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下述参数中哪项对瓣膜损害程度评估不大（）
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科学的质量管理方法，对于提高发行质量和服务质量起促进作用
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在Excel里，下列有关公式的引用叙述错误的有：（）。
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慢性化脓性中耳炎的临床特点是（）。
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放射治疗计划的主要执行者是（）
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在GPRS/EDGE数据传输过程中，终端的IP地址动态分配功能在下列哪个设备中完成：（）
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连珠电影
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根据以下材料回答题： Age DiscriminationBy the year 2000 nearly half the workforce in Europe are over 40 and yet throughout Europe there is a deep ambivalence ( 犹豫 )-if not outright suspicion-towards the capabilities of older workers.Those over the age of 40 generally take longer to find new employment, but European governments have done little to protect their employment rights. Only Germany, with incentives to business to encourage the employment of older people, and France, with the introduction of legislation making it illegal to use age barriers in recruitment-or to make employees redundant because of their age done anything substantive to combat age discrimination.Yet even in these two countries, there has been no noticeable improvement in the lot of the older workers; indeed, in France, job advertisements flout ( 轻视，反对 ) the law openly by asking for applicants of a certain age. So, should France and Germany be tightening up their laws and should the rest of Europe follow suit?Bill Robbins, a careers consultant said, "Legislation against age discrimination has been in existence for well over ten year in the U.S. and Canada, but has had no effect. Employers will always be able to find some reasons for turning down an older applicant without appearing to break the law."Ironically, it was governments which played a leading role in hardening business culture against older workers in the first place. In the late 1970s, many European countries were extremely concerned about the levels of youth unemployment, and France, Germany and Belgium even initiated incentive schemes for businesses to encourage older employees to take early retirement provided that younger trainees were taken on in their place. As more and more employees took early retirement, often willingly, a new, youth-oriented culture permeated business throughout most of Europe-even in those countries that had taken no active measures to promote it.Demographic ( 人口统计学的 ) trends mean that governments are now anxious to slow down the policy of early retirement as they realize that they simply do not have the funds to meet their pension promises. But reversing business attitudes is no easy matter. Dianah Worman a policy adviser said, "There is a widely held belief that older people are less, adaptable and trainable. This is just not true: research has shown that differences in capability are as wide within age groups as they are between them."Which of the following words can best describe the European attitude to older workers?
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男性，25岁。因活动后气急3年就医。体检：患者轻度紫绀，左背部肩胛间区近肩胛下角处闻及收缩期杂音。胸片及分层片示左肺下叶背段团块影，略显分叶，透视下有搏动（）
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采煤工作面应采取煤层注水，孔隙率小于（）的煤层除外。