首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   26492篇
  免费   1540篇
各国政治   1054篇
工人农民   985篇
世界政治   2162篇
外交国际关系   821篇
法律   17307篇
中国共产党   3篇
中国政治   153篇
政治理论   5305篇
综合类   242篇
  2020年   500篇
  2019年   545篇
  2018年   655篇
  2017年   759篇
  2016年   804篇
  2015年   646篇
  2014年   693篇
  2013年   2682篇
  2012年   634篇
  2011年   735篇
  2010年   798篇
  2009年   785篇
  2008年   676篇
  2007年   676篇
  2006年   718篇
  2005年   600篇
  2004年   578篇
  2003年   606篇
  2002年   552篇
  2001年   1006篇
  2000年   883篇
  1999年   730篇
  1998年   409篇
  1997年   349篇
  1996年   297篇
  1995年   321篇
  1994年   372篇
  1993年   320篇
  1992年   503篇
  1991年   542篇
  1990年   483篇
  1989年   527篇
  1988年   471篇
  1987年   463篇
  1986年   485篇
  1985年   479篇
  1984年   432篇
  1983年   442篇
  1982年   345篇
  1981年   329篇
  1980年   273篇
  1979年   367篇
  1978年   236篇
  1977年   211篇
  1976年   187篇
  1975年   173篇
  1974年   197篇
  1973年   172篇
  1972年   155篇
  1971年   143篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
131.
China's experiments with democracy in this century were few in number, short in duration, and limited in their democratic characteristics. Democratic institutions malfunctioned in numerous ways. Nine sets of causes for the failure of Chinese democracy can be suggested: ideology, internal and external war, military intervention, Chinese political culture, underdevelopment, a peasant mass, flaws in the design of Chinese constitutions, moral failures by democratic politicians, or the lack of transactional benefits for military‐based elites in the process of democratic transition. Each of these factors is reviewed critically with an eye to its possible lessons.  相似文献   
132.
133.
A 22-year-old Korean soldier, who had received blows to the neck and epigastrium from an officer 10 h earlier, suddenly died after massive hematemesis. He had been in relatively good health except for episodes of blood-tinged vomiting approximately 5 and 7 months prior to this event. Postmortem examination revealed angiodysplasia involving the gastroesophageal junction, and the stomach was distended with blood. No abnormal findings were present around the whole viscera, and the duodenum was free of blood. The pathologic significance of upper gastrointestinal angiodysplasia as a potential source of bleeding and a chronologic correlation between the trauma and bleeding are discussed.  相似文献   
134.
135.
European Journal of Law and Economics - In this article I try to find answers for three questions: Which functions are exercised by the Court of Audit in the Netherlands, and what kinds of...  相似文献   
136.
The primary aim of this paper is to review the literature on preadolescent friendships in order to examine the relationship between preadolescent friendships and social support in adulthood. Social supports are important to health, both directly and as a stress buffer. Few studies, however, have specifically examined adult social supports from the perspective of their developmental precursors and critical developmental periods. Some data indicate that the preadolescent period may be of particular importance to the development of adult social skills and ties. Observational and empirical studies of preadolescent peer relationships, and in particular best friendships, suggest unique and critical contributions to adult social relatedness. Present research is suggestive but is insufficient to validate preadolescence as a critical period in adult social relatedness. Our review has implications for better understanding the mechanisms by which preadolescent friendships effect adult social support—an important mediator of the effects of stress on health. Further longitudinal study is needed.Received Ph.D. from University of Maryland. Research interests are social supports and psychological responses to trauma and disaster.Received M.D. from Yale University. Research interests are social supports and traumatic stress.  相似文献   
137.
138.
Presented in this paper are the initial results involving the use of the nose or outer ear as temperature measurement sites to determine the postmortem period of the human corpse. Simple mathematical models for both sites are developed based on cooling curves of five corpses. Analysis of errors between actual and calculated postmortem intervals suggest that in its present form, the described methods would not be suitable for use in accurately determining the time since death of human corpses.  相似文献   
139.
140.
Proposals to ration health care in the United States meet a number of objections, symbolic and literal. Nonetheless, an acceptance of the idea of rationing is a necessary first step toward universal health insurance. It must be understood that universal health care requires an acceptance of rationing, and that such an acceptance must precede enactment of a program, if it is to be economically sound and politically feasible. Commentators have argued that reform of the health care system should come before any effort to ration. On the contrary, rationing and reform cannot be separated. The former is the key to the latter, just as rationing is the key to universal health insurance.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号