two factors system

As shown, object A and B with mass of m1 and m2 are put on a smooth surface of a table and they are connected through a light spring. Another two objects C and D are on objects A and B, and the frictional factors between A and C, B and D are not equal to zero. An external force pushes on A and B along the horizontal direction and the spring is compressed. As removing the external force during the process of A and B being apart away， for the system of A, B, C, D and the spring we have（）

A、Both momentum and mechanical energy are conserved;

B、Momentum is not conserved while mechanical energy is conserved;

C、Both momentum and mechanical energy are not conserved;

D、Momentum is conserved , while mechanical energy is not necessarily conserved.

United States and its【C2】______resources have been often cited as important reasons for the rapid【C3】______of American economy. They are true to a great extent. But, then, there are other countries in the world that are【C4】______with similar natural conditions and yet have【C5】______developed to the same degree of economic power as the United States has. So, there must be reasons【C6】______the size the country and the natural resources it possesses. According to the【C7】______. argument, the remarkable achievements of the U. S. economy are primarily【C8】______the system【C9】______which it has been operating since the founding of the nation- American capitalism.

It is true that American capitalism should be【C10】______with the achievements of its economy, the question【C11】______immediately comes to our mind is what are the essential【C12】______and construct their significance in the【C13】______of American economy, we shall then be able to make a good【C14】______of the key factors that have【C15】______to the phenomenal growth of American economy in the past two centuries.

First and【C16】______, American capitalism is organized as a private enterprise system for private profit,【C17】______the resulting rewards protected by the state as private【C18】______. This, in fact, is the general【C19】______of American economic institutions, underlining the social structure【C20】______which American society has been built.

【C1】

A．contributed

B．attributed

C．distributed

D．owned

d States and its【B2】resources have been often cited as important reasons for the rapid【B3】of American economy. They are true to a great extent. But, then, there are other countries in the world that are【B4】with similar natural conditions and yet have【B5】developed to the same degree of economic power as the United States has. So, there must be reasons【B6】the size the country and the natural resources it possesses. According to the【B7】argument, the remarkable achievements of the U.S. economy are primarily【B8】the system【B9】which it has been operating since the founding of the nation—American capitalism.

It is true that American capitalism should be【B10】to the achievements of its economy. The question【B11】immediately comes to our mind is what are the essential【B12】and construct their significance in the【B13】of American economy, we shall then be able to make a good【B14】of the key factors that have【B15】to the phenomenal growth of American economy in the past two centuries.

First and【B16】, American capitalism is organized as a private enterprise system for private profit,【B17】the resulting rewards protected by the state as private【B18】. This, in fact, is the general【B19】of American economic institutions, underlining the social structure【B20】which American society has been built.

【B1】

A．contributed

B．attributed

C．distributed

D．owned

RCH, an international hotel group with a very strong brand image has recently taken over TDM, an educational institution based in Western Europe. RCH has a very good reputation for improving the profitability of its business units and prides itself on its customer focus. The CEO of RCH was recently quoted as saying ‘our success is built on happy customers: we give them what they want’. RCH continually conducts market and customer research and uses the results of these researches to inform both its operational and longer term strategies. TDM is well-established and has always traded profitably. It offers a variety of courses including degrees both at Bachelor and Masters levels and courses aimed at professional qualifications. TDM has never seen the need for market and customer research as it has always achieved its sales targets. Its students consistently achieve passes on a par with the national average. TDM has always had the largest market share in its sector even though new entrants continually enter the market. TDM has a good reputation and has not felt the need to invest significantly in marketing activities. In recent years, TDM has experienced an increasing rate of employee turnover. RCH has developed a sophisticated set of Critical Success Factors which is integrated into its real time information system. RCH’s rationale for the take over of TDM was the belief that it could export its customer focus and control system, based on Critical success Factors, to TDM. RCH believed that this would transform TDM’s performance and increase the wealth of RCH’s shareholders. Required: identify four Critical Success Factors which would be appropriate to use for TDM. Recommend, with reasons, two Key Performance Indicators to support each of the four Critical Success Factors you have identified.

From the logistical system viewpoint, （） are fundamental factors to transportation performance.

From the logistical system viewpoint，()are fundamental factors to transportation performance．

A．cost

B．speed

C．consistency

D．procurement

rmance，these are()．

A．istency

B．cost

C．speed

D．housing

hich factors must be most considered when developing acceptance creteria？（）

A.Match with requirements B.User availability C.Ablity to benchmark system D.Schedule of system delivery

What are the factors that influence our construction of ethical system？

A.Social norms

B.Legal systems

C.Religions, philosophies and cultures

D.History, philosophies and countries

ery society must provide a domestic context in which the children are brought up and educated. In present day English, the word ‘family’ has two meanings: firstly, the【1】group of parents and children; and secondly, a【2】of relations who might be expected to【3】at a wedding or a【4】. At the first level, my brothers and sisters and myself are all in the same【5】as children, but in different ones as parents; but at the second【6】, we're all in the same family from start to finish.

As nuclear families become more【7】, families of relations become more dispersed (分). The young mother can still talk to her Mum on the phone, but she can't ask her to【8】for a few minutes to watch the baby. Ideas about the【9】of women have been changing: wives are thought to be the【10】of their husbands rather than their【11】. But perhaps they're more【12】enslaved to their children than before. The point is that there doesn't seem to be any【13】. There is a genuine【14】between the right of the woman to be treated as a free and self-respected【15】, and the right of the child to demand care and【16】.

We have created for ourselves three【17】: social equality of men and women:【18】of the marriage; and lifelong love and【19】between parents and children. However, we have【20】a social system in which it's quite impossible for these factors to co-exist.

(1)

A．permanent

B．rigid

C．casual

D．domestic