• <tr id="yyy80"></tr>
  • <sup id="yyy80"></sup>
  • <tfoot id="yyy80"><noscript id="yyy80"></noscript></tfoot>
  • 99热精品在线国产_美女午夜性视频免费_国产精品国产高清国产av_av欧美777_自拍偷自拍亚洲精品老妇_亚洲熟女精品中文字幕_www日本黄色视频网_国产精品野战在线观看 ?

    The application of Scientific Management in contemporary society

    2018-08-15 10:32:42季心禾
    校園英語·下旬 2018年3期

    季心禾

    【Abstract】Scientific Management has challenged previous working methods and influenced the world deeply, while some managers doubt if this theory still apply to modern companies. This article attempts to examine what Scientific Management is and how deeply it affects companies in 20th century. In addition, to a small extent modern companies had jettisoned this methods due to the efficient design and relevance with human nature.

    【Key words】Scientific Management; modern corporate organization; 21st century

    I. Introduction

    Scientific management, which is also named Taylorism, was created by Frederick W. Taylor in 1911. It has been rated as first among 45 most important management theories in 20th century by 1000 CEOs of large-scale enterprises (Qiu, 2004). However, it also has been debated by many scholars whether the theory has become outmoded and could not adapt to the new environment. Thus, an important consideration is by the beginning of the 21st century, the extent to which modern corporate organisations had jettisoned the methods of work design associated with Scientific Management. If we understand this, companies will get better efficiency and establish more competitive advantages. This essay will argue that despite some limitations of the theory, modern companies to a small degree has given up work design combining with Scientific Management. As will be demonstrated, there are three main parts of this essay: first, what Scientific Management is and how it affects companies in 20th century, second, illustrating in details to a small extent Taylorism has been jettisoned as a work design in 21st century, and third, the reasons.

    II. Definition of Scientific Management and its influence in the 20th Century

    To begin, it is important to understand what Scientific Management is to better anaylse the main question. The core of Taylorism is normalising regulations and rules through systematically planning and calculating all elements of the labour process (Taylor, 1911). Within this theory, employers bear considerable responsibility. On the one hand, they need to make instructions in advance through timing every process and integrating the optimum options of procedure systematically to minimize the time incurred (Taylor, 1911; Braverman, 1974). In particular, the instructions include which tasks and by what means to complete the tasks (Taylor, 1911). On the other hand, employers select appropriate employees and trained them thoroughly to ensure them follow the given instructions completely (Taylor, 1911; Braverman, 1974).

    However, there is some debate about the features of Taylorism. Braveman (1974) critises it as ‘dehumanisation and deskilling. To some extent, workers are just machines when they are working because they do ‘spoon feeding tasks—mastering and repeating the requirements of their specific jobs passively, instead of thinking how to improve themselves and learning more skills in other domains; whereas McLoughlin and Clark (1988) consider Braverman neglected Taylorism was ‘a(chǎn)n expression of inevitable technology influence as the widespread use of machines after the Industry Revolution consequently produce the idea of uniform work.

    Despite these arguments, Taylorism was widely practiced in 20th century. A particular well-known application of Taylorism is Fordism (Hounshell, 1984). Ford also emphases rational and standardized individual jobs using time and motion techiques, but he designs for mass production (Huczynski and Buchanan, 2007). Assembly line was created, and the speed of workers are imposed by the assembly line rather than their own, which not only improves quantity, but also focuses on ‘power, accuracy, economy, system, continuity, speed and repetition (Ford, 1924). The successful practice of Fordism further proves and complements Taylorism.

    There is no doubt that Taylorism had changed the ordinary management in various ways. For example, the ‘rule-of-thumb method of employees was scrapped in favour of uniform science procedures designed by employers. Employers now adopt one standard method of the work and one particular pay system as well, and job fragment is put into work design. In addition, individual work replaces group work. (see for example, Taylor, 1911; Braverman, 1974, McLoughlin & Clark, 1988).

    III. To what extent Scientific Management has been jettisoned in 21st century?

    The start of the 21st century witnessed a sharp increase in the number of modern companies, which utilise technology and applies modern management techniques, regardless of its start time and scale. For example, Toyota can be considered a modern company although it was established in 1933, as it uses advance technologies and management methods like lean production to produce cars efficiently (Womack, J.D. et al. 1990).

    However, if corporations still exclusively used Scientific Management, there would be a high possibility of disaster, because the drawbacks of Taylorism become increasingly evident with the widespread application of its practice in 21st century. GM-Fremont was a follower of Taylorism, and it is also a typical company suffering from workers negative reactions. It was reported that it ‘had low productivity, abysmal quality, drug and alcohol abuse, and absenteeism over 20% (Adler, 2000). GM-Fremont had no choice but to make a joint venture with Toyota to accept a new management approach to solve the status quo.

    The essential element of Taylorism has not been jettisoned. On the contrary, ‘its fundamental teachings have become the bedrock of all work design (Braverman, 1974, p. 87). Taylor emphasises that only systematic management can address inefficiency (Taylor, 1911). It is evident that non-discretion represents uniformity and better controlling. The former can be reduced due to lack of knowledge and experience of workmen and can bring about high quality and be highly-efficient if the system is sound (Taylor, 1911; Braverman, 1974). The latter makes it easy to adapt to the continuing changes. For example, Kanban controls have been adapted in Toyota to inform workers so they know ‘what parts are needed and when (Conti & Warner, 1993). Although it is the product of JIT, which will be explained explicitly later, the essentials of Kanban are based on and same to Taylorism—rationalization and efficiency (Taylor, 1911; Conti & Warner, 1993).

    In addition, contemporary corporations still accept what Taylor believes that the fundamental interests between employers and employees are same, albeit in a different way. Common interests motivated Taylor to focus on building highly efficient system that allows for greater output in the same time, which would bring relatively more wages for workers, and at the same time lead to less labour costs for the managers, thus satisfying both parties interests (Taylor, 1911; Braverman, 1974). In the 21st century, companies also stress the importance of a win-win situation between employers and employees. Tom Peters (2014) believes that the main duty for a leader is to help people develop, create an energetic and exciting environment and give employees more growth opportunities. On the other hand, candidates who are productive, energetic and agree with the companys value are also more likely to be recruited by a modern company. For example, McKinsey, a famous consulting company, seeks for people who are team players, who possess an entrepreneurial drive, and who have problem-solving skills. These qualities are in accordance with McKinseys culture, and can help to attract more clients to the company (McKinseys website).

    However, the modern corporations in the 21st century to a moderate degree has jettisoned the three strict principles of Taylorism, as well as its distinctive feature—the dimension of control, adding new management ideas to the old one. The first principle is the dissociation of the labour process from the skills of the workers (Braverman, 1974, p. 113). In order to prevent workers from casual or unsystematic discretion about the amount of work per day, managers integrate their knowledge of the labour process (Taylor, 1911; Braverman, 1974). This principle is still accepted nowadays, where organisations like McDonald assigns instructions containing pre-designed process to employees, who are trained to behave this way and are watched by managers closely to ensure high efficiency (Ritzer, 2000). In addition, to complement the rationality system and appeal to demand, Ohno Taiichi, a former vice president at Toyota, developed the ‘Just In Time formula, adding real-time information to indicate ‘production capacity, stock usage, and manpower utilization (Sewell,Wilkinson, 1992) through Kanban cards. This system minimises large capital investment in inventory and identifies underlying problems clearly via reducing buffers (Robert & Malcolm, 1993).

    Separation of conception from execution is the second and most important principle in Taylorism (Braverman, 1974, p. 114), which has been jettisoned to a large extent especially when the notion ‘learning organisation created by Peter M. Senge attracts increasing attention by modern organizations. Taylor insisted ‘a(chǎn)ll possible brain work should be removed from the shop and centered in the planning or laying-out department (Taylor, 1903, p. 98-99). It regards labour as a part of capital rather than a human being, and ‘only the possessors of capital can afford labour time through selling labour time ‘for their means of subsistence(Braverman, 1974). This means workers ‘lose control over their own labour and the manner of performance (Braverman, 1974). This work design accelerates the speed of working in the short run, but it decreases workers motivation in the long run especially when employees do not understand why they do this. There might be some flaws in the production which are ignored by employers but workers have no ability to change them. However, learning organization focuses on developing group problem solving abilities through ‘fostering aspiration, developing reflective conversation, and understanding complexity of workers (Gharajedaghi, 2006). For example, NUMMI allows ‘workers themselves in a continuous, successful effort to improve productivity, quality, skills (Adler, 2000). Furthermore, the bureaucracy provides support to help workers investigate better (Adler, 2000). This learning-based structure can relieve worker exhaustion of being forced to operate through stimulating curiosity to unknown things. Thus it dramatically increases the motivation and job satisfaction of workers and improves quality and innovation of the whole organisation(Adler, 2000).

    Modern companies have partly given up the third principle—the use of this monopoly over knowledge to control each step of the labor process and its mode of execution (Braverman, 1974, p. 119). Taylor proposes that foremen shoulder the responsibility to encourage the workmen to carry out the orders exactly as specified on the instruction cards (Taylor, 1903, p. 108). However, it is common for workmen to behave completely differently with and without the supervision of managers because workers are reluctant to behave like that. Hence, they work productively while under observation but work slowly without supervisors (Adler, 2000). To solve this problem, a portion of execution is allocated to workers. NUMMI allows peer supervision among team members. Workers use a stopwatch and try to improve by themselves, balancing the power distribution and increasing morale and innovation (Adler, 2000).

    In addition, the feature—strong intensity of control in Taylorism is also changed. Every labour activity, no matter the complexity level and perception of importance, is under control (Braverman, 1974). In other words, Taylor does not give decision-making and rebellion rights for workers. There is no doubt that control is a necessity in management. However, it does not mean that the more intensive control, the better consequence. Appropriate ratio of power and autonomy can improve employers motivation and give vigour to the organization, like the situation regarding the second principle, giving employees the right to learn and design their own job.

    IV. Why does it change and does not change?

    The most thought-provoking point of Taylorism is that the foundations and principles integrate not only the efficient approaches of working, but also insights of human nature. That is why essentially it is rooted in job design.

    There is no doubt that scientific working procedures is a crucial element for companies. The core job design of Taylorism is based on Time and Motion study, focusing on shaving time off each procedure, and combining process to save as much time as possible. Improving the quantity of output per hour is an excellent but not the only scientific way. Different types of jobs require exploring different efficient methods, but Scientific Management provides a thought and good example for managers to draw lessons from.

    Taylor shows insightful understanding of human nature by observing that sloth and the desire to be treated equally lead to decreased productivity if foremen work without quantity limitation and at a uniform standard rate of pay (Taylor, 1911). It is true that without evaluation and motivation, we lack the power to keep pounding away at especially the tedious work. Based on this insight, Scientific Management regulates the maximum outputs every worker can meet and increases wages for those who successfully meet it to eliminate inequity (Taylor, 1911).

    But why has it changed? The direct reason is decreasing profits and decreasing productivity due to the negative responses of workers, as I have mentioned before. To go much further, Taylorism neglects ‘psychological needs and capabilities of workers (Huczynski and Buchanan, 2007, p. 418). According to Maslows Hierarchy of Needs, employees do not just focus on the basic requirements of physical and safety needs. They pay more attention to love and belonging needs as well as esteem needs, even self-actualisation, preferring to choose a humanised workplace and harmonious relationship. However, Taylorism can only meet the first two needs because the inherent antipathy feeling towards the enforcement of monotonous work prevents the work from feeling being loved.

    Advances in technology are also a contributor to this change, but not fundamental. More jobs related to computers and high-tech require considerable thinking from employees, and employers are incapable of gathering all the knowledge due to the booming of information, which has to be considered into job design but is contradictory to second principle—the separation of conception from execution (Braverman, 1974, p.114). Control of work operations in technology-based environment is likely to be more automated comparing with manufacturing industry, but human intervention is still required (McLoughlin & Clark, 1988).

    Another reason is the increasing attention on corporate culture, which appeals to the dualism of human nature (Durkheimian, 1973, p. 158). Employees paradox feelings of desire for attention and being different as well as sense of belongings have been noticed (Ray, 1986). Employers try to take advantage of this principle to appeal to emotion of employees, including guaranteeing lifetime employment and paying graded by seniority instead of specific job function (Womack, J.D. et al. 1990). These actions can extensively manage workforce in affection domain and receive enduring trust in order to lower the rate of job-hopping and increase cohesion.

    In addition, modern corporate organisations have emphasised on team learning, which is opposite to individual work design of Taylorism. As one characteristic of learning organisation, team work requires critical and independent individual thinking as well as communication and cooperation skills, promoting ‘creation, acquisition, dissemination and implementation of this knowledge in the organisation (Wang and Ahmed, 2003). The learning environment of NUMMI is based on teams, which improves the workers understanding and mastery of skills as well as the creativity of whole organisation (Adler, 2000).

    V. Conclusion

    In conclusion, the modern companies in this new era has to a small extent given up on employing Taylorism as a work design. The core of Scientific Management and what Taylor believes the essential interest of work is still adopted because Taylorism provides a good method to design work and utilises human nature. However, modern organisations combine new thoughts with the principles and features because of workers reaction, work psychology, technology, corporate culture and team work.

    It is predictable that Scientific Management will still remain popular and be rooted in job design in the future because of the combination of efficient methods and human nature, and it will continue to be integrated with new theories to better adapt to the new environment, new challenges, and of course, new opportunities.

    References:

    [1]Adler,P.S.(1993).Time and Motion Regained.Harvard Business Review.Jan-Feb 1993.

    [2]Braverman,H.(1974).Labour and Monopoly Capital:The Degredation of Work in the Twentieth Century,New York:Monthly Review Press.

    [3]Conti,R.F.& Wamer,M.(1993).Taylorism,new technology and just-in-time systems in Japanese manufacturing.New Technology,Work and Employment.vol.8,no.1,pp.31-42.

    [4]Durkheim,E.(1973).On Morality and Society:Selected Writings(Bellah,R.(Ed.)),Chicago:University of Chicago Press.

    [5]Ford,H.& Crowther,S.(1924).My life and work,London:Heinemann.

    [6]Gharajedaghi,J.(2006).Systems Thinking:Managing Chaos and Complexity,Amsterdam and Boston:Elsevier.

    [7]Heywood,S.& Smet,A.D.(2014).Tom Peters on leading the 21st-century organization.www.mckinsey.com/business-functions/organization,our-insights/tom-peters-on-leading-the-21st-century-organization.

    [8]Hounshell,D.A.(1984).From American system to mass production 1800-1932:The development of manufacturing technology in the United States,Baltimore:Johns Hopkins University Press.

    [9]Huczynski,A.A.& Buchanan,D.A.(2007).Organizational Behaviour,Harlow:Pearson.

    [10]Maslow.A.H.(1943).A Theory of Human Motivation,Psychological Review.50,370-396.

    [11]Mckinsey&Company;/Greater China/Careers.www.mckinseychina.com/careers/.

    [12]McLoughlin,I.& Clark,J.(1988).Technological Change at Work,Milton Keynes:Open University Press.

    [13]Qiu,Q.J.(2004).The management of changing the world,Beijing:Economic Press·China.

    [14]Ray,C.A.(1986).Corporate Culture:The Last Frontier of Control? Journal of Management Studies.23,287-297.

    [15]Ritzer,G.(2000).The McDonaldization of Society,London:Pine Forge Press.

    [16]Senge,P.M.(1992).The Fifth Discipline:the art and practice of the learning,London:Century Business.

    [17]Taylor,F.W.(1903).Shop Management,New York and London: Harper&Brothers.;

    [18]Taylor,F.W.(1911).The Principles of Scientific Management,New York and London:The Plimpton Press and Norwood Mass.

    [19]Wang,C.L.and Ahmed,P.K.(2003).Organizational learning:a critical review.The learning organization.10(1) pp.8-17.

    [20]Womack,J.D.et al.(1990).The Machine that Changed the World, New York:Macmillan.

    如何舔出高潮| 国产精品综合久久久久久久免费| 91麻豆精品激情在线观看国产| 久久久精品欧美日韩精品| 亚洲国产色片| 中文字幕久久专区| 日韩中文字幕欧美一区二区| 免费电影在线观看免费观看| 啪啪无遮挡十八禁网站| 亚洲精品乱码久久久v下载方式| 国产免费男女视频| 国产不卡一卡二| 18禁在线播放成人免费| aaaaa片日本免费| 日日夜夜操网爽| 国产亚洲精品久久久久久毛片| 男女下面进入的视频免费午夜| 偷拍熟女少妇极品色| 18禁黄网站禁片午夜丰满| 亚洲天堂国产精品一区在线| 国产视频一区二区在线看| 黄色女人牲交| 欧美日韩综合久久久久久 | 精品一区二区三区人妻视频| 国产欧美日韩一区二区三| 欧美激情在线99| 亚洲第一欧美日韩一区二区三区| 搡老熟女国产l中国老女人| 日韩精品青青久久久久久| 哪里可以看免费的av片| 精品人妻熟女av久视频| 99久久精品一区二区三区| 精品一区二区三区人妻视频| 久久久久久国产a免费观看| 亚洲欧美日韩高清专用| 亚洲av中文字字幕乱码综合| 亚洲专区中文字幕在线| 最近视频中文字幕2019在线8| 亚洲五月婷婷丁香| 成人一区二区视频在线观看| 91午夜精品亚洲一区二区三区 | 99精品久久久久人妻精品| 亚洲在线自拍视频| 日本免费一区二区三区高清不卡| 精品久久国产蜜桃| 麻豆国产av国片精品| 久久久久久久亚洲中文字幕 | 国产成人av教育| 99久久精品一区二区三区| 老熟妇仑乱视频hdxx| 国产一区二区在线av高清观看| 国产精品嫩草影院av在线观看 | 日日摸夜夜添夜夜添av毛片 | 美女xxoo啪啪120秒动态图 | 亚洲熟妇中文字幕五十中出| 51国产日韩欧美| 免费一级毛片在线播放高清视频| 国产高潮美女av| 长腿黑丝高跟| 欧美色欧美亚洲另类二区| 真人做人爱边吃奶动态| 国产av在哪里看| 国产一区二区三区在线臀色熟女| 国产v大片淫在线免费观看| 日韩国内少妇激情av| 精品久久久久久,| 免费观看人在逋| 性欧美人与动物交配| 国产伦在线观看视频一区| 午夜免费成人在线视频| 我要搜黄色片| 亚洲avbb在线观看| 久久精品91蜜桃| 亚州av有码| 国产精华一区二区三区| 免费人成在线观看视频色| 三级国产精品欧美在线观看| 久久久久久国产a免费观看| 中文字幕精品亚洲无线码一区| 亚洲中文日韩欧美视频| 久久久久亚洲av毛片大全| 国产精品女同一区二区软件 | 两性午夜刺激爽爽歪歪视频在线观看| 草草在线视频免费看| 久久天躁狠狠躁夜夜2o2o| 午夜福利成人在线免费观看| 国产亚洲精品久久久久久毛片| 亚州av有码| 国产淫片久久久久久久久 | 色吧在线观看| 麻豆成人午夜福利视频| 一本综合久久免费| 久久99热这里只有精品18| 最后的刺客免费高清国语| 老女人水多毛片| 亚洲国产高清在线一区二区三| 日韩欧美三级三区| 亚洲欧美激情综合另类| 看十八女毛片水多多多| 美女高潮喷水抽搐中文字幕| 久久99热6这里只有精品| 亚洲一区二区三区不卡视频| 国产高清激情床上av| 18禁裸乳无遮挡免费网站照片| 国产在线精品亚洲第一网站| 91久久精品电影网| 国产伦人伦偷精品视频| 国产久久久一区二区三区| 99视频精品全部免费 在线| 亚洲国产欧洲综合997久久,| 欧美丝袜亚洲另类 | www日本黄色视频网| 最近最新免费中文字幕在线| 午夜精品一区二区三区免费看| 国产高清视频在线播放一区| 狠狠狠狠99中文字幕| 色综合欧美亚洲国产小说| 一个人看的www免费观看视频| 久久精品国产亚洲av香蕉五月| 桃红色精品国产亚洲av| 韩国av一区二区三区四区| 18禁黄网站禁片免费观看直播| 欧美zozozo另类| 久久久久精品国产欧美久久久| 不卡一级毛片| 嫩草影院新地址| 国产久久久一区二区三区| 国产午夜福利久久久久久| 亚洲内射少妇av| 很黄的视频免费| 亚洲最大成人中文| 天堂√8在线中文| x7x7x7水蜜桃| 小说图片视频综合网站| a级毛片a级免费在线| 欧美3d第一页| 亚洲 欧美 日韩 在线 免费| 欧美性感艳星| 国产精品一区二区免费欧美| 国产高清视频在线播放一区| 91在线精品国自产拍蜜月| 亚洲精品乱码久久久v下载方式| 国产午夜福利久久久久久| 午夜福利免费观看在线| 亚洲精品乱码久久久v下载方式| 成年女人看的毛片在线观看| 亚洲性夜色夜夜综合| 99久国产av精品| 一级黄色大片毛片| a级毛片免费高清观看在线播放| 国产精品伦人一区二区| 99久久久亚洲精品蜜臀av| 亚洲性夜色夜夜综合| 亚洲久久久久久中文字幕| 午夜福利高清视频| 在线观看美女被高潮喷水网站 | 国产精品影院久久| 一边摸一边抽搐一进一小说| 99久久99久久久精品蜜桃| 国内揄拍国产精品人妻在线| 国产成人aa在线观看| 国产激情偷乱视频一区二区| 色噜噜av男人的天堂激情| 亚洲五月婷婷丁香| 亚洲,欧美,日韩| 婷婷六月久久综合丁香| 久99久视频精品免费| 一个人看视频在线观看www免费| 91麻豆精品激情在线观看国产| 18禁黄网站禁片午夜丰满| 国产探花极品一区二区| 国产精品av视频在线免费观看| 国产亚洲精品久久久com| 美女被艹到高潮喷水动态| 少妇人妻一区二区三区视频| 亚洲最大成人手机在线| 两性午夜刺激爽爽歪歪视频在线观看| 亚洲自偷自拍三级| 国产视频内射| 欧美最新免费一区二区三区 | 国产 一区 欧美 日韩| 午夜福利高清视频| 精品久久久久久久末码| 9191精品国产免费久久| 99热只有精品国产| 国产日本99.免费观看| 国产白丝娇喘喷水9色精品| 国产黄a三级三级三级人| 女人被狂操c到高潮| 亚洲成人免费电影在线观看| 男女之事视频高清在线观看| 成人欧美大片| 亚洲综合色惰| 极品教师在线视频| 成人国产一区最新在线观看| 免费观看的影片在线观看| 91九色精品人成在线观看| 精品久久久久久,| 性色av乱码一区二区三区2| 九九热线精品视视频播放| 少妇被粗大猛烈的视频| 亚洲av美国av| 国产精品久久视频播放| 久久国产精品人妻蜜桃| 国产伦在线观看视频一区| 国产三级中文精品| 亚洲国产欧洲综合997久久,| 18禁裸乳无遮挡免费网站照片| 国产精品伦人一区二区| 色综合婷婷激情| 国产精品av视频在线免费观看| 欧美一区二区亚洲| 非洲黑人性xxxx精品又粗又长| 亚洲久久久久久中文字幕| 啦啦啦观看免费观看视频高清| 在线观看免费视频日本深夜| 久久99热这里只有精品18| 久久天躁狠狠躁夜夜2o2o| 黄色丝袜av网址大全| 波野结衣二区三区在线| 亚洲综合色惰| 日韩亚洲欧美综合| 可以在线观看毛片的网站| 无遮挡黄片免费观看| 91久久精品国产一区二区成人| 亚洲av不卡在线观看| 国产一区二区三区视频了| 精品免费久久久久久久清纯| 免费av观看视频| 99久久精品热视频| 欧美成人免费av一区二区三区| 精品一区二区三区人妻视频| www.www免费av| 成人永久免费在线观看视频| 国产亚洲欧美在线一区二区| 久久人妻av系列| 精品久久久久久,| 1024手机看黄色片| 日本成人三级电影网站| 免费人成视频x8x8入口观看| 欧美绝顶高潮抽搐喷水| 久久久精品欧美日韩精品| 久久人妻av系列| 18禁黄网站禁片免费观看直播| 成人av在线播放网站| 老熟妇乱子伦视频在线观看| 一个人免费在线观看电影| 真实男女啪啪啪动态图| www.色视频.com| 身体一侧抽搐| 亚洲aⅴ乱码一区二区在线播放| 99热精品在线国产| 欧美黄色片欧美黄色片| 日本在线视频免费播放| 亚洲精品日韩av片在线观看| 精品一区二区三区视频在线| 亚洲av二区三区四区| 色综合站精品国产| 99热精品在线国产| 精品午夜福利在线看| 亚洲av电影不卡..在线观看| 亚洲自拍偷在线| 亚洲国产色片| 不卡一级毛片| 禁无遮挡网站| 九九在线视频观看精品| 亚洲av一区综合| 丁香六月欧美| 免费高清视频大片| 亚洲在线自拍视频| 精品乱码久久久久久99久播| av黄色大香蕉| 久久这里只有精品中国| 欧美日韩亚洲国产一区二区在线观看| 白带黄色成豆腐渣| 亚洲国产精品999在线| 婷婷亚洲欧美| 老熟妇仑乱视频hdxx| 亚洲熟妇中文字幕五十中出| 麻豆成人午夜福利视频| 国产精品不卡视频一区二区 | 制服丝袜大香蕉在线| 免费黄网站久久成人精品 | 高清毛片免费观看视频网站| 欧美潮喷喷水| 亚洲美女黄片视频| 午夜福利在线观看吧| 成人美女网站在线观看视频| 欧美一区二区精品小视频在线| 最近视频中文字幕2019在线8| 亚洲男人的天堂狠狠| 全区人妻精品视频| 欧美日韩中文字幕国产精品一区二区三区| 成年免费大片在线观看| 黄色配什么色好看| 黄片小视频在线播放| 精品人妻熟女av久视频| 欧美激情久久久久久爽电影| 一二三四社区在线视频社区8| 最新在线观看一区二区三区| 三级男女做爰猛烈吃奶摸视频| 男女做爰动态图高潮gif福利片| 精品一区二区免费观看| 最近最新免费中文字幕在线| 脱女人内裤的视频| 国产高潮美女av| 国产亚洲欧美在线一区二区| 简卡轻食公司| 熟妇人妻久久中文字幕3abv| 久久这里只有精品中国| 欧美成人性av电影在线观看| 久久伊人香网站| 欧美区成人在线视频| 十八禁网站免费在线| 国产日本99.免费观看| 国产精品久久久久久久电影| 嫁个100分男人电影在线观看| 国产黄片美女视频| 嫩草影院入口| 国产免费男女视频| 亚洲精品粉嫩美女一区| 午夜精品在线福利| 免费高清视频大片| 麻豆国产av国片精品| 色5月婷婷丁香| 欧美性猛交黑人性爽| 日韩大尺度精品在线看网址| 亚洲自偷自拍三级| 免费在线观看日本一区| 深夜精品福利| 国产色婷婷99| 亚洲av成人av| 免费观看精品视频网站| 国产一区二区在线av高清观看| 午夜精品一区二区三区免费看| 日韩欧美三级三区| 亚洲欧美日韩高清在线视频| 国产91精品成人一区二区三区| 精品99又大又爽又粗少妇毛片 | 一二三四社区在线视频社区8| 国产色爽女视频免费观看| 日韩欧美一区二区三区在线观看| 日本在线视频免费播放| 高清日韩中文字幕在线| 国产aⅴ精品一区二区三区波| 一进一出好大好爽视频| 十八禁国产超污无遮挡网站| 国产私拍福利视频在线观看| 亚洲在线自拍视频| 亚洲内射少妇av| 免费观看精品视频网站| 久久精品综合一区二区三区| 看黄色毛片网站| 欧美性猛交黑人性爽| 亚洲av中文字字幕乱码综合| 亚洲狠狠婷婷综合久久图片| 欧美日韩国产亚洲二区| 制服丝袜大香蕉在线| 特级一级黄色大片| 成人午夜高清在线视频| 国产白丝娇喘喷水9色精品| 免费人成视频x8x8入口观看| 日本成人三级电影网站| 给我免费播放毛片高清在线观看| 日本黄大片高清| 久久九九热精品免费| 日本黄色视频三级网站网址| 青草久久国产| 亚洲成人久久性| 久9热在线精品视频| 国产精品久久久久久久电影| 久9热在线精品视频| 一区二区三区高清视频在线| 欧美xxxx性猛交bbbb| 91字幕亚洲| 精品无人区乱码1区二区| 波多野结衣高清无吗| 三级毛片av免费| 嫩草影视91久久| 日韩 亚洲 欧美在线| 久久精品人妻少妇| 欧美3d第一页| 亚洲片人在线观看| 最近最新中文字幕大全电影3| 99热只有精品国产| 丁香六月欧美| 偷拍熟女少妇极品色| 熟妇人妻久久中文字幕3abv| 免费搜索国产男女视频| 国产精品亚洲一级av第二区| 在现免费观看毛片| 老熟妇仑乱视频hdxx| 国产成人av教育| av天堂在线播放| 老司机午夜十八禁免费视频| 精华霜和精华液先用哪个| 91麻豆av在线| av欧美777| 国产精品亚洲av一区麻豆| 1000部很黄的大片| 90打野战视频偷拍视频| 国产欧美日韩精品一区二区| or卡值多少钱| 国产精品乱码一区二三区的特点| 成人特级av手机在线观看| 直男gayav资源| 亚洲精品一区av在线观看| 能在线免费观看的黄片| 精品人妻1区二区| 国产单亲对白刺激| 精品国产三级普通话版| 国产在线精品亚洲第一网站| 亚洲av日韩精品久久久久久密| 韩国av一区二区三区四区| 观看美女的网站| 少妇高潮的动态图| 日韩高清综合在线| ponron亚洲| 97超级碰碰碰精品色视频在线观看| 自拍偷自拍亚洲精品老妇| 亚洲精品456在线播放app | 亚洲成人精品中文字幕电影| 欧美日韩亚洲国产一区二区在线观看| 我的女老师完整版在线观看| 亚洲三级黄色毛片| 舔av片在线| 国产探花极品一区二区| 国模一区二区三区四区视频| 一个人看的www免费观看视频| 久久午夜福利片| 午夜福利在线观看免费完整高清在 | 国产在线精品亚洲第一网站| 免费高清视频大片| 国产精品电影一区二区三区| 国产91精品成人一区二区三区| 久久久国产成人精品二区| 黄色日韩在线| 欧美一区二区亚洲| 色5月婷婷丁香| 欧美性猛交╳xxx乱大交人| 色综合婷婷激情| 噜噜噜噜噜久久久久久91| 看片在线看免费视频| 深夜精品福利| 黄色丝袜av网址大全| 久久99热这里只有精品18| 亚洲av不卡在线观看| 午夜福利欧美成人| 欧美日韩亚洲国产一区二区在线观看| 一级a爱片免费观看的视频| 一级av片app| 免费看a级黄色片| 午夜激情欧美在线| 国产三级中文精品| 国产精品美女特级片免费视频播放器| 老司机深夜福利视频在线观看| 久久久精品欧美日韩精品| 国产精品野战在线观看| 深爱激情五月婷婷| 国产黄片美女视频| 国产淫片久久久久久久久 | 亚洲欧美清纯卡通| 午夜福利在线在线| 内地一区二区视频在线| 国产av不卡久久| 欧美日韩国产亚洲二区| 国产伦人伦偷精品视频| 一本综合久久免费| 国产精品爽爽va在线观看网站| 脱女人内裤的视频| 国产高清视频在线观看网站| 十八禁国产超污无遮挡网站| 亚洲自偷自拍三级| 亚洲天堂国产精品一区在线| 久久中文看片网| 欧洲精品卡2卡3卡4卡5卡区| 亚洲自拍偷在线| 亚洲一区高清亚洲精品| 久久精品人妻少妇| 熟女人妻精品中文字幕| 亚洲第一区二区三区不卡| 一边摸一边抽搐一进一小说| 精品不卡国产一区二区三区| 免费搜索国产男女视频| 日本熟妇午夜| 我要搜黄色片| 搡老熟女国产l中国老女人| 国产一区二区在线av高清观看| 最近最新中文字幕大全电影3| 3wmmmm亚洲av在线观看| 成人鲁丝片一二三区免费| 日韩精品青青久久久久久| 午夜精品久久久久久毛片777| 欧美日韩黄片免| 亚洲av免费高清在线观看| 久久精品91蜜桃| 亚洲av免费高清在线观看| 精品国产亚洲在线| 给我免费播放毛片高清在线观看| 永久网站在线| 男人的好看免费观看在线视频| 一级黄色大片毛片| 18禁裸乳无遮挡免费网站照片| 在线观看免费视频日本深夜| 在线观看午夜福利视频| 九九在线视频观看精品| 十八禁人妻一区二区| 日韩人妻高清精品专区| 精品日产1卡2卡| 一二三四社区在线视频社区8| 国产伦一二天堂av在线观看| 桃红色精品国产亚洲av| 国产野战对白在线观看| 国产综合懂色| 国内毛片毛片毛片毛片毛片| 在线天堂最新版资源| 免费在线观看成人毛片| 亚洲av.av天堂| 在线播放无遮挡| 中国美女看黄片| 此物有八面人人有两片| 国产精品久久电影中文字幕| 国产黄a三级三级三级人| 欧美日韩瑟瑟在线播放| 成人av在线播放网站| 国产一区二区在线观看日韩| 日日夜夜操网爽| 欧美在线一区亚洲| 午夜福利高清视频| 亚洲国产精品久久男人天堂| 欧美性猛交黑人性爽| 国产精品1区2区在线观看.| 亚洲人成电影免费在线| 亚洲美女视频黄频| 亚洲中文日韩欧美视频| 两个人视频免费观看高清| 婷婷精品国产亚洲av| 性插视频无遮挡在线免费观看| 婷婷丁香在线五月| 亚洲成人免费电影在线观看| 欧美成人a在线观看| 麻豆成人av在线观看| a在线观看视频网站| 日韩中文字幕欧美一区二区| 69av精品久久久久久| 国产白丝娇喘喷水9色精品| 啪啪无遮挡十八禁网站| 伦理电影大哥的女人| 免费人成视频x8x8入口观看| 久久国产精品影院| 午夜福利视频1000在线观看| 身体一侧抽搐| 亚洲人与动物交配视频| 村上凉子中文字幕在线| 亚洲久久久久久中文字幕| 宅男免费午夜| 国产精品电影一区二区三区| 免费在线观看亚洲国产| 麻豆成人午夜福利视频| 不卡一级毛片| 熟女人妻精品中文字幕| 亚洲美女黄片视频| 精品99又大又爽又粗少妇毛片 | 麻豆久久精品国产亚洲av| 日韩亚洲欧美综合| 国产乱人视频| 美女高潮的动态| 亚洲成人中文字幕在线播放| 亚洲精品乱码久久久v下载方式| 色吧在线观看| 欧美潮喷喷水| 我要看日韩黄色一级片| 欧美乱色亚洲激情| 亚洲av熟女| 久久国产精品影院| 久久午夜亚洲精品久久| 大型黄色视频在线免费观看| 热99re8久久精品国产| 午夜免费成人在线视频| 蜜桃亚洲精品一区二区三区| 国产伦精品一区二区三区视频9| 国产精品永久免费网站| 亚洲熟妇中文字幕五十中出| 麻豆一二三区av精品| av在线天堂中文字幕| 亚洲国产精品合色在线| 亚洲精品影视一区二区三区av| 不卡一级毛片| 热99re8久久精品国产| 精华霜和精华液先用哪个| 亚洲精品乱码久久久v下载方式| 国产一区二区亚洲精品在线观看| 国产老妇女一区| 免费看日本二区| 久久久久久久午夜电影| 在线观看免费视频日本深夜| 中出人妻视频一区二区| 国产精品日韩av在线免费观看| 久久香蕉精品热| 精品日产1卡2卡| 久久久精品欧美日韩精品| 国内精品美女久久久久久| 欧美中文日本在线观看视频| 国产一区二区亚洲精品在线观看| 九九在线视频观看精品| 午夜福利成人在线免费观看| 嫩草影院精品99| 1000部很黄的大片| 丰满人妻熟妇乱又伦精品不卡| 日本免费a在线| 成人毛片a级毛片在线播放| 午夜久久久久精精品| 国产高清有码在线观看视频| 国产精品影院久久| 中文字幕久久专区|