行业在人民心中的地位越来越重，老师们的负担与压力也越来越重。如何减轻老师的负担及压力，已经成为广大学校校长需要解决的头号难题。
在教育工作中，为学生考试出试卷和批改改卷是老师们最头痛的，不仅消耗大量的时间，而且消耗大量的精力体力。因此，考试过程由人工操作转向计算机操作是必然的结果。
根据学生考试的特点和学校的实际情况，该系统应以考试流程为基础，从专业角度出发，提供科学有效的考试模式。考试时采用系统自动从数据表中选题的方式，评卷时通过核对考生答案与正确答案得出考生的分数，出题方面采取表单加数据的方式使后台管理者能够直观、方便的管理试题信息。学生管理可实现老师对学生的成绩进行查询，按分数归类。数据库管理提供对数据库进行备份，还原及初始化操作，减轻用户的工作量。
操作注意事项
（1）本系统默认操作员用户名为：tsoft，密码为：111。
（2）可执行文件位置：09\源程序\Debug\ExamOnline.exe
（3）每个科目，每个学生只可以考一次，不可多次考试。
（4）考试时间系统默认为1小时。
-As for parents to their children education with the constant attention, education industry in people s heart status more and more heavy, teachers burden and pressure is also more and more heavy. How to reduce the burden of teacher and pressure, has become the school principal need to solve the number one problem.
In the education work, for students test out of papers and change a volume is the most teachers of headache, not only consume large amounts of time, and consume large amounts of energy physical strength. Therefore, the test process by artificial operation into computer operation is inevitable result.
According to the characteristics of students test and actual condition of the school, this system should be based on the test process, from professional Angle, provide scientific and effective examination mode. The automatic test system from the data table topic in the way, when examinee answer by marking takes check with the correct answer that examinees, to add data form the
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Size: 566272 |
Author: prince |
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Description: 冒泡排序操作,将x插入到线性表的适当位置上以保持线性表的有序性，并且分析算法的时间复杂度.-X is inserted into the appropriate position of the linear form in order To bubble sort operations,to maintain the order of the linear form , and analyze the time complexity of algorithm
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Size: 224256 |
Author: Poline |
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Description: VB最酷百例系列书稿源代码，一共有100个源代码，这些源代码涉及到窗体、图像处理、鼠标键盘、数据库、文件操作、日期时间操作，Windows相关控制、动画制作、三维图形相关，系统托盘等。这些源码单个都比较小，主要是针对某个功能的实现而编写，简单的源码对于初学VB的新手来说，是值得一看的编程资料，VB最酷百例系列书稿源代码下载分享给VB爱好者。-VB coolest series of one hundred cases of the manuscript source code, a total of 100 source code, the source code related to the form, image processing, mouse, keyboard, database, file operations, date and time of operation, Windows related control, animation, three-dimensional graphics related , the system tray. Source individual are relatively small, mainly aimed at the realization of a function to write a simple source is the worth of programming information for the novice beginner VB, VB coolest one hundred cases of series of manuscript source code download share VB enthusiasts.
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Size: 999424 |
Author: |
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Description: todoyu是一个PHP开源的任务/项目管理系统，时间跟踪和协作开发应用程序。它拥有一个流行的Ajax操作界面，在每个项目上都可以有用户和客户。在todoyu中，项目被分成带子任务的多个里程碑并分配给用户。每个任务发费的时间将被记录。
todoyu 2.3 为所有内容增加了扩展宽度，对表单域进行即时的数据验证，支持SMTP帐号，对过期条目以醒目图标指示，项目表单中的公司名支持自动完成，评论的新外观等等。-todoyu is a PHP open source task/project management system, time tracking and collaborative development of applications. It has a popular Ajax user interface, each project can have users and customers. The project is divided into the strap task multiple milestone in todoyu assigned to the user. The time of each task fat fee will be recorded. todoyu 2.3 for all content to increase the expansion of the width of real-time data validation on form fields, support SMTP account expired entries to the eye-catching icon indicating the company name in the project in the form supports auto-complete, the comment new look.
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Size: 4998144 |
Author: 榕树 |
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Description: 在教育工作中，为学生考试出试卷和批改改卷是老师们最头痛的，不仅消耗大量的时间，而且消耗大量的精力体力。因此，考试过程由人工操作转向计算机操作是必然的结果。
根据学生考试的特点和学校的实际情况，该系统应以考试流程为基础，从专业角度出发，提供科学有效的考试模式。考试时采用系统自动从数据表中选题的方式，评卷时通过核对考生答案与正确答案得出考生的分数，出题方面采取表单加数据的方式使后台管理者能够直观、方便的管理试题信息。学生管理可实现老师对学生的成绩进行查询，按分数归类。数据库管理提供对数据库进行备份，还原及初始化操作，减轻用户的工作量。经过修改，可以运行，欢迎使用！-In educational work, as examinations of students out of the papers and marking correcting their biggest headache is the teacher, not only consume a lot of time and consume a lot of physical energy. Therefore, the examination process by the computer' s operating manual steering is the inevitable result. According to the characteristics of the students and school examinations of the actual situation, the system should be based on a process-based exam, from a professional point of view, to provide scientific and effective mode of examination. Examination using the system automatically from the data table topics manner marking time by checking the candidates answer with the correct answer drawn scores of candidates, the question has taken the form plus a way that the background data managers to intuitive, easy management questions Information. Student management enables the teacher on student achievement query, grouped by score. Database management provides the database backup, restore
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Size: 4727808 |
Author: 小鲵 |
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Description: 文件及其操作在程序设计中是非常重要的内容，合理地对其进行利用，可以大大扩展程序的应用范畴和功能。在计算机系统中，文件是一种宝贵的资源和手段，例如我们编写的源程序就需要以文件的形式保存起来，以便能在不同的时间和地点重复地利用。在程序中使用文件操作，可以对文件进行加工处理，或者创建新的文件，使程序的数据得以永久的保存及再利用-File and its operation is a very important element in the program design, its rational use, can greatly extend the application scope and functions of the program. In computer systems, files are a valuable resource and means, for example, we need to save the source code written in the form of files together so that you can repeatedly use at different times and locations. Used in the program file operations, you can file processing, or create a new file, so that the data can be permanently stored procedures and reuse
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Size: 24576 |
Author: nicefore |
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Description: vb.net时制转换，时间格式转换：把12小时制转换成24制时间显示出来，并执行加1秒的操作，挺简单的时间操作程序，VB新手可作为一个例子来学习，程序生成了了EXE窗体文件，双击可直接运行。-vb.net when the system conversion, time format conversion: convert 12-hour time display up to 24, plus one second and perform operations very simple time operating procedures, VB novice as an example to learn, the program generates a form the EXE file, double click to run.
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Size: 18432 |
Author: cpudn79 |
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Description: 集功能完善的直播系统、访谈系纺、网友留言系统、新闻发布系统于一身的网站综合管理系统，它适用于有对外发布信息需要的企事业单位（行政事业版）、媒体网站对外发布信息和在线访谈（媒体访谈版）、证券从业人员及有股市操作经验的分析师在一定范围内发布内幕文章、言论，提醒和指导会员交易、交流互动学习的平台（金融证券版）。其中行政事业版和媒体发布版是开放形式互动交流，而金融证券版是会员制的互动交流，会员在有效时间内可进行跟综，浏览、互动的学习交流。
星火直播系统不仅有直播访谈功能，更是一套功能完善的新闻发布平台
后台地址：/manager/index.asp
登录用户及密码：admin
认证码： 默认为8888 后台可以修改-Set features perfect live systems, interviews with the system, the news release system in a website integrated management system, which is applied to the external information needs of enterprises and institutions (Executive Edition), media website published information and online interviews (media interviews), securities practitioners and analysts in a certain range of stock market operations, to remind and guide member transactions, exchange interactive learning platform (financial securities version). Which the administrative and media release is an open form of interactive exchanges, and the financial securities version is a member of the interactive exchange, members in the effective time can be integrated, browse, interactive learning exchange.
The system not only has the function of broadcast live interviews, is a perfect news release platform
Background address: /manager/index.asp
Login user and password: admin
Authentication code: default is 8888 background can be modified
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Size: 2390016 |
Author: xxpudn77 |
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Description: 多层系统开发，如何保持客户端与数据库或应用服务器时间同步是一个必须解决的问题 ，我发现许多系统取得是客户端的本地时间，造成多个客户端同时操作却时间不一样。而许多人采用频繁从数据库中取值的形式，增加服务器负载压力。当然有人说，数据保存的时候应该取数据库中时间 ，不错，但是涉及到本地数据之间的校验这类的操作，你该不会频繁地去数据库中得时间吧。鉴于此，本文利用windows系统的一个Api函数进行时间同步(Multilayer system development, how to maintain the client and database or application server time synchronization is a problem that must be solved, I found a lot of system is the local time of the client, resulting in multiple clients at the same time the operation is not the same time. And many people use frequent form of data from the database to increase server load pressure. Of course, some people say that when you save data, you should take the time in the database, good, but it involves the local data between the checksum of such operations, you will not go to the database frequently time?. In view of this, this paper uses a Api function of windows system to synchronize time)
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Size: 12288 |
Author: 陈善福520
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Description: 随着人们生活水平的不断提高，人们对汽车的消费和需求也越来越旺盛。很多汽车销售公司的业务环节仍然运用人工记账的传统方法，既容易出错又会导致账目混乱，查询和统计起来也非常不方便，费时又费力，严重时会给公司造成难以挽回的损失。如何管理好这些，使整个公司协调一致、高效率地运转，是各公司急待解决的问题。 汽车销售管理系统不但能使各业务环节协调一致，而且操作简单，账目清晰。通过账目查询，公司能在最短的时间内获得市场信息，从而制订相应的决策。因此，该系统主要根据实际需求，划分了角色管理、进车管理、销售管理、库存管理、系统管理、报表统计和售后管理六大模块，采用B/S模式实现了从多个环节数据的跟踪管理服务，基本上满足了汽车销售管理流程。
本系统所用到的框架为spring框架，后台编写语言为java语言，前端页面开发为html5，CSS为网页添加特效，javascript和JQuery为前端脚本语言，AJAX作为回调函数进行开发。
系统功能模块主要划分为：客户的基本信息模块，车辆的基本信息模块，厂商基本信息模块，仓库基本信息模块，车辆销售的基本信息模块，订单表的基本信息模块。(according to the actual needs, the system mainly divides the six modules of role management, car entering management, sales management, inventory management, system management, report statistics and after sale management, and realizes the tracking management service from multi link data by B/S mode, and basically satisfies the automobile sales management process.
The framework used in this system is spring framework, background writing language is Java, front-end page is developed as HTML5, CSS adds special effect to web page, JavaScript and JQuery are front-end script language, AJAX is developed as callback function.
The system function module is mainly divided into the basic information module of the customer, the basic information module of the vehicle, the basic information module of the manufacturer, the basic information module of the warehouse, the basic information module of the vehicle sales, and the basic information module of the order form.)
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Size: 3398656 |
Author: 魏三岁 |
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