requestion（6篇英语作文）_数据_线上_传送

本文目录

• 6篇英语作文
• IEEE-488总线的IEEE 488总线信号定义说明
• requestion和request
• He made a request that the problem___at the meeting as soon as possible.请问选什么，为何
• 以sion和tion结尾的单词有哪些
• Java页面中EL的${requestScope.}与<%= request.getParameter%>有什么区别
• java中关闭浏览器后怎么清除session
• 南昌水费网上 可以查询吗
• servlet重定向的时候出现空指针异常

6篇英语作文

能出来不容易，，记着加分呀
1\\As the captain of China，Beijing has been the most popular city of china。So more and more people want to visit Beijing.
I think the best time to visit Beijing is spring ,for the weather of that time is very fine ,neither too hot nor too cold . The warm wind will make you fell happy.Many people visit Beijing for it’s beautiful sence and cultural inheritance .
If you want to have a enjoyable journey ,I suggest you to pay a visit to the Great Wall,the Summer Palace ,the Olympic Park and many other place.When you feel tired after one day’s journey ,you can taste the “Zha Jiang Mian“,a kind of traditional food in Beijing.
There are many other things you can do in Beijing,as shopping in the big shopping mall,visit the different kinds park ,visit the“Si He Yuan“and so on.
I hope you can have a happy time in Beijing.
2\\
Hello, Everyone! Today, I am going to tell all of you about my invention which is the a time machine as it ’s been my dream in my life. Time machine allows people to travel back in time to prevent disaster to happen. It also allows people to tavel into dinstant future to find out solution for Incurable illness including cancer and aids. However, this machine may be abused by people to create chaos in our world or even completely change our history. Therfore, security features are essential for my invention. The future invention of time machine will definately bring more advantages for human being.
That’s all, thank you!
3\\
I like reading,so I love many different kinds of books very much,because they not only broaden my horizons(视野)but also give me inspiration(灵感).
Up to now I have read a lot of books,for example,magazines,novels and storybooks and so on.But one of the books that I like best is “Harry Porter“ . The story is very long but I am interested in it. Harry was such a brave and clever boy that he dared to fight against powerful enemies. His Z-shaped scar and magic stick brought me into a magical world. In fact, the fiction story is so meaningful that I can learn a lot from it. I think it’s the best book I’ve ever read.
4\\
My Favourite Programme
There are thousands and thousands of wonderful programs on TV everyday. Of these, news program has always been my favorite. Almost everyday, I turn on TV at 6:30 p.m. and wait early for the news program. This has almost become apart of my life
News program contains a large amount of latest information from the most serious international political affairs to the most enjoyable football games. The most important feature of the program is its fast rhythm. Because of this fast rhythm, it can contain so much information in such a short time.
I like this program because I think this program is more than just a TV program itself. In fact, it is a way of communication. From this program, people can be well informed about the affairs both at home and abroad in time. The world is developing fast, but if you watch this program everyday, you will feel that you are always in pace with the development of the world.
5\\
dear teacher:
I am just writing to say thank you.thank you for teaching us things we need to learn, thank you for being there for us when we have any problems, thanks for your devotion and willingness to help us, thank you for the love you’ve shown to us.
I am lucky to have a teacher like you. and no matter what kind of person i will become, you will always have your influence on me. You taught me how to study, how to live and even how to be a man. From you I learned what kind of person i want to be and what should i get from life. this means everything to me.
my dear teacher, no matter what you will always have a special place in my heart and i will remember what i have learned from you and carry the knowleges through my life! I will make good use of the school, teachers would also like to be able to impart a better learning methods, such as English will be able to make progress there is a greater interest in education teachers and thanked the ex Thank you!
6\\
Dear students
In some parts of our country, there are many children out of school.So many students are too poor to go to school.They don’t have enought school things and clothes.Every student should have the right to go to school.We shuold help them as possible as we can,such as we can send them some books.I hope that they can have chance to get knowledge as the same as we do
Thanks for your joining!
Students’ Union

IEEE-488总线的IEEE 488总线信号定义说明

IEEE 488总线使用24线组合插头座，其各引脚定义列于表8.7 表8.7 IEEE 488信号定义引脚 符号 说明 引脚 符号 说明 1 D0 低4位数据线 13 D4 高四位数据线 2 D1 14 D5 3 D2 15 D6 4 D3 16 D7 5 EOI 结束或识别线 17 REN 远程控制 6 DAV 数据有效线 18 GND 地 7 NRFD 未准备好接收数据线 19 GND 8 NDAC 数据未接收完毕线 20 GND 9 IFC 接口清零线 21 GND 10 SRQ 服务请求线 22 GND 11 ATN 监视线 23 GND 12 GND 机壳线 24 GND IEEE 488的信号线除7条地线外，有以下3类信号线。
(1) D7～D0数据总线，这是8条双向数据线，除了用于传送数据外，还用于“听”、“讲”方式的设置，以及设备地址和设备控制信息的传送。即在D7~D0上可以传送数据、设备地址和命令。这是因为该总线没有设置地址线和命令线，这些信息要通过数据线上的编码来产生。
(2) 字节传送控制线，在IEEE 488总线上数据传送采用异步握手 (挂钩)联络方式。即用DAV，NRFD和NDAC 3根线进行握手联络。
DAV (Data Avaible)——数据有效线。当由发送器控制的数据总线上的数据有效时，发送器置DAV为低电平 (逻辑1)，指示接收器可以从总线上接收数据。
NRFD (Not Ready for Data)——未准备好接收数据线，只要连接在总线上被指定为接收器中的设备，尚有一个未准备好接收数据，接收器就置NRFD线为有效低电平，示意发送器不要发出数据。当所有接收器都准备好时，NRFD变为高电平。
NDAC (Not Data Accepted)——未接收完数据，当总线上被指定为接收器的设备，有任何一个尚未接收完数据，它就置NDAC线为低电平，示意发送器不要撤销当前数据。只有当所有接收器都接收完数据后，此信号才变为高电平。
(3)接口管理线。
IFC (Interface Clear)——接口清零线。该线的状态由控制器建立，并作用于所有设备。当它为有效低电平时，整个IEEE 488总线停止工作，发送器停止发送，接收器停止接收。使系统处于已知的初始状态。它类似于复位信号RESET。可用计算机的复位键来产生IFC信号。
SRQ (Service Request)——服务请求线。它用来指出某个设备请求控制器的服务，所有设备的请求线是“线或”在一起的，因此任何一个设备都可以使这条线有效，来向控制器请求服务。但请求能否得到控制器的响应，完全由程序安排，当系统中有计算机时，SRQ是发向计算机的中断请求线。
ATN (Attenntion Line)——监视线。它由控制器驱动，用它的不同状态对数据总线上的信息作出解释。　　当ATN=“1”时，表示数据线上传送的是地址或命令，这时只有控制器能发送信息，其它设备都只能接收信息。　　当ATN=“0”时，表示数据总线上传送的是数据。
EOI (End or Identify)——结束或识别线。该线与ATN线一起指示是数据传送结束，还是用来识别一个具体设备。当ATN=“0”时，这是进行数据传送，当传送最后一个字节使EOI=“1”，表示数据传送结束，当ATN=“1”，若EOI=“1”时，则表示数据总线上是设备识别信息，即可得到请求服务的设备编码。
REN (Remote Enable)——远程控制线。该信号为低电平时，系统处于远程控制状态，设备面板开关，按键均不起作用；若该信号为高电平，则远程控制不起作用，本地面板控制开关，按键起作用。

requestion和request

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He made a request that the problem___at the meeting as soon as possible.请问选什么，为何

选c
这边用到一个request，需要/要求（demand/need），从句需要用虚拟语气，用should + 动词原形，同时should可以省略。你可以通过advise/sugguest, advice/sugguestion等词来联想，用法差不多
希望能帮到你，有问题，可以沟通

以sion和tion结尾的单词有哪些

election 选举
construction 建造
cancellation 取消
dictation 听写
creation 创造
admission 准许进入
collision 碰撞
compassion 同情
conclusion 结论
confusion 混乱

Java页面中EL的${requestScope.}与<%= request.getParameter%>有什么区别

requestScope通常是将某个变量或者对象在servlet或者acion中通过request.setAttribute()方法放入到request对象中，然后在页面中使用requestScope来进行数据的显示的
而request.getparameter则是则是更多的用在servlet或者action中，它的作用是接受表单提交来的数据，比如你的jsp页面中的表单提交的数据。
所以两者的区别大概如下：requestScope更多的用于展示页面，从request对象中取出对象或者变量来显示，而request中的对象或者变量也是程序员通过手动的方式request.setAttribute方法来放入request对象中的
而request.getparameter则更多的应用于后台的方法中，它的参数不是程序员手动设置的，而是由表单来接受用户输入的值会随着用户的请求被放入request对象中。

java中关闭浏览器后怎么清除session

当你关闭浏览器，就可以清除session了。
引申：手动清除session的方法：
HttpSession sessoion = request.getSession();
session.removeAttribute(“username“);

南昌水费网上 可以查询吗

可以啊
南昌供水网

servlet重定向的时候出现空指针异常

请回去搞清楚什么是重定向什么是转发！！
解析器不行,用我的
package main.jsp.filter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.        urilist.add(“/UserLoginReg/UserManageServlet“);
        urilist.add(“/UserLoginReg/FindUserServlet“);
        urilist.add(“/UserLoginReg/DoUpdateServlet“);
        urilist.add(“/UserLoginReg/AutherUpServlet“);
        urilist.add(“/UserLoginReg/DoAddServlet“);
        if(urilist.contains(uri)==true){
       
        HttpSession session = req.getSession(true);
    // 从session里取的用户名信息
    UserBean user = (UserBean) session.getAttribute(“userall“);
    // 判断如果没有取到用户信息,就跳转到登陆页面
    if (user == null) {
    // 跳转到登陆页面
    request.setAttribute(“info“, “请先登录“);
    req.getRequestDispatcher(“WEB-INF/jsp/login.jsp“).forward(request,
    response);
    } else {
    // 已经登陆,继续此次请求
    chain.doFilter(request, response);
    }
       
        }else {
// 已经登陆,继续此次请求
chain.doFilter(request, response);
}
}
public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub
}
}