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   19979篇
  免费   697篇
  国内免费   5篇
各国政治   870篇
工人农民   808篇
世界政治   1476篇
外交国际关系   748篇
法律   12112篇
中国共产党   6篇
中国政治   171篇
政治理论   4286篇
综合类   204篇
  2020年   258篇
  2019年   317篇
  2018年   413篇
  2017年   487篇
  2016年   513篇
  2015年   369篇
  2014年   366篇
  2013年   2045篇
  2012年   552篇
  2011年   560篇
  2010年   492篇
  2009年   520篇
  2008年   598篇
  2007年   648篇
  2006年   628篇
  2005年   573篇
  2004年   555篇
  2003年   581篇
  2002年   525篇
  2001年   728篇
  2000年   622篇
  1999年   540篇
  1998年   333篇
  1997年   235篇
  1996年   235篇
  1995年   230篇
  1994年   254篇
  1993年   255篇
  1992年   387篇
  1991年   402篇
  1990年   386篇
  1989年   338篇
  1988年   374篇
  1987年   342篇
  1986年   371篇
  1985年   350篇
  1984年   284篇
  1983年   262篇
  1982年   224篇
  1981年   239篇
  1980年   161篇
  1979年   211篇
  1978年   158篇
  1977年   138篇
  1976年   119篇
  1975年   143篇
  1974年   153篇
  1973年   123篇
  1972年   114篇
  1969年   111篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
HOLDING: In the accelerating rush to judgment that occurred here, a series of legal errors and missteps following a preliminary hearing compounded what was already an excruciatingly difficult and complex situation. The record strongly suggests that no one involved in the protective proceeding had ever communicated directly with baby AMB's parents and only the testifying doctor had ever seen AMB, an infant with life-threatening disabilities. Thus, a duly enacted statutory process designed to protect individual rights, to allow the intelligent exercise of these rights, and to assure balanced and considered decision making became, instead, the opposite. There was such a relentless disregard for basic principles of law that in its opinion, the Michigan Court of Appeals attempted to assure that this tragedy is never repeated in that state.  相似文献   
973.
974.
975.
976.
977.
978.
The conflicting outcome of the electoral and popular votes inthe 2000 presidential election provoked calls to abolish oralter the electoral college. One prominent criticism is thatthe institution distorts election outcomes by providing disproportionateinfluence to small states. If each state receives a number ofpresidential electors equal to that states' number of membersin the U.S. House of Representatives plus the two senators,then the "federalism bonus" represents the two electoral collegevotes that correspond to the position of each state as an equalentity in the Senate. This research examines how the "federalismbonus" influences presidential selection by addressing threequestions. First, why did the framers include a federal componentin the electoral college? Second, under what circumstances hasthe "federalism bonus" played a role in presidential selection?Third, how would the various alternatives for reform affectthe federal component of the electoral college, and what isthe likelihood of adoption for each?  相似文献   
979.
A weary Shepherd     
Kaiser RB  Noonan D 《Newsweek》2002,139(14):32
  相似文献   
980.
The concentrations of antimony, copper, tin, arsenic, silver, bismuth, and cadmium in lead alloys produced by two smelters and one ammunition manufacturer were determined using inductively coupled plasma-atomic emission spectrometry. These element concentrations were used to measure the variations in composition of lead products that result from various processes involved in the manufacture of lead projectiles. In general, when a pot containing molten lead is used to cast a number of objects, these objects are similar, although not necessarily analytically indistinguishable in their elemental compositions. In each subsequent step in the processing of lead at the smelter and at the ammunition manufacturer, the size of an individual homogeneous melt of lead decreases as more distinct compositions are formed as a result of remelting and mixing of sources, including lead scrap. The ammunition manufacturer in this study produced at least 10 compositionally distinguishable groups of bullet wire in a 19.7-h period. The largest group could potentially be used to produce a maximum of 1.3 million compositionally indistinguishable 40 grain bullets.  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