搜题请搜索小程序“爱下问搜题”
问题 问答题

某测验共6道题，50名被试在该测验的各题得分的方差是，0.75,0.81,0.79,0.83,0.85,0.77.被试总分的方差是16.00. 以此回答下列问题

求该测验a系数

答案

参考答案：

单项选择题

Modern liberal opinion is sensitive to problems of restriction of freedom and abuse of power. (1) , many hold that a man can be injured only by violating his will, but this view is much too (2) . It fails to (3) the great dangers we shall face in the (4) of biomedical technology that stems from an excess of freedom, from the unrestrained (5) of will. In my view, our greatest problems will be voluntary self-degradation, or willing dehumanization, as is the unintended yet often inescapable consequence of sternly and successfully pursuing our humanization (6) .

Certain (7) and perfected medical technologies have already had some dehumanizing consequences. Improved methods of resuscitation have made (8) heroic effort to "save" the severely ill and injured. Yet these efforts are sometimes only partly successful: They may succeed in (9) individuals, but these individuals may have sever brain damage and be capable of only a less-than-human, vegetating (10) . Such patients have been (11) a death with dignity. Families are forced to bear the burden of a (12) "death watch".

(13) the ordinary methods of treating disease and prolonging life have changed the (14) in which men die. Fewer and fewer people die in the familiar surroundings of home or in the (15) of family and friends. This loneliness, (16) , is not confined to the dying patient in the hospital bed. As a group, the elderly are the most alienated members of our society: Not yet (17) the world of the dead, not deemed fit for the world of the living, they are shunted (18) . We have learned how to increase their years, (19) we have not learned how to help them enjoy their days. Yet we continue to bravely and feverishly push back the frontiers (20) death.

19（）

A.except

B.so

C.or

D.but
查看答案
单项选择题

以下各项描述正确的是（）

A、小肠疾病疼痛常在脐周，便后疼痛常可缓解

B、结核疾病腹疼痛在下腹，便后疼痛不缓解

C、分泌性腹泻往往无明显腹痛

D、阿米巴痢疾常有黏液血便或黏液脓血便

E、细菌性痢疾常呈暗红色或果酱样
查看答案