题目内容
已知ABC公司与库存有关的信息如下：(1)年需求数量为30 000单位(假设每年360天)；(2)每单位库存每年的保持费用为20元；(3)现在每次订货数量为600单位；(4)实现每次订单的费用为30元；(5)订货数量只能按100的倍数(四舍五入)确定。求：(1)年维持费用(年维持费用=平均库存×每单位库存每年的保持费用)。(2)年订货费用(年订货费用=年订单次数×每份订单的费用)。(3)年总费用(年总费用=年维持费用+年订货费用)。(4)当订货数量为1000单位时的年总费用。(5)最优经济订货量。
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Between 1833 and 1837, the publishers of a "penny press" proved that a low-priced paper, edited to interest ordinary people, could win what amounted to a mass circulation for the times and thereby attract an advertising volume that would make it independent. These were papers for the common citizen and were not tied to the interests of the business community, like the mercantile press, or dependent for financial support upon political party allegiance. It did not necessarily follow that all the penny papers would be superior in their handling of the news and opinion functions. But the door was open for some to make important journalistic advances. The first offerings of a penny paper tended to ’be highly sensational; human interest stories overshadowed important news, and crime and sex stories were written in full detail. But as the penny paper attracted readers from various social and economic brackets, its sensationalism was modified. The ordinary reader came to want a better product, too. popularized style of writing and presentation of news remained, but the penny paper became a respectable publication that offered significant information and editorial leadership. Once the first of the successful penny papers had shown the way, later ventures could enter the competition at the higher level of journalistic responsibility the pioneering paper, had reached. This was the pattern of American newspapers in the years following the founding of the New York Sun in 1833. The Sun, published by Benjamin Day, entered the lists against 11 other dailies. It was tiny in comparison; but it was bright and readable, and it preferred human interest features to important but dull political speech reports. It had a police reporter writing squibs of crime news in the style already proved successful by some other papers. And, most important, it sold for a penny, whereas its competitors sold for sir cents. By 1837 the Sun was printing 30,000 copies a day, which was more than the total of all 11 New York daily newspapers combined when the Sun first appeared. In those same four years James Gordon Bennett brought out his New York Herald (1835), and a trio of New York printers who were imitating Day’s success founded the Philadelphia Public Ledger (1836) and the Baltimore Sun (1837). The four penny sheets all became famed newspapers. As the readership was growing more diverse, the penny paper ______.
SCHOOL A Ellesmere College is one of the fastest-growing independent schools in the country over the past two years, with pupils’’ number rising by almost 20% . The growth has led to a $1 million investment program in 1999 and the building of a new lower school for boys and girls aged nine to thirteen. The new lower school will be the largest single building project at the college since its foundation in 1884. In the senior school, two-thirds of the pupils are boarders, and boarding is available from the age of 11. The six form is strong with over 120 pupils; there is an exceptionally wide-range of subjects on offer and the College has pioneered the use of video conferencing technology as a way of enhancing its curriculum. Microsoft Office qualifications are also available in the sixth form. The College is set in extensive grounds in the beautiful North Shropshire Lake District. Facilities are excellent and various, and include many sports fields, six all-weather tennis courts, indoor and outdoor shooting ranges, a nine-hole golf course and a purpose-built theater. The College sailing club has boats within walking distance on Whitemere. The majority of the day pupils at the College use the College bus service which covers a very wide area. Boarding throughout the School has benefited from a recent multimillion pound refurbishment which has done away with dormitories in favor of modem, comfortable rooms, the largest sleeping six, but most sleeping two or one. Academic standards are high for a school with a broad entry range. Many scholarships are awarded across a range of talents, but the emphasis of an Ellesmere education is firmly on breadth with each pupil achieving his or her full potential, whatever that may be. Recent pupil successes range from international honors in shooting, fencing and canoeing to a recent leaver’’s election — after only one year as an undergraduate — to an Exhibition in Chemistry at Jesus College, Oxford. The College has a national reputation for the quality of its dyslexia provision.SCHOOL B The choice of the right school for your son or daughter is important. For over 100 years Edgehill College has proudly prepared independently-minded young people to take their place in a world of rapidly advancing technology. The foundations of a sound education are laid down early in life. Edgehill does this within the friendly walls of its prep school, learning through enjoyment begins at the age of three and continues to the point where pupils can proceed smoothly and confidently into senior school. Entry to the prep school is by interview and to the senior school by examination at 11 + , 12 + , 13 + and 16 + . Edgehill is a friendly, caring and purposeful community with a reputation for high academic achievement. Students are encouraged to reach their potential and develop their talents to the full. A reputation for achievement in music and drama is matched by outstanding results in sports, for which Edgehill students enjoy some of the finest facilities in the West Country. There are excellent recreational opportunities in the contrasting beauties of the North Devon coast and Dartmoor. The College motto " Beyond the Best There Is a Better" can certainly sum up the achievements of Edgehill students. The accolade of winning the Schools Curriculum Award in 1997 gave Edgehill national recognition and, recently, the College has been chosen as a National Coaching Foundation Center, confirming its place as a leading southwest school. Parents naturally worry when their children are away at school so great emphasis is placed on pastoral care. Edgehill is more than a school with high standards of education; it prides itself on tradition, firm but friendly discipline and a keen sense of moral values. The demands of the world of the future, changes in family lifestyle and in work patterns serve only to underline the advantage of an Edgehill education where qualifications matched by confidence and good manners enable students to make their mark in whatever career they choose. All this makes Edgehill College a rather special school — a school that offers the best for your children.SCHOOL C The School has exceptional facilities for academic work, including good laboratories, an attractive circular library and separate areas for music, drama, craft, art and design, technology and business studies. There is a fine chapel and well-equipped medical center. Sporting facilities include a new sports hall, finished and equipped to the highest international standards, as well as an indoor swimming pool, 12 tennis courts and superb playing fields. The School is set in 300 acres, 30 minutes from central London and Heathrow International Airport. The School caters for girls of average ability and above but it is not narrowly academic. The core subjects of the national curriculum provide a balanced basic education. A wide range of GSCE options provides courses for girls of varying abilities and interests. Regular high standard performances in music and drama, public speaking and debating are important preparation for adult life. Brownies, Guides, Duke of Edinburgh’’s and young Enterprise schemes all flourish, alongside clubs and societies for all ages. Scholarships for academic merit at every stage. Six scholarships every year are available only the daughters of Freemasons. Additional minor awards for music, art and business studies in the sixth form. The sixth form offers all the traditional academic subjects at A-level alongside more popular additions like psychology and theater studies. GNVQ (advanced) in business studies and health and social care provides an alternative vocational pathway to university or a direct route into employment. Every year a number of new girls join at this stage. All have opportunities for leaderships and responsibility. The emphasis is on each girl fulfilling her own potential and finding an area in which she can excel. We pride ourselves on building self-esteem and nurturing a generosity of spirit which leads naturally on to a desire to serve the community. Which school applies advanced devices to teaching
A--Snapshot B--Word Power C--Conversation D--Grammar Focus E--Pair Work F--Role Play G--Group Work H--Class Activity I--Pronunciation J--Listening K--Writing L--Reading M--Interchange Activities N--Additional Optional Activities O--Achievement tests ( )会话练习 ( )辅助活动扩展
Can the Internet help patients jump the line at the doctor’s office The Silicon Valley Employers Forum, a sophisticated group of technology companies, is launching a pilot program to test online "virtual visits" between doctors at three big local medical groups and about 6,000 employees and their families. The six employers taking part in the Silicon Valley initiative, including heavy hitters such as Oracle and Cisco Systems, hope that online visits will mean employees won’t have to skip work to tend to minor ailments or to follow up on chronic conditions. "With our long commutes and traffic, driving 40 miles to your doctor in your hometown can be a big chunk of time," says Cindy Conway, benefits director at Cadence Design Systems, one of the participating companies. Doctors aren’t clamoring to chat with patients online for free; they spend enough unpaid time on the phone. Only 1 in 5 has ever E-mailed a patient, and just 9 percent are interested in doing so, according to the research firm Cyber Dialogue. "We are not stupid," says Stifling Somers, executive director of the Silicon Valley employers group. "Doctors getting paid is a critical piece in getting this to work." In the pilot program, physicians will get $ 20 per online consultation, about what they get for a simple office visit. Doctors also fear they’ll be swamped by rambling E-mails that tell everything but what’s needed to make a diagnosis. So the new program will use technology supplied by Healinx, an Alameda, Calif-based start-up. Healinx’ s "Smart Symptom Wizard" questions patients and. turns answers into a succinct message. The company has online dialogues for 60 common conditions. The doctor can then diagnose the problem and outline a treatment plan, which could include E-mailing a prescription or a face-to-face visit. Can E-mail replace the doctor’s office Many conditions, such as persistent cough, require stethoscope to discover what’s wrong and to avoid a malpractice suit. Even Larry Bonham, head of one of the doctor’s groups in the pilot, believes the virtual doctor’s visits offer a "very narrow" sliver of service between phone calls to an advice nurse and a visit to the clinic. The pilot program, set to end in nine months, also hopes to determine whether online visits will boost worker productivity enough to offset the cost of the service. So far, the Internet’s record in the health field has been underwhelming. The experiment is "a huge roll of the dice for Healing", notes Michael Barrett, an analyst at Internet consulting firm Forester Research. If the "Web visits" succeed, expect some HMOs (Health Maintenance Organizations) to pay for online visits. If doctors, employers, and patients aren’t satisfied, figure on one more E-health start-up to stand down. Of the following people, who are not involved in the program
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