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注册会计师张怡在对被审计单位华清公司进行相关的审计抽样中遇到下列问题，请代为做出正确的判断。 注册会计师在控制测试中运用非统计抽样时，下列有关评价样本结果的说法中错误的是( )。
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注册会计师张怡在对被审计单位华清公司进行相关的审计抽样中遇到下列问题，请代为做出正确的判断。 注册会计师在进行样本选取时，如果发现总体特征的分布呈随机分布，则采用的选取样本的基本方法是( )。
(每小题只有一个正确答案，请从每小题的备选答案中选出一个你认为正确的答案)甲公司是非上市公司，由X会计师事务所负责对甲公司2007年度财务报表进行审计，A注册会计师担任项目负责人。在考虑执业过程中有关职业道德规范的相关问题时，A注册会计师遇到以下事项，请代为做出正确的专业判断。 下列选项中，属于是自我评价威胁影响独立性，并且存在有效防范措施的是( )。
The girls in this sixth grade class in East Palo Alto, California, all have the same access to computers as boys. But researchers say, by the time they get to high school, they are victims of what the researchers call a major new gender (性别) gap in technology. Janice Weinman of the American Association of University Women says, "Girls tend to be less comfortable than boys with the computer. They use it more for word processing rather than for problem solving, rather than to discover new ways in which to understand information." After re-examining a thousand studies, the American Association of University Women researchers found that girls make up only a small percentage of students in computer science classes. Girls consistently rate themselves significantly lower than boys in their ability and confidence in using computers. And they use computers less often than boys outside the classroom. An instructor of a computer lab says he’’s already noticed some differences. Charles Cheadle of Cesar Chavez School says, "Boys are not so afraid they might do something that will harm the computer, whereas girls are afraid they might break it somehow." Six years ago, the software company Purple Moon noticed that girls’’ computer usage was falling behind boys. Karen Gould says, "The number one reason girls told us they don’’t like computer games is not that they’’re too violent, or too competitive. Girls just said they’’re incredibly boring." Purple Monn says it found what girls want, characters they can relate to and story lines relative to what’’s going on in their own lives. Karen Gould of Purple Moon Software says, "What we definitely found from girls is that there is no intrinsic (固有的) reason why they wouldn’’t want to play on a computer; it was just a content thing." The sponsor of the study says it all boils down to this: the technology gender gap that separates the girls from the boys must be closed if women are to compete effectively with men in the 21st century. The gender gap needs to be closed because______.
实验室观察某疗法对移植性肿瘤的疗效，以生存日数作为分析指标，实验组观察 10例，秩次和为170；对照组观察12例，秩次和为83。欲比较两组生存日数有无差别，进行秩和检验。 编秩次时，若遇实测值相同，但分别位于两组，则应
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