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当前学科：IP基本原理
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调制解调器通常分为（）和（）两大类。
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对于偷税违法行为，处罚的追溯时效是（）
下令执行“乌台诗案”的皇帝是（）。
下列形式的成本一般可以归属于无关成本的有()。
维生素K的主要作用是
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__________．
临床上支气管哮喘和心绞痛的发作易在快波睡眠期出现()
电烧伤（电击伤）是指电流通过人体，由电能转变来的热能而引起人体不同程度的组织损害。其严重性在于即时引起（）、（）停止，如抢救不及时往往在短期内导致死亡。
法约尔设计了一种把等级制度与横向信息沟通结合起来的跳板，即（）。
保证人为银行承兑汇票进行保证事项，如果保证人为出票人保证的，应将保证事项记载在票据的（）。
工单的生命周期可以划分为（）等阶段。