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1-2月黑龙江煤炭产销量下降? 本文由 盖德化工论坛转载自互联网 1~2月,黑龙江省 煤炭 产量920万吨,同比下降14.5%;销量818万吨,下降18.6%;铁路运量497万吨,下降17.4%。 2月末,全省煤炭库存510万吨,同比增加92万吨。查看更多 0个回答 . 2人已关注
谁会活性二氧化锰的制备? 我要制备 活性二氧化锰 ,用来氧化苯甲醇成 苯甲醛 。之前制备过一次,方法是:高锰酸钾+硫酸锰,加硝酸,静止24小时,过滤,水洗,110度烘干10小时。第一次效果还可以,有50%的收率,但是过了几天再氧化,效果就差了,是不是 二氧化锰 制备之后活性慢慢降低?二氧化锰的活性可以通过高温烘干活化吗?再次烘干会不会显著增加活性?像我这个反应,还加点什么催化剂之类的会使其氧化效果增加?查看更多 1个回答 . 1人已关注
谁开过开封10000的外压缩流程?膨胀量多少? 我门公司拆迁了一套旧的开封10000外压缩项目,除了流程图什么都没有,谁知道这种流程的膨胀量设计是多少 这套空分估计有05-07年左右的空分查看更多 2个回答 . 1人已关注
复合肥染色问题? 谁能够讨论一下对复合肥颗粒染色的问题查看更多 9个回答 . 5人已关注
请教,LPG汽化器间,到周边设施的距离有没有规范要求? 查看更多 1个回答 . 3人已关注
关于老标准中人孔垫片的问题? 求助各位,一台设备,图纸中给的人孔标准是JB/T4719-92,但这个标准已经作废,在网络上也没有搜寻到。现要定做这个人孔的垫片(现场设备在线,无法测绘),我该怎样才能找到这个人孔的垫片尺寸?大家帮帮忙,谢谢! 查看更多 2个回答 . 2人已关注
压力容器使用登记证在哪里办理?谁有样板发一个过来。? 压力容器 使用登记证在哪里办理?谁有样板发一个过来。查看更多 2个回答 . 4人已关注
液化石油气的密度怎么算? 请教各位大侠: 液化石油气 的液相密度该怎么取啊?有没有随环境温度变化的参照表啊? 各位学长帮帮忙,小弟先谢谢了!!!查看更多 3个回答 . 3人已关注
单塔污水汽提装置侧线抽氨氨气精制方案? 我们上的单塔污水汽提装置加工能力为50t/h,侧线抽氨, 氨气 中硫化氢的含量在40-60ppm,请问可以有哪些办法可以把硫化氢降至10ppm以下,甚至更低,制得的 氨水 可以作为 锅炉脱硫 、脱硝的氨水使用。还请各位化工专家们多多指点 查看更多 1个回答 . 2人已关注
SCR反应中测试催化剂的抗水热稳定性过程中5%的水蒸气怎么通入? 气流量为200ml/min,5%的水蒸气水温应该设置多少?怎么计算?查看更多 1个回答 . 3人已关注
开启压力? 安全阀 DN25 PN1.6的开启压力是0.6MPa 开启压力是不是set pressure? 查看更多 2个回答 . 3人已关注
哪位朋友有CO2气提法液氨喷射泵结构图? 对于CO2气提法 尿素 生产中, 液氨 喷射泵 是一个比较重要的设备,虽然内部结构比较简单,但是 本人手头上没有了这个设备的机构图(几年前看到过,现在不是很清楚了),哪位还有有这个结构 图,请贴一个,万分感谢!!!!查看更多 3个回答 . 4人已关注
拱顶罐改造? 重质油拱顶罐改为 内浮顶罐 要注意哪些事项?需要安装哪些设备? 查看更多 5个回答 . 1人已关注
书名=小氮肥安全技术? 小氮肥安全技术 格式: JPG转PDG{采用UnicornViewer阅读、也可转PDF。网上有相关介绍。不懂的baidu搜索) 宽度: 982 高度: 1454 Dpi: 150 [General Information] 书名=小氮肥安全技术 页数=523 [ ]查看更多 2个回答 . 3人已关注
一个固定工艺流程中,如何计算主物料经过某换热器后的压 ...? 如题,是不是要根据 换热器 内物料管线的阻力,李彤伯努力方程来算?那这样也太麻烦了,因为有很多影响阻力的因素如管线弯头,隔流板等。另外,这个换热器的原始安装数据里有没有告诉它的阻力或压降?求大神指点查看更多 0个回答 . 3人已关注
FMTP技术开发新闻发布会? 流化床 的放大确实比较困难。 这个 丙烯 的成本能竞争过中东那边进口来的丙烯吗? 现在 丙烷 脱氢制丙烯的技术也成熟了查看更多 21个回答 . 2人已关注
大家晒晒职称英语成绩? 各地的职称英语成绩陆续发布了,大家晒晒自己的成绩!查看更多 8个回答 . 1人已关注
职称英语理工AB级阅读判断例题精讲(1)? 职称英语理工AB级阅读判断例题精讲(1)(   Computer mouse   The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screen, but the mouse still our workhorse.   The computer mouse was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became popular and arrow keys were used to more around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine computer tasks.   How does the mouse work? We have to start at the bottom, so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts. The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects a changing pattern of light, converts the pattern into an electronic signal, and sends the signal to the computer through wires in a cable that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.   So far we have only discussed the basic computer mouse that most of you probably have or have used. One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up the dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.   1. Most computer users want to know how the computer mouse works.   A. right B. wrong C. not mentioned   2. According to the author, general computer users need not know how the computer mouse was invented.   A. right B. wrong C. not mentioned   3. The computer mouse derives its name from the cable that goes out its body, which looks like the tail of a mouse.   A. right B. wrong C. not mentioned   4. The key components of a computer mouse are the two LEDs.   A. right B. wrong C. not mentioned   5. When an ordinary computer mouse gets dirty, it has to be replaced with a new one.   A. right B. wrong C. not mentioned   6. The most durable computer mice on sale are the IBM ones.   A. right B. wrong C. not mentioned   7. The optical mouse is superior to the basic one in that the former has no moving parts.   A. right B. wrong C. not mentioned 答案与解析:   1.分析文章标题: Computer mouse (鼠标)   2.直接解题:   1. Most computer users(使用者) want to (想要...)know how the computer mouse (电脑鼠标)works(工作) .   A. right B. wrong C. not mentioned   1. B. 细节题。 利用问题句中涉及到修饰词的结构most computer users作为答案线索, 在文章中查找答案相关句:   (第一段) The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use(使用) the computer mouse (与问题句中的most computer user呼应)daily(每天, 每天的, 日报) without(不,没有) stopping to(停下来去...) think how it works(工作, 起作用) until(直到) it gets(变得) dirty (脏的,卑鄙的)and we have to(不得不) learn (学习)how to clean(使...干净, 打扫) it. We learn to point at thing before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screen, but the mouse still our workhorse.   文章第一段第三句说, 大多数电脑使用者天天用电脑却没有想去了解鼠标的工作原理。由此可见问题句的内容与该句内容不一致,因此问题句没有提供正确信息。   考点:stop to do sth./停下来去...   比较:stop doing /停止...   提示:   问题句表示数量或范围的修饰词, 如:all, any, whole, most, some 等可能是判断答案的关键词。   2. According to (根据/依据)the author(作者), general(普通的, 综合的, 全面的) computer users(使用者) need(需要) not know (知道)how(怎样) the computer mouse was invented(被发明).   A. right B. wrong C. not mentioned   2.C. 细节题。利用问题句中涉及到修饰词的结构general computer users作为答案线索, 在文章中查找答案相关句:   (第一段)The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel.(第一题答案相关句)Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We (指代鼠标用户/与general computer users呼应)learn to point at (指向)things(东西) before(在...之前) we learn to (学会)speak(说话), so the mouse(鼠标) is a very natural(自然的) pointing(指方向的) device(设备). Other computer pointing devices include(包括) light pens(光笔), graphics tablets and touch screen, but(但是) the mouse still our workhorse(重负荷工作部件).   The computer mouse was invented (被发明)in 1964 by Douglas Englehart of Stanford University(斯坦福大学). As(随着) computer screens became popular(受欢迎的) and arrow keys were used to (被用于...)move(移动) around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine computer tasks.   (第3段)How does the mouse work(工作)? We have to start at the bottom, so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts. The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects a changing pattern of light, converts the pattern into an electronic signal, and sends the signal to the computer through wires in a cable that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.   So far we have only discussed the basic computer mouse that most of you probably have or have used. One problem with this design is that the mouse gets dirty as the ball rolls over the surface and picks up the dirt. Eventually you have to clean your mouse. The newer optical mice avoid this problem by having no moving parts.   文章中没有出现与问题句的内容相呼应的信息, 因此判断问题句的内容在文章中没有被提到。   3. The computer mouse derives its name(名字, 名称) from(从...中获得...) the cable(电缆) that goes out its body(身体), which looks like (看起来象)the tail(尾巴) of a mouse(老鼠).   A. right B. wrong C. not mentioned   3.A. 细节题。利用问题句中的细节信息词cable和the tail of a mouse 作为答案线索, 在文章中查找答案相关句:   The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screen, but the mouse still our workhorse.   The computer mouse was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became popular and arrow keys were used to more around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine computer tasks.   (第3段)How does the mouse work? We have to start at the bottom, so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts. The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED(发光 二极管 ) detects(察觉, 探测) a changing(变换的) pattern(模式, 图案) of light(光), converts the pattern into(把...转变成) an electronic(电子的) signal(信号), and sends(发送, 寄,派遣) the signal to the computer(计算机) through(通过) wires(电线) in a cable (电缆)that goes out the mouse body. This cable is the tail (尾巴) that helps(帮助) give(给予) the mouse its name(名字). The computer interprets the signal to tell it where to position the cursor on the computer screen.   文章第2段倒数第2句, 第3句信息与问题句信息一致, 因此问题句提供了正确信息。   考点:代词结构指代内容 + 定语从句  4. The key(关键,钥匙, 键) components(成分,部件) of a computer mouse are the two LEDs(二极管).   A. right B. wrong C. not mentioned   4.A. 利用问题句中的饱含数字的特征结构two LEDs 作为答案线索, 在文章中查找答案相关句:   The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screen, but the mouse still our workhorse.   The computer mouse was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became popular and arrow keys were used to more around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine computer tasks.   How does the mouse work(工作)? We have to start at the bottom, so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts. The shafts are connected to wheels with several small holes in them. The wheels(轮子, 滚轮) have a pair of (一对,一双 )small electronic(电子) light-emitting(发光的) devices(设备) called light emitting diodes (LED) mounted on either side(被安装在两侧的).(第7句) One LED (发光二极管)sends a light beam(光束) to the LED on the other side(在对面). As the wheels(轮子/滚轮) spin(旋转) and a hole(孔,洞) rotates by, the light beam(光束) gets through to (与...电话联系, 达到)the LED on the other side(在对面). But a moment(瞬间) later(后来) the light beam is blocked (被阻塞)until the next(下一个的, 下一次) hole is in place(在适当的位置). The LED(发光二极管) detects(察觉, 探测) a changing(变换的) pattern(模式, 图案) of light(光), converts the pattern into(把...转变成) an electronic(电子的) signal(信号), and sends(发送, 寄,派遣) the signal to the computer(计算机) through(通过) wires(电线) in a cable (电缆)that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.   以上答案相关句涉及到两个发光二极管在鼠标中的具体工作方式:二极管把光信号转换成电信号,传送到电脑。 由此可看出二极管是鼠标中的关键部件。   考点:概括总结   5. When an ordinary(普通的) computer mouse(鼠标) gets dirty(脏的), it has to be replaced (不得不被替换)with a new one.   A. right B. wrong C. not mentioned   5.B. 细节题。利用问题句中的含有修饰词的细节信息结构new one(new mouse)及另一个修饰词dirty 共同作为答案线索作为答案线索,在文章中查找答案相关句:   The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screen, but the mouse still our workhorse.   The computer mouse was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became popular and arrow keys were used to more around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine computer tasks.   How does the mouse work? We have to start at the bottom, so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts. The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects a changing pattern of light, converts the pattern into an electronic signal, and sends the signal to the computer through wires in a cable that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.   So far we have only discussed the basic computer mouse that most of you probably have or have used. One problem with this design(设计) is that the mouse gets dirty as the ball rolls over(在...上面滚过) the surface (表面)and picks up(捡起, 获得, 加快) the dirt(灰尘). Eventually(最终) you have to clean(把...弄干净) your mouse. The newer optical mice avoid this problem by having no moving parts.   从答案相关句中可以看出鼠标脏了可以察干净再用, 因此问题句提供了错误的信息。   考点:上下文之间的意义关系― 条件与结果。 6. The most durable(持久的, 耐用的) computer mice(鼠标) on sale (在销售的)are the IBM ones.   A. right B. wrong C. not mentioned   6.C. 细节题。利用问题句中的含有修饰词的特征词IBM及涉及到形容词最高级结构的细节信息结构The most durable computer mice共同作为答案线索作为答案线索, 在文章中查找答案相关句, 结果发现这个两个结构在文章中均没有呼应的内容,因此判断该问题句的内容在文章中没有被提到。   提示:   如果问题句中出现了以比较级形式或最高级形式出现的形容词或副词结构, 则往往可以利用这样的结构作为答案线索在文章中查找与问题句相关的内容。   7. The optical(光学的) mouse(鼠标) is superior to (优于...)the basic(基本的, 普通的) one in that (因为)the former (前者)has no moving parts(运动部件).   A. right B. wrong C. not mentioned   7.A. 细节题。利用问题句中细节信息词optical mouse, basic one (basic mouse), moving parts共同作为答案线索作为答案线索,在文章中查找答案相关句:   The basic computer mouse is an amazingly clever invention with a relatively simple design that allows us to point at things on the computer and it is very productive. Think of all the things you can do with a mouse like selecting text for copying and pasting, drawing, and even scrolling on the page with the newer mice with the wheel. Most of us use the computer mouse daily without stopping to think how it works until it gets dirty and we have to learn how to clean it. We learn to point at thing before we learn to speak, so the mouse is a very natural pointing device. Other computer pointing devices include light pens, graphics tablets and touch screen, but the mouse still our workhorse.   The computer mouse was invented in 1964 by Douglas Englehart of Stanford University. As computer screens became popular and arrow keys were used to more around a body of text, it became clear that a pointing device that allowed easier motion through the text and even selection of text would be very useful. The introduction of the mouse, with the Apple Lisa computer in 1983, really started the computer public on the road to relying on the mouse for routine computer tasks.   How does the mouse work? We have to start at the bottom, so think upside down for now. It all starts with mouse ball. As the mouse ball in the bottom of the mouse rolls over the mouse pad, it presses against and turns two shafts. The shafts are connected to wheels with several small holes in them. The wheels have a pair of small electronic light-emitting devices called light emitting diodes (LED) mounted on either side. One LED sends a light beam to the LED on the other side. As the wheels spin and a hole rotates by, the light beam gets through to the LED on the other side. But a moment later the light beam is blocked until the next hole is in place. The LED detects a changing pattern of light, converts the pattern into an electronic signal, and sends the signal to the computer through wires in a cable that goes out the mouse body. This cable is the tail that helps give the mouse its name. The computer interprets the signal to tell it where to position the cursor on the computer screen.   So far (到目前为止) we have only discussed(讨论) the basic(普通的) computer mouse that most of you probably(可能) have or have used. One problem with (关于...的问题)this design is that the mouse gets dirty as the ball rolls over the surface and picks up the dirt. Eventually you have to clean your mouse. The newer optical mice avoid(避免) this problem by having no moving parts(运动部件).   文章结尾部分说光学鼠标因为没有运动部件, 所以不会像普通鼠标那样吸附灰尘, 由此可推断出光学鼠标优于普通鼠标。   考查:代词结构指代内容 + 推断查看更多 2个回答 . 3人已关注
膨化机的工作原理是什么? 各位盖德,麻烦一下: 我遇到的是生物工程的项目,里边有一单元设备——膨化机,用于酵母菌体(干燥了的) 的————“ 膨化机进行膨化破壁”,有哪位朋友接触过该设备?能否简略介绍其工 作原理? 拜托各位了~~~~~ 查看更多 3个回答 . 2人已关注
讨论一个密封管道的压力问题? 一个密封管道里充满了液体,然后给液体加压,然后把管道两端用阀门都关死。 管道里面的液体还有压力么? 实际操作中,这段管线还是带压的。我不理解的是,液体不是不能压缩的么。为什么还带压呢?查看更多 9个回答 . 2人已关注
简介
职业:青岛鲁海光电科技有限公司 - 化工研发
学校:山东铝业职业学院 - 冶金化工系
地区:海南省
个人简介:谬误越大,真理取得的胜利就越大。查看更多
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