U型和直线型生产线对比报告（推荐5篇）

第一篇：U型和直线型生产线对比报告

U型和直线型生产线对比报告

一、概况

生产线布局是工厂布局的主要内容之一。根据企业的生产纲领，在已确定的生产线空间内，按照生产工艺的要求，在满足各种生产线布局的原则以及生产线空间的限制，确定加工设备和物流设施在生产线中的位置，使生产线获得最佳的运行效率和最低的运行成本。

1）生产线布局的类型：可以分工艺原则布局和产品类型原则布局，基本形状主要有U 型、L型、直线型、E型以及O型。

2）生产线布局方案评价技术：评价指标主要有生产效率、产能、平衡率、时间、布局 成本。

3）生产方式：传统大规模生产和精益生产方式

二、生产布局前的准备工作

1）产能评估 2）空间评估 3）生产条件分析

三、直线型和U型布局比较

1）直线型：设备配置按物流路线直线放置，容易实现自动化传输，工人劳动强度相对 低，但是平衡比较困难

进料

出口

2）U型：物流路线呈U型，进出料由一人控制，按工序排布生产线，作业员多能工化，移动式作业方式

其是首尾相顾，单件流，一旦某一生产环节出现停顿，尾部无成品产出，首部就及时停止新半成品的输入，减少在线库存，加快资金周转率。另外当有些生产环节生产节拍时间慢于整条线的节拍时（如新人等原因），其他工位可以及时给予支援，但这要求各个员工具有多外岗位培训和操作技能。

进料

出口

3）两种生产线优缺点：

1、U型线

适用范围：品种多，批量少，生产工序相对明确，工艺相对单纯之产品（产品大小无关紧要，U型线可以人动产品不动，也可以人不动产品动）

优点：（1）相对可以减少作业场地

（2）生产平衡率高

（3）产品切换时间短，完全可以多到零切换

（4）生产计划安排简单，可以根据标准工时直接将任务安排到个人

缺点：（1）不便于大批量生产

（2）人员技能要求非常高，培养周期长

（3）工具设备投入高（每人都需要一套完整的生产设备及工具）

（4）要有良好的物料支撑及物料配送体系（同样需要很好的物料配送人员）

（5）生产布局规划及工艺节点设计要求高

2、直线型

适用范围：无论小批量多品种还是少品种大批量几乎所有类型产品都能适用

优点：（1）能批量化规模化生产，生产效率高

（2）物流流向单一，工序物料单一，物料配送及管理简单

（3）工序分工明确，人员技能熟练度提升快，并且可以通过轮岗制培养多能工

（4）工具设备投入少，一条线使用一套生产设备及工具

缺点：（1）产品切换时间长

（2）生产线平衡率低

（3）物料配送难道大

（4）生产质量问题会导致批量返工

（5）人员管理难度大，工序分工明确，一个萝卜一个坑

四、总结

U型和直线型两种布局（Layout）有各自的优缺点，不同生产条件适用不同的布局方式。

通常来讲选用哪一种Layout，可从以下几点考虑：

1）首先要了解所需要生产产品及客户需求量（是多品种小批量还是少品种大批 量）

2）计算出这条线的人力配置（员工数量是否有限制），确定人流、物料路线信息（是否有空间上的限制）

3）物料的大小和上料的规则（考虑布局空间是否有限制）4）操作工是否能做到一人多用（多能工）5）空间的利用率

第二篇：直线型(四边形)证明专题训练

1如图6，在正方形ABCD中，G是BC上的任意一点，（G与B、C两点不重合），E、F是AG上的两点（E、F与A、G两点不重合），若AF=BF+EF，∠1=∠2，请判断线段DE与BF有怎样的位置关系，并证明你的结论.在正方形ABCD中，AC为对角线，E为AC上一点，连接EB、ED．（1）求证：△BEC≌△DEC；

F，当∠BED=120°时，求∠EFD的度数．

A

2B

E

F

D

C

图6

2平行四边形ABCD的对角线相交于点O，直线EF经过点O,分别与AB,CD的延长线交于点E,F.求证：四边形AECF是平行四边形.如图，已知：ABCD中，BCD的平分线CE交边AD于

E，ABC的平分线BG

交CE于F，交AD于G．求证：AEDG．

E G

图7

B C 3如图，已知平行四边形ABCD，DE是ADC的角平分线，交BC于点E．（1）求证：CDCE；

（2）若BECE，B80，求DAE的度数．

4.如图，在△ABC中，AB=AC，D为BC中点，四边形ABDE是平行四边形.求证：四边形ADCE是矩形.A

D

B

C

5．如图，分别以Rt△ABC的直角边AC及斜边AB向外作等边△ACD、等边△ABE。已知∠BAC=30º，EF⊥AB，垂足为F，连结DF。（1）试说明AC=EF；

（2）求证：四边形ADFE是平行四边形。

6.如图，在□ABCD中，EF∥BD，分别交BC，CD于点P，Q，交AB，AD的延长线于点E．F．已知BE=BP．求证：(1)∠E=∠F(2)□ABCD是菱形．

AE

6，AC是菱形ABCD的对角线，点E、F分别在边AB、AD上，且AE=AF．求证：△ACE≌△ACF．

图

47已知：如图，在四边形ABCD中，∠ABC＝90°，CD⊥AD，AD2＋CD2＝2AB2．（1）求证：AB＝BC；

（2）当BE⊥AD于E时，试证明：BE＝AE＋CD．

8如图已知E、F分别是□ABCD的边BC、AD上的点，且BE=DF．(1)求证：四边形AECF是平行四边形；(2)若BC＝10，∠BAC＝90°，且四边形AECF是菱形，求BE的长 ．

9如图，在□ABCD中，E、F分别为边ABCD的中点，BD是对角线，过A点作AGDB交CB的延长

线于点G． A

（1）求证：DE∥BF；

D（2）若∠G＝90，求证四边形DEBF是菱形．

10如图，将□ABCD的边DC延长到点E，使CE=DC，连接AE，B 交BC于点F．

⑴求证：△ABF≌△ECF ⑵若∠AFC=2∠D，连接AC、BE．求证：四边形ABEC是矩形．

11如图，E、F分别是矩形ABCD的对角线AC和BD上的点，且AE=DF。求证：BE=CF

12.如图，矩形ABCD的对角线相交于点

O，DE∥AC，CE∥BD．（1）求证：四边形OCED是菱形；

（2）若∠ACB＝30，菱形OCED的面积为83，求AC的长．

A

D

E

13.如图，在△ABC中，∠ACB=90°，BC的垂直平分线DE交BC于D，交AB于E，F在DE上，且AF=CE=AE．⑴说明四边形ACEF是平行四边形；

⑵当∠B满足什么条件时，四边形ACEF是菱形，并说明理由．

第25题图

14.如图，P是矩形ABCD下方一点，将△

PCD绕P点顺时针旋转60°后恰好D点与A点重合，得到△PEA，连接EB，问△ABE是什么特殊三角形？请说明理由.15.如图，在梯形ABCD中，DC‖AB，AD=BC, BD平分ABC,A60.

过点D作DEAB，过点C作CFBD，垂足分别为E、F，连接EF，求证

：△DEF为等边三角形.16.如图，四边形ABCD是等腰梯形，AD∥BC,点E,F在BC上，且BE=CF,连接DE,AF.求证：DE=AF.AD

B

E

F

C

17.如图，梯形ABCD中，AD∥BC，∠DCB＝45°，CD ＝2，BD⊥CD ．过点C作CE⊥AB于E，交对

角线BD于F．点G为BC中点，连结EG、AF．(1)求EG的长；

(2)求证：CF ＝AB ＋AF．

18.如图，在等腰△ABC中,点

D、E分别是两腰AC、BC上的点，连接AE、BD相交于点O，∠1＝∠2．

(1)求证：OD＝OE；(2)求证：四边形ABＥD是等腰梯形；(3)若AB＝3DE, △DCE的面积为

2, 求四边形ABED的面积．

题图

24.如图,在直角梯形ABCD中，AB∥CD,AD⊥DC,AB=BC,且AE⊥BC.⑴ 求证：AD=AE；

⑵ 若AD

=8，DC=4，求AB的长.

第三篇：直线型几何计算与证明（范文模版）

直线型几何计算与证明（相似问题）

1、如图，已知∠ACB＝90°，AC＝BC，BE⊥CE于E，AD⊥CE于D，CE与AB相交于F．

(1)求证：△CEB≌△ADC；(2)若AD＝9cm，DE＝6cm，求BE及EF的长． E2、如图，直角梯形ABCD中，∠ADC=90°，AD∥BC，点E在BC上，点F在AC上，∠DFC=∠AEB．

（1）求证：△ADF∽△CAE；

（2）当AD=8，DC=6，点E、F分别是BC、AC的中点时，求直角梯形ABCD的面积？

C A3、如图，△ABC是等边三角形，CE是外角平分线，点D在AC上，连结BD并延长与CE交于点E．

（1）求证：△ABD∽△CED．

（2）若AB＝6，AD＝2CD，求BE的长．

4、如图,在Rt△ABC中,∠ACB=90°，AD平分∠CAB交于点D,过点C作CE⊥AD于E,CE的延长线交AB于点F,过点E作EG∥BC交AB于G,AE·5.（1）求证:CE=EF；（2）求AC的长.F

F

G

B5、已知,如图,在△ABC中,D是BC的中点,且AD=AC,DE⊥BC交AB于点E,EC与AD相交于点F.（1）求证:△ABC∽△FCD；（2）若S△FCD=5,BC=10,求DE的长.6、如图1，在Rt△ABC中，BAC90°，AD⊥BC于点D，点O是AC边上一点，连接BO交AD于F，OE⊥OB交BC边于点E．

（1）求证：△ABF∽△COE；

OFAC

（2）当O为AC边中点，的值； 2时，如图2，求

OEAB

OFAC

（3）当O为AC边中点，的值． n时，请直接写出

OEAB

B

A

O 图

1C

O 图

2B

F

C

C7、已知：如图，在梯形ABCD中，AD∥BC，∠DCB = 90°，E是AD的中点，点P是BC边上的动点（不与点B重合），EP与BD相交于点O.（1）当P点在BC边上运动时，求证：△BOP∽△DOE；

（2）设（1）中的相似比为k，若AD︰BC = 2︰3.请探究：当k为下列三种情况时，四边形ABPE是什么四边形？①当k= 1时，是；②当k= 2时，是；③当k= 3时，是.并证明．．．k= 2时的结论.8、如图1，在Rt△ABC中，∠ACB=90°，AC=6，BC=8，点D在边AB上运动，DE平分∠CDB交边BC于点E，EM⊥BD垂足为M，EN⊥CD垂足为N．

O P

C D

（1）当AD=CD时，求证：DE∥AC；

（2）探究：AD为何值时，△BME与△CNE相似？

（3）探究：AD为何值时，四边形MEND与△BDE的面积相等？

第四篇：对比选择型作文

对比选择型作文

I.对比选择型作文时四级考试作文的传统题型，这类考试的写作思路是有章可循的，通常给出两种对立的观点让考生权衡利弊，最后得出自己的结论，即：一些人认为…；另一些人认为…；我认为…。

写作提纲如下：

第一段：引出评论的事物，简要提出人们的看法

第二段：提出一种观点或优点，给出支持性分论点

第三段：承上启下地过渡，提出另一种观点或缺点，给出支持性分论点

第四段：平衡两种看法，给出自己的看法。

其中，在三段式作文的情况下，可以将第二段和第三段合并。

对比选择型作文举例：

1.Should the University Campus Be Open to Tourists?

1）名校校园正成为旅游新热点

2）校园是否应该对游客开放，人们看法不同

3）我认为……

2.Lectures or Discussions?

1）有些学生认为讲授式教学方式更适合自己

2）令一些学生则更喜欢讨论式教学方式

3）我的看法

3.The Pros and Cons of College Students’ Taking Part-time Jobs.1）分析大学生做兼职的利与弊

2）谈谈我的看法

4.Spring Festival Gala on CCTV

1)许多人喜欢在除夕观看春节联欢晚会

2)有些人却提出取消春节联欢晚会

3)在我看来……

II.对比选择型作文中常用句型

1.There is a general discussion nowadays on the problem of _____.Some argue/ hold that _____, but others set forth a totally different argument about the issue.如今，_____问题引起了广泛讨论。有些人认为_____，但是其他人则对此持完全相反的观点。

2.In reaction to the phenomenon/ In answer to the problem/ In response to the on-going social change, some people believe _____;in their minds, _____.Others maintain _____;in their eyes, _____.对于这种现象/对于解决该问题/对于该社会变化，一些人认为_____，在他们看来_____。其他人则认为_____，在他们看来_____。

3.Personally, I side with the former/ latter opinion.就我个人而言，我支持前/ 后一种观点。

4.I am of the opinion that priority should be given to _____.我认为我们应该优先考虑_____的观点。

5.When we consider A versus B on the basis of _____, shouldn’t we think that the latter/ former

is a better _____?

在_____的基础上考虑A和B，难道我们不认为后者/前者是一种比较好的_____？

6.With the development of _____, A will prove to hold greater superiority over B.随着_____的发展，A将比B占更大的优越性。

7.It may be briefly summed up as follows.简而言之，总结如下。

8.From what has been mentioned above, we can come to the conclusion that_____.综上所述，我们可以得出结论_____。

9.From my point of view, it is more reasonable to support the first opinion rather than the

second.在我看来，支持第一种观点比支持第二种更合理。

10.I cannot entirely agree with the idea that_____.我无法完全同意这一观点_____。

11.In my opinion, it is more advisable to do _____ than to do_____.在我看来，做_____比做_____更明智。

12.This case has aroused echoes throughout the country, with more and more people following

its lead, but ideas about it vary widely.这个事件在全国产生了反响，也有很多人纷纷效仿，但是人们对它的看法却极不相同。

13.The other side of the coin has voiced strong opposition saying that_____.争论的另一方表示强烈反对，他们声称_____。

14.A public debate has arisen as to the phenomenon of_____.关于_____的现象引发了一场公众讨论。

15.There is a long-running debate as to whether_____.关于是否_____的论战已经持续了很久。

16.There is no doubt that _____ has its drawbacks as well as merits.毫无疑问，_____有优点也有缺点。

17.People’s views on _____ vary from person to person.Some hold that _____.However, others

believe that_____.对_____的观点因人而异。有些人认为_____，然而其他人确认为_____。

18.There are different opinions among people as to_____.关于_____人们的观点大不相同。

III.范文欣赏

范文一

1.许多人喜欢在除夕观看春节联欢晚会

2.有些人却提出取消春节联欢晚会

3.在我看来……

Spring Festival Gala on CCTV

It has been a hot topic for a long time whether the CCTV Spring Festival Gala should be cancelled or not.Many people hold that CCTV Spring Festival Gala offers a wonderful

opportunity to celebrate this traditional festival, for the Chinese all over the world can share the same happiness and excitement brought by the TV program.In addition, many performances are very impressive, and some can even positively affect our life value.However, every coin has two sides.Some people hold that CCTV Spring Festival Gala should be cancelled.One of the most significant reasons may be that this form of celebration force people to spend the eve more passively.What’s more, a great proportion of the programs are not attractive enough.As to me, my favor goes to the former opinion, because CCTV Spring Festival Gala gives us another option to celebrate this important moment.However, it is essential to improve the quality of the programs, and I hope some better forms of celebration will be created in the near future.点评：

本篇文章结构完整，框架合理，主题突出，详略得当。第一段用It has been a hot topic for a long time whether the CCTV Spring Festival Gala should be cancelled or not.引入话题，并根据提纲要求提出支持举办春晚的观点及理由。第二段用However, every coin has two sides.将笔锋一转，提出对立观点和理由。第三段以 As to me, my favor goes to the former opinion,开头，表达自己对春晚的支持，并同时表明对春晚改进的期望。

范文二

1.名校校园正成为旅游新热点

2.校园是否应该对游客开放，人们看法不同

3.我认为……

Should the University Campus Be Open to Tourists?With the development of tourism, many university campuses are open to tourists.Opinions on whether the university campus should be open to tourists vary from individual to individual.Some people hold the idea that university campus should be open to tourists.In their opinion, the opening of campus will stimulate the tourist industry, which contributes to making more money for renewing teaching buildings and libraries.However, others think differently.Opponents hold that the inflowing of tourists may disturb the normal teaching activities.In my viewpoint, I prefer the latter one.For one thing, the interests of university and its students should be taken into account seriously.For another, too many tourists will add a burden to the security department of the university and ruin the quiet environment that students need to study effectively.After all, how shortsighted would it be to develop our university at the cost of order and safety.点评：

纵观全文，论证充分，详略得当。第一段提出话题，即随着旅游业的发展，许多大学校园正成为旅游热点。第二段引出支持方和反对方的对立观点及理由。第三段表明自己的观点，并分两方面进行论证。最后一句话以一个感叹句加虚拟语气总结全文，为画龙点睛之笔，很有说服力。

Assignment: The Pros and Cons of College Students’ Taking Part-time Jobs.1）分析大学生做兼职的利与弊

2）谈谈我的看法

第五篇：对比选择型作文

对比选择型作文模板：

When it comes to ＿＿＿＿ ,different people hold different views.Some contend that＿＿＿＿.For one thing,＿＿＿＿.For another,＿＿＿.In spite of all these claims, others maintain that ＿＿＿＿，They point out that＿＿＿＿.Another instance often cited is that＿＿＿＿.It’s no easy task to find a satisfactory answer to the issue.As for me, there’s some truth to both arguments.It’s advisable to ＿＿＿＿＿＿.现象解释型作文模板：

Recently, ＿＿＿＿What amazes us most is＿＿＿＿＿．It is true that ＿＿＿＿＿.There are many reasons explaining ＿＿＿＿＿＿．The main reason is＿＿＿＿＿，What is more, ＿＿＿＿＿，Thirdly, ＿＿＿＿＿．As a result, ＿＿＿＿＿．

Considering all these, ＿＿＿＿＿．For one thing, ＿＿＿＿For another, ＿＿＿＿．In conclusion, ＿＿＿＿．

问题解决型作文模板：

With the ＿＿＿＿of＿＿＿＿，So it is of great importance for us to＿＿＿＿.On the one hand＿＿＿＿, On the other hand＿＿＿＿,However, we have figured out many ways to ＿＿＿＿＿．Firstly, ＿＿＿＿So long as＿＿＿＿.Secondly＿＿＿＿, Thirdly＿＿＿＿．In fact＿＿＿＿, That is because ＿＿＿＿.In a word,＿＿＿＿＿＿＿＿ ．

图表作文模板：

As can be clearly seen from the graph/table/chart(As is shown in the table/figure), great changed have taken place in_______, The _________ have/has skyrocketed/jumped from _____ to _____.When it comes to the reasons for the changes, different people give different explanations.Here I shall just give a few.To begin with, ______What’s more,___________, Last but not least, ________.While it is desirable that ___________, there are still some problems and difficulties for __________ Firstly, __________ ,In addition, __________ ,In a word, __________.综合运用篇

1.Along with the advance of the society more and more problems are brought to our aattention, one of which is that....随着社会的不断发展，出现了越来越多的问题，其中之一便是____________。

2.As to whether it is a blessing or a curse, however, people take different attitudes.aa

然而，对于此类问题，人们持不同的看法。(Hold different attitudes 持不同的看;Come up with different attitudes 有不同的看法)

4.People are attaching more and more importance to the interview during job hunting

求职的过程中，人们慢慢意识到面试的重要性。

5.As to whether it is worthwhile....., there is a long-running controversial debate.It is quite natural that people from different backgrounds may have divergent attitudes towards it.关于是否值得___________的问题，一直以来争论不休。当然，不同的人对此可能持不同的观点。

6.In the process of modern urban development, we often find ourselves in a dilemma.在都市的发展中，我们往往会陷入困境。

7.Recently the phenomenon has aroused wide concern, some people are in alarm that....最近，这种现象引起了人们的广泛关注，有人开始担心______________。

8.The human race has entered a completely new stage in its history, with the increasingly rapid economic globalization and urbanization, more problems are brought to our attention.人类进入了一个历史的崭新的阶段，经济全球化、都市化的速度不断加快，随之给我们带来了很多问题。

9......plays such an important role that it undeniably becomes the biggest concern of the present world, there comes a question, is it a blessing or a curse?“

_______显得非常重要而成为当今世界所关注的最大的问题，这是无可厚非的。不过，问题是：”我们该如何抉择?“

10.Now we are entering a new era, full of opportunities and challenges,现在我们正在进入一个充满机会和挑战的新时代。

展现问题篇

问题的常用词：question, problem, issue

1.Recently, the issue of......has been brought into public focus.近来，_______的问题引起了社会的广泛关注。

2.Now we are entering a brand new era full of opportunities and innovations, and great changes have taken place in people's attitude towards some traditional practice.现在我们进入了一个充满机遇和创新的崭新时代，很多人对某些传统的看法也发生了很大改变。

5.At present, some people think....while others claim...Both sides have their merits.目前，一些人认为_______而另一些人则认为_______。其实，两种观点都其可取之处。

6.People rarely reach an absolute consensus on such a controversial issue.对于这种极具争议的话题，我们很难作出绝对的回答。

12.There is a good side and a bad side to everything, it goes without saying that...万事万物都有其两面性，所以，勿庸置疑，____________。

22.People, who advocate that..., have their sound reasons(grounds)

坚持认为______的人也有其说法(依据)。

观点的用词：Attitude, opinion, 与其搭配的动词以及词组：Take, have, come up with，set forth, put forward等。

28.But on the other hand, there are also quite a few people who strongly advocate that..,.30.However, there are a large number of people who hold a different view concerning this case.然而，很多人对此有不同的看法。

问题用词：Issue, phenomenon，后接介词, on, over等。

38.Personally, I side with the latter(former)opinion...就我个人而言，我支持后者(前者)___________。39.Personally, I am in favor of the former point of view.就我个人而言，我较同意前一种看法。40.To my point of view 我认为47.When considering opinions of both sides, I am inclined to...对两种观点进行综合考虑之后，我较认同_________________。48.If it is up to me to make a choice between...and...I would rather choose...over...如果要我在____和____之间进行选择，我宁愿选择_____而不会选择______。表达不确定的用词：May, seem, be likely to, possible, probably, perhaps, be said that, be said to...51.in my mind , the following factors/reasons/causes need to be taken into consideration

我认为，我们需要考虑下列因素/原因：

52.There are several reasons for this phenomenon/why...-(as follows).造成这种现象的原因如下：

53.And I would like to present two explanations for this:

对于此，我有如下两点愚见：

55.There are numerous reasons why ____, and I would like to explore a few of the most important ones here.为什么___________，原因很多，在此列举几个较为重要的原因。

81.As the proverb goes: ”every coin has its two sides“,....is no exception.俗语有云：”万事万物都有两面性。“ ________也不例外。

88.....undoubtedly plays an increasing significant role in modern life.不容置疑，_______在现代生活中不断显示出起重要性。

89.With the development of the society,...is increasingly important.90.The merits of this is obvious...其好处显而易见。

91.As we know,...bring many benefits and convenience to people.众所周知，_______ 为我们的生活带来很多好处。

92.There are no less than three advantages in..as rendered below.97.Some people deem it is a dangerous signal and call for public awareness of the negative effects it has brought about.有些人认为这是一种危险的信号，因此需关注其给社会带来的负面影响。

98.Of course, nothing in the world is perfect, so is...104.From what has been discussed above, we may finally draw the conclusion that...通过以上的讨论，我们可以得出如下结论，___________。

108.From what has been discussed above, we can see...does more harm than good to us.Therefore, I strongly approve of the motion that...从以上论述可知，_____ 对我们百害而无一利。

”比如"的表达方式：

For example,For instance,It can be given a concrete example,Take...for an example, it is a very obvious case

There is one impressive example I want to mention here.Let's see an example.It is best illustrated if given the following example.Let me provide an example.Perhaps the most important example of...is that...As I remember,/ I now still remember that.I will never forget that

To illustrate this, there is an example that is very persuasive.An instance that accompanies this reason is that...An example can give the details of this argument,...It is a forceful example to demonstrate the importance of...History presented many examples of...In order to see this point clearly, let us see an example.