更多“根据加涅的学习结果分类，学习者使用符号与环境相互作用的能力称”相关的问题
某企业生产一批零件，随机重复抽取400只做使用寿命试验。测试结果平均寿命为5000小时，样本标准差为300小时，400只中发现10只不合格。根据以上资料计算平均数的抽样平均误差和成数的抽样平均误差。
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There is one difference between the sexes on which virtually every expert and study agree: men are more aggressive than women. It shows up in 2-year-olds. It continues through school days and persists into adulthood. It is even constant across cultures. And there is little doubt that it is rooted in biology in the male sex hormone testosterone.If there"s a feminine trait that"s the counterpart of male aggressiveness, it"s what social scientists awkwardly refer to as "nurturance". Feminists have argued that the nurturing nature of women is not biological in origin, but rather has been drummed into women by a society that wanted to keep them in the home. But the signs that it is at least partly inborn are too numerous to ignore. Just as tiny infant girls respond more readily to human faces, female toddlers learn much faster than males how to pick up nonverbal cues from others. And grown women are far more adept than men at interpreting facial expressions: A recent study by University of Pennsylvania brain researcher Ru-ben Gur showed that they easily read emotions such as anger, sadness and fear. The only such e-motion men could pick up was disgust.What difference do such differences make in the real world Among other things, women appear to be somewhat less competitive—or at least competitive in different ways—than men. At the Harvard Law School, for instance, female students enter with credentials just as outstanding as those of their male peers. But they don"t qualify for the prestigious Law Review in proportionate numbers, a fact some school officials attribute to women"s discomfort in the incredibly competitive atmosphere.Students of management styles have found fewer differences than they expected between men and women who reach leadership positions, perhaps because many successful women deliberately imitate masculine ways. But an analysis by Purdue social psychologist Alice Eagly of 166 studies of leadership style did find one consistent difference: Men tend to be more "autocratic"—making decisions on their own—while women tend to consult colleagues and subordinates more often. Studies of behavior in small groups turn up even more differences. Men will typically dominate the discussion, says University of Toronto psychologist Kenneth Dion, spending more time talking and less time listening.
A．how sex differences are demonstrated in social relationsB．how hormone determines sex differencesC．why there are differences between males and femalesD．why men and women have different social roles
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jgj133-2013中规定，建筑幕墙本身一般不具有特别的防火能力，但作为建筑的（），是建筑整体的一部分，在一些重要的部位应具有一定的（），并且应与建筑的整体防火要求相适应。
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关于接地线设计正确的说法是（）。
A . A、接地线可以从户外架空引入，但必须全程注意多选择接地点可靠连接；
B . B、接地线不宜与信号线平行走线或相互缠绕；
C . C、接地线应选用铜芯导线，如无条件可使用铝材；
D . D、保护地线应选用黄绿双色相间的塑料绝缘铜芯导线；
E . E、保护地线上严禁接头，严禁加装熔断器或开关；
F . F、接地端子必须经过防腐、防锈处理，其连接应牢固可靠；
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下列风险影响因素中，属于房地产项目的外部风险的是()
A、政策突变B、管理失控C、规划调整D、市场疲软E、金融危机此题为多项选择题。
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“四个全面”战略布局中，哪几个是三大战略举措?
“四个全面”战略布局中，哪几个是三大战略举措?
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假设某国经济的生产函数为Cobb-Douglas函数形式，其中劳动报酬的份额为0.7，资本的份额为0.3。如果资本存量增长率等于1%，劳动力增长率为2%，全要素生产率增长率为1.2%，实际产出的增长率为（）。
A.1.2%
B.1.4%
C.2.6%
D.2.9%
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随机误差分布概率正确的是_____________________。
A. δ = ± σ ，P=68.26% B. δ =±2 σ ，P=95.44% C. δ =±3 σ ，P=100% D. 以上都对
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切断电缆后未进行电缆附件安装的电缆，要进行（）处理。
A . 矫直；
B . 防水防潮；
C . 防火；
D . 防毒。
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化学鉴别法必须具备的特点是（）
A．反应迅速
B．现象明显
C．反应完全
D．专属性强
E．再现性好
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根据《水利水电工程施工质量检验与评定规程》SL176-2007，工程质量检验的计量器具需经( )级以上人民政府技术监督部门认定的计量检定机构或其授权设置的计量检定机构进行检定，并具备有效的检定证书。
A.乡 B.县 C.地区 D.省
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2型糖尿病患者最常见的死因是（)
A.感染
B.低血糖
C.糖尿病肾病
D.心脑血管意外
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谥号是古代对死去的帝王、大臣、贵族，按其生平事迹和品德给予褒贬的称号。()
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单位结算卡挂失解挂不输密码时需要（）授权。
A.3+0 B.2+0 C.1+0 D.无需授权
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