全文获取类型
收费全文 | 33573篇 |
免费 | 1412篇 |
专业分类
各国政治 | 1359篇 |
工人农民 | 2037篇 |
世界政治 | 2119篇 |
外交国际关系 | 1110篇 |
法律 | 21457篇 |
中国共产党 | 2篇 |
中国政治 | 152篇 |
政治理论 | 6622篇 |
综合类 | 127篇 |
出版年
2021年 | 167篇 |
2020年 | 521篇 |
2019年 | 585篇 |
2018年 | 1902篇 |
2017年 | 1893篇 |
2016年 | 1806篇 |
2015年 | 734篇 |
2014年 | 742篇 |
2013年 | 2717篇 |
2012年 | 840篇 |
2011年 | 1588篇 |
2010年 | 1610篇 |
2009年 | 1261篇 |
2008年 | 1411篇 |
2007年 | 1343篇 |
2006年 | 755篇 |
2005年 | 711篇 |
2004年 | 820篇 |
2003年 | 700篇 |
2002年 | 644篇 |
2001年 | 1014篇 |
2000年 | 931篇 |
1999年 | 704篇 |
1998年 | 404篇 |
1997年 | 321篇 |
1996年 | 317篇 |
1995年 | 313篇 |
1994年 | 316篇 |
1993年 | 297篇 |
1992年 | 466篇 |
1991年 | 480篇 |
1990年 | 462篇 |
1989年 | 454篇 |
1988年 | 469篇 |
1987年 | 420篇 |
1986年 | 490篇 |
1985年 | 476篇 |
1984年 | 387篇 |
1983年 | 365篇 |
1982年 | 272篇 |
1981年 | 258篇 |
1980年 | 214篇 |
1979年 | 328篇 |
1978年 | 188篇 |
1977年 | 167篇 |
1976年 | 136篇 |
1975年 | 130篇 |
1974年 | 185篇 |
1973年 | 139篇 |
1972年 | 132篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
On the basis of the uncertainty management model, we argue here that when people are uncertain about an organization's trustworthiness, they may resolve the question how they should react toward the organization by relying on their perceptions of the organization's procedures. As a consequence, we predicted that the reactions of parents whose child was in a day care center would be strongly influenced by their perceptions of the procedures used by the organization that was responsible for their children's day care when the parents would be uncertain about the organization's trustworthiness. However, when parents would be certain that the organization could be trusted they would be less in need of procedural information, yielding less strong effects of perceived procedure on parents' reactions. The findings of a survey study corroborate this line of reasoning. In the discussion it is argued that these findings suggest that people especially rely on their perceptions of procedures when they are uncertain about important aspects of their lives, such as the trustworthiness of organizations that are responsible for their children's day care. 相似文献
102.
103.
104.
Correlation between plasma and bone marrow tricyclic antidepressants has not been studied before. Two groups of rabbits were given 10 and 20 mg of desipramine/kg body weight, respectively. Desipramine was administered to the animals once daily by mouth for 5 days. On the fifth day the animals were sacrificed and blood and bone marrow samples were collected and analyzed using a high performance liquid chromatographic (HPLC) method. Data showed that a correlation exists between bone marrow and blood desipramine. The bone marrow desipramine concentration increased as its blood levels increased. The average ratio of bone marrow to blood desipramine +/- S.D. (standard deviation) in both dosage groups was 37.2 +/- 4.46 with a range of 30.99-44.82. This investigation is promising and shows that bone marrow could be used as an alternative tissue in the absence of a suitable blood sample. 相似文献
105.
106.
Carol S. Bruch 《Family Court Review》1993,31(1):101-107
This article examines voluntary mediation and provides suggested criteria for attorneys in deciding whether or not to use mediation. The author discusses what mediation has to offer, what it takes to make it work, and important cautions for attorneys in deciding about the use of this process. 相似文献
107.
108.
Comparison of a suspected biter's dental arches with the patterned injury of a bite mark is especially difficult when the bite occurs in an anatomic location with a small radius of curvature or with complex or compound curves. The authors present two case reports in which human skin was used as a template for the reproduction of a bite. In one case the victim's skin was used; in the other, the skin of a anatomically similar person was used. The use of inked dental casts, photography, and transparent overlays significantly reduced the errors common to analysis of bite marks in these highly curved areas. 相似文献
109.
Identification of the driver in two-rider motorcycle accidents. Inguinal contusion-laceration as an indication of the driver 总被引:1,自引:0,他引:1
H Shiono A Akane K Matsubara K Tanabe S Takahashi 《The American journal of forensic medicine and pathology》1990,11(3):190-192
In motorcycle accidents involving two riders, medicolegal identification of the driver is necessary when one or both riders die. It is particularly important in the latter case, because the survivor almost always insists that he or she was not driving. One characteristic injury that distinguishes the driver from the passenger is inguinal contusion-laceration (accompanied internally by pelvic fracture). This injury, caused by collision of the pelvis with the fuel tank, identifies the driver. 相似文献
110.