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提问人:网友davyzone 发布时间:2022-01-07
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Pull systems are intuitively attractive since they lead to

A、A decrease in lead times achieved through the ability to better anticipate incoming orders from the retailers.

B、A decrease in inventory at the retailers since inventory levels at these facilities increase with lead times.

C、A decrease in variability in the system and, in particular, variability faced by manufacturers due to lead-time reduction.

D、Decreased inventory at the manufacturer due to the reduction in variability.

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更多“Pull systems are intuitively attractive since they lead to”相关的问题
第1题
A.like B.in C.around D.to E.towardWhen it comes _____1 gravity,the larger an object is,t

A.like B.in C.around D.to E.toward

When it comes _____1 gravity,the larger an object is,the stronger its force is.A person creates gravity but not enough to pull objects ____2 him or cause things to go into orbit ___3 him.On the other hand,a planet has enough gravity to pull objects into orbit around it.A star makes enough gravity that it can pull whole solar systems into its orbit,____4 ours.Our sun's gravity is so strong that it keeps an object-Pluto-that is roughly 3.7 billion miles away____5 orbit.

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第2题
What happened when PC Computer Systems closed down?A.Many people lost their jobs.B.The Int

What happened when PC Computer Systems closed down?

A.Many people lost their jobs.

B.The Intrax Company took its place.

C.They broke a contract with city leaders.

D.Other technology businesses left the area.

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第3题
Typically, these are concern with the establishment of(66)the network and with the control

Typically, these are concern with the establishment of(66)the network and with the control of the flow of messages across this channel. The provision of such facilities is only part of the network requirements, however, since in many applications the communicating computers may be of different types. This means that they may use different programming languages and, more importantly, different forms of(67)interface between user(application)program, normally referred to, as application processes or APs, and the underlying communication services may be(68)For example, one computer may be a small single -user computer, while another may be a large(69)system. In the earlier days of computer communication, these issues meantthat only closed communities of computers(that is, from the same manufacturer)could communicate with each other in a meaningful way. IBM’s Systems Network.

Architecture (SNA) and DEC's Digital Network Architecture (DNA) are just two examples of Communication software packages produced by manufacturers to allow their systems to be int erconnected together. These proprietary packages, however, of which there am still many inexistence, do not address the problem of universal interconnect ability, or open systems interconnection. In an attempt to alleviate this problem,(70), in the late 1970s, formulated a reference model to provide a common basis (or the coordination of standards developments and to allow existing and evolving standards activities to beplaced into perspective with one another.

A.communication channel access

B.protocols

C.data channel

D.public communication

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第4题
Black HolesWhat is a black hole? Well, it's difficult to answer this question, since the t

Black Holes

What is a black hole? Well, it's difficult to answer this question, since the terms we normally use to describe a scientific phenomenon are inadequate here, Astronomers and scientists think that a black hole is a region of space (not a thing) into which matter has fallen and from which nothing can escape—not even light. So we can't see a black hole. A black hole exerts (施加) a strong gravitational (重力的) pull and yet it has no matter. It is only space—or so we think. How can this happen?

The theory is that some stars explode when their density increases to a particular point; they "collapse" and sometimes a supernova (超新星) occurs. The collapse of a star may produce a "White Dwarf (白矮星) "or a "neutron star"—a star whose matter is so dense that it continually shrinks by the force of its own gravity. But if the star is very large this process of shrinking may be so intense that a black hole results. Imagine the earth reduced to the size of a marble, but still having the same mass and a stronger gravitational pull, and you have some idea of the force of a black hole. Any matter near the black hole Is sucked in. It is impossible to say what happens Inside a black hole.

Our space and time laws don't seem to apply to objects in the area of a black hole. Einstein's relativity theory is the only one that can explain such phenomena. Einstein claimed that matter and energy are interchangeable, so that there is no "absolute" time and space, There are no constants at all, and measurements of time and space depend on the position of the observer— they are relative. Einstein's theory provided a basis for the idea of black holes before astronomers started to find some evidence for their existence. It is only recently that astronomers have begun specific research into black holes.

The most convincing evidence of black holes comes from research into binary (由两部分组成的) star systems. In some binary star systems, astronomers have shown that there is an invisible companion star, a "partner" to the one which we can see in the sky. There is one star, called by its catalogue number HDE 226868, which must have a Partner. This partner star, it seems, has a mass ten or twenty times greater than the sun—yet we can't see it. Matter from HDE 226868 is being dragged towards this companion star. Could this invisible star, which exerts such a great force, be a black hole? Astronomers have evidence of a few other stars too, which might have black holes as companions.

Which of the following does NOT fit the definition of the black hole?

A.The black hole is a region of space.

B.The black hole sucks in any object that passes by it.

C.The black hole is visible through an infrared telescope.

D.The black hole has no matter.

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第5题
Section B – TWO questions ONLY to be attemptedForion Electronics (Forion) manufactures a r

Section B – TWO questions ONLY to be attempted

Forion Electronics (Forion) manufactures a range of electronic goods. Its business has grown rapidly over the last ten years and is now complex and international. Forion manufactures over 100 different products, selling into 25 different countries. There is a supplier base of over 200 companies from which Forion sources. As the business has become more complex, the board has found it difficult to pull together all the information that they require in order to make decisions.

The current information systems are developed in-house and are based in the functional departments (such as purchasing, manufacturing, warehousing and delivery, selling and marketing). The organisation uses the financial system as a means of bringing together information for an overview of corporate performance.

There have been a number of examples of problems encountered with information in Forion:

– there are inefficiencies arising from ordering the wrong amount of subcomponents;

– there are often stock-outs or obsolescence of unsold goods in the warehouses, although the marketing department prepares good sales forecasts; and

– sometimes, there are insufficient delivery vehicles available to meet customer deadlines.

The board of Forion believes the problems arise from poor information sharing within the company. They are considering the purchase of an enterprise resource planning system (ERPS) to be the single information system for the whole organisation.

Also, Forion is planning to launch a smartphone. However, in order to make it competitive they need to have high-visibility, durable screens. As the cost of screen development is considerable, it has been decided to form. a strategic alliance with a well-known screen manufacturer to provide this key component for the new smartphone. Bon Accord Screens (BAS) has been chosen as the strategic ally, as they have a strong reputation for their quality of manufacturing and new product development. BAS has been trying to break into the smartphone market for several years.

The alliance agreement has stipulated three critical areas of performance for BAS’ supply to Forion:

1. quality of manufacturing, measured by fault rates of screens supplied being within agreed tolerances (so that they fit Forion’s phone-bodies);

2. time of delivery, measured by the number of times a shipment is more than one day overdue; and

3. the ability to provide technical upgrades to the screens as the market demands.

The service level agreement (SLA) will be based on these three points and there will be financial penalties built into the agreement if BAS fails to meet these.

Required:

(a) Discuss the integration of information systems in an ERPS and how the ERPS may impact on performance management issues at Forion. (10 marks)

(b) Evaluate, from Forion’s viewpoint, the usefulness of the three critical areas in the alliance agreement for measuring the performance of BAS. (8 marks)

(c) Evaluate the relative reliability of financial and non-financial data from internal and external sources in the context of the alliance between Forion and BAS. (7 marks)

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第6题
根据下列文章,请回答 31~35 题。 Black Holes What is a black hole? Well, it's difficult

根据下列文章,请回答 31~35 题。

Black Holes

What is a black hole? Well, it's difficult to answer this question, since the terms we normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region of space (not a thing) into which matter has fallen and from which nothing can escape -- not even light. So we can't see a black hole. A black hole exerts (施加) a strong gravitational (重力的) pull and yet it has no matter. It is only space -- or so we think. How can this happen?

The theory is that some stars explode ,when their density increases to a particular point; they "collapse" and sometimes a supernova (超新星) occurs. The collapse of a star may produce a "White Dwarf (白矮星) " or a "neutron star"-- a star whose matter is so dense that it continually shrinks by the force of its own gravity. But if the star is very large this process of shrinking may be so intense that a black hole results. Imagine the earth reduced to the size of a marble, but still having the same mass and a stronger gravitational pull, and you have some idea of the force of a black hole. Any matter near the black hole is sucked in. It is impossible to say what happens inside a black hole.

Our space and time laws don't seem to apply to objects in the area of a black hole. Einstein's relativity theory is the only one that can explain such phenomena. Einstein claimed that matter and energy are interchangeable, so that there is no "absolute" time and space. There are no constants at all, and measurements of time and space depend on the position of the observer -- they are relative. Einstein's theory provided a basis for the idea of black holes before astronomers started to find some evidence for their existence. It is only recently that astronomers have begun specific research into black holes.

The most convincing evidence of black holes comes from research into binary (由两部分组成的) star systems. In some binary star systems, astronomers have shown that there is an invisible companion star, a "partner" to the one which we can see in the sky. There is one star, called by its catalogue number HDE 226868, which must have a partner. This partner star, it seems, has a mass ten or twenty times greater than the sun-- yet we can't see it. Matter from HDE 226868 is being dragged towards this companion star. Could this invisible star, which exerts such a great force, be a black hole? Astronomers have evidence of a few other stars too, which might have black holes as companions.

第 31 题 Which of the following does NOT fit the definition of the black hole?

A.The black hole is a region of space.

B.The black hole sucks in any object that passes by it.

C.The black hole is visible through an infrared telescope.

D.The black hole has no matter.

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第7题
If adults liked to read books that were exceedingly difficult, they' d all be reading Prou
st. Most don' t.

So why, reading experts ask, do schools expect children to read — and love to read — when they are given material that is frequently too hard for them?

Science and social studies textbooks arc at least a grade above the reading levels of many students, experts say, and in some suburban and urban school systems, reading lists can include books hard for some adults to tackle.

Toni Morrison's award-winning novel "Beloved," about a former slave' s decision to kill her child rather than see her enslaved, is on some middle schools' lists for kids to read unassisted. And elementary schools sometimes ask students to read books such as "The Bridge to Terabithia," with themes about death and gender roles that librarians say are better suited for older children.

To be sure, pushing some students to challenge themselves is important, educators say. But there are points where kids read books before they can truly comprehend them and then lose the beauty of the work.

"Teachers studied ' The Great Gatsby' in college and then want to teach that book because they have smart things to say about it, and they teach it in high school," Catkins said. "Then schools want to get their middle school kids ready for high school so they teach them ' The Catcher in the Rye.' It' s a whole cultural thing."

In large part, he Richard Allington, a leading researcher on reading instruction and a professor of reading education at the University of Tennessee, blames inappropriately chosen books for students' reading woes, especially in school systems where large percentages of children read below grade level. The average fifth-grade student in Detroit and Baltimore, for example, reads at a third-grade level, he said, but schools still give them fifth-grade core reading and social studies texts.

That, he said, crushes a child' s motivation.

"If you made me education magician and I had one thing that l could pull off, it would be that every kid in this country had a desk full of books that they could actually read accurately, fluently, with comprehension," he said.

Soft Sinozich, a seventh-grader in the Humanities and Communications Magnet Program at Eastern Middle School in Montgomery County, said she would like to be assigned books that speak to her.

In sixth-grade English, "graphic novels [were] excluded, which annoyed many of us," said Sofi, who is partial to Japanese comics called manga because she finds the style. beautiful and the stories well done.

Many teachers exclude graphic novels and comics from reading lists, even though a graphic novel was nominated for the National Book Award this year. And Archbishop Desmond Tutu, a Nobel Peace Prize winner, has said he learned to read through comics after his schoolmaster father disregarded others who said they would lead to no good.

So should kids read Shakespeare or the comics? Graphic novels or "To Kill a Mockingbird"? Reading experts say they should read everything — when they are ready to understand what they are reading.

The novel "Beloved" of Toni Morrison is cited as an example to show that this book is —. for children to read.

A.easy

B.difficult

C.suitable

D.bad

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第8题
In promising to fuse media as diverse as television, telephone communication, video games,
music and data transmission, the era of digital convergence goes better than yesterday's celebrated "information superhighway". Yet achieving this single technology is far from straightforward. There are currently three major television broadcast standards, and they are all incompatible with each another. But this is nothing compared to the many technologies supporting the Internet, each with a different bandwidth and physical media. The problems faced in designing platforms and communication systems that will be accepted across the world can appear insuperable. Even once global standards are assured, however, a further obstacle lies in wait. The Internet is plagued by long, erratic response times because it is a pull technology, driven by patterns of user demands. Push technology, on the other hand, reverses the relation-ship: servers simply send information to passive users, as in television and radio. But if some form. of combination between one-way television flow and interactive Internet is to be the basis of our future media, it is hard to see how it could be operated. Moreover, the problem of fusing Internet with television is also one of defining the services offered. Information, entertainment and relaxation appear at first to be quite different needs. Serious doubts remain over whether consumers will be interested in having to make the sort of mental effort associated with computing while also settling down in front of a sitcom. Besides the issue of consumer habits, infrastructure costs are set to be immense, and will have to be met by national states or the private sectors before being passed on to users. Platforms do not necessarily have to be expensive. The mobile phone is a good example of how something that is technologically sophisticated can almost be given away, with its cost recovered through service charges. Users are then coerced through clever marketing to upgrade to newer phones with more features to reinforce their dependence. Whatever the outcome, it is obvious that technology will play an increasing part in our everyday lives. Beyond technology, digital convergence embraces the services, industrial practices and social behavior. that form. modern society. We have in our hands the technology to construct the most sophisticated machines ever built, but if they are unusable, simply because of their operating instructions, then recent lessons have taught us they will not survive. Whatever we design must be simple, reliable and useful. Perhaps this is where artificial intelligence will come in.

Which of the following statements is NOT true about the digital convergence?

A.It combines various media such as television and Internet together.

B.If achieved, it will be better than the well-reputed "information superhighway".

C.The technology is difficult to achieve as it seems impossible to establish platforms.

D.It is simply a technology that will play an important role in our lives.

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第9题
Japanese Car Keeps Watch for Drunk DriversA concept car developed by Japanese Company Niss

Japanese Car Keeps Watch for Drunk Drivers

A concept car developed by Japanese Company Nissan has a breathalyzer-like detection system and other instruments that could help keep drunk or over-tired drivers off the road.

The car's sensors check odors inside the car and monitor a driver's sweat for traces of alcohol. An in-car computer system can issue an alert or even leek up the ignition system if the driver seems over-the-limit. The air odor sensors are fixed firmly and deeply in the driver and passenger seats, while a detector in the gear-shift knob measures perspiration from the driver's palm.

Other carmakers have developed similar detection systems. For example, Sweden's Volvo has developed a breathalyzer attached to a car's seat belt that drivers must blow into before the engine will start.

Nissan's new concept vehicle also includes a dashboard-mounted camera that tracks a drivers alertness by monitoring theft eyes. It will sound an alarm and issue a spoken warning in Japanese or English if it judges that the driver needs to pull over and rest.

The car technology is still in development, but general manager Kazuhiro Doi says the combination of different detection systems should improve the overall effectiveness of the technology. "For example, if the gear-shift sensor was bypassed by a passenger using it instead of the driver, the facial recognition system would still be used," Doi says. Nissan has no specific timetable for marketing the system, but aims to use technology to cut the number of fatalities involving its vehicles to half 1995 levels by 2015.

The car's seat belt can also tighten if drowsiness is detected, while an external camera checks that the car is keeping to its lane properly. However, Doi admits that some of the technology, such as the alcohol odor sensor, should be improved. "If you drink one beer, it's going to register, so we need to study what's the appropriate level for the system to activate," he says.

In the UK, some research groups are using similar advanced techniques to understand driver behavior. and the effectiveness of different road designs.

Which of the following statements is NOT true of the Japanese concept car?

A.It has a sensor system that could issue a warning if the driver is drank.

B.It has sensors that detect traces of alcohol inside the car.

C.It has sensors locked up in the ignition system.

D.It has a breathalyzer-like detection system.

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第10题
The flight attendant Just made me__ down the shade.

A.pull

B.pulled

C.to pull

D.pulling

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