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下列关于Windows 2003系统DHCP服务器的描述中，错误的是（ ）。
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To absorb a younger work force, many companies offered retirement plans as incentives for older workers to retire and make way for the younger ones who earned lower salaries.
阅读材料，回答题。 Deport them or notIn a country that defines itself by ideals，not by shared blood，who should be allowed to come，work and live here?In the wake of the Sept．1 1 attacks these questions have never seemed more pressing．On Dec．11，2001，as part of the effort to increase homeland security，federal and local authorities in 14 states staged“Operation Safe Travel”-raids on airports to arrest employees with false identification(身份证明)．In Salt Lake City there were 69 arrests．But those captured were anything but terrorists，most of themillegal immigrants from Central or South America．Authorities said the undocumented workers’illegal status made them open to blackmail(讹诈)by terrorists．Many immigrants in Salt Lake City were angered by the arrests and said they felt as if they were being treated like disposable goods．Mayor Anderson said those feelings were justified to a certain extent，“We’re saying we want you to work in these places，we’re going to look the other way in terms of what our laws are，and then when it’s convenient for us，or when we can try to make a point in terms of national security，especially after Sept．1 1，then you’re disposable．There are whole families being uprooted for all of the wrong reasons，”Anderson said．If Sept．1 1 had never happened．the airport workers would not have been arrested and could have gone oil quietly living in America．probably indefinitely．Ana Castr0，a manager at a Ben＆Jerry’s ice cream shop at the airport，had been workin9 10 years with the same false Social Security card when she was arrested in the December airport raid．Now she and her family are living under the threat of deportation(驱逐出境)．Castro’s case is currently waiting to be settled．While she awaits the outcome，the government has granted her permission to work here and she has returned to her job at Ben&Jerry’s．According to the author，the United States claims to be a nation__________．
(题共用题干)患者，男性，68岁，风湿性心脏瓣膜病，二尖辫狭窄10余年。3天前受凉后出现咳嗽，咯黄色黏痰，伴发热，体温最高为38．3℃，伴胸闷、心悸气短，上5层楼梯需中间休息5分钟，自服感冒药后未见改善，急诊以“风湿性心脏瓣膜病、心衰、肺部感染”收入院。引起该患者发生心衰的基本病因是
现有3个箱子，依次放入1、2、3个球，然后将3个箱子随机编号为甲、乙、丙，接着在甲、乙、丙3个箱子里分别放入其箱内球数的2、3、4倍。两次共放了22个球。最终甲箱中球比乙箱：
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