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针面间的作用分为哪几类？棉纺机上何处为分梳作用，何处为剥取作用？各起什么作用？
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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?
FIDIC合同中，工程师由（）任命，履行合同中指派的职责和权利。
（），中央办公厅发出《关于为“档案工作中反党反社会主义黑线”等错案彻底平反的通知》。
永久磁铁和电磁铁的区别在哪里？
地老虎的化学防治方法有（）。
男性，56岁，既往有乙型肝炎病史，本次因食管胃底静脉曲张破裂出血而入院。肝功能为Child-PughC级，大量腹水。有关控制或减少腹水形成的措施中错误的是（）
图示圆弧曲梁MK（内侧受拉为正）影响线在C点的竖标为：（）
重症妊娠剧吐的临床表现有（）
配电网自愈是解决“供电不间断”的问题，能够（）。
（）指人与人通过直接交往（包括沟通和其他各种形式的交流）过程发展起来的较为稳定的倾向性情感联系。