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162名宫颈癌患者随访资料整理为组距为1年的频数表，估计生存率时宜采用
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下表资料为8名健康人和8名矽肺患者的血清粘蛋白量(mg/dl)，假设呈正态分布，且方差齐性。 健康人 35 21 16 26 24 42 18 25 矽肺患者 65 73 73 30 73 56 73 54 该资料属于何种类型
The Organization for Economic Co-operation and Development (OECD) conservatively estimates that, by 2005, worldwide electronic, computer-dependent commerce will grow from its current $30 billion annually to approximately $1 trillion every year . 61) Growth in electronic commerce is not a straight line trend—it comes slowly at first, then accelerates rapidly. For example, an innovation at one Internet site may create a base that leads to the development of many other sites. The OECD timber estimates that, of this commerce,80 percent will be business-to-business, though the retail share will clearly be worth capturing — 20 percent of $1 trillion is no small figure.It is easy to forget that the Worldwide Web did not exist before 1991 and was not commercialized until 1994. 62) Nonetheless, although it may take six years to reach sales of $1 trillion, it won’ t take six more to reach $2 trillion, nor perhaps even two to expand from 2 to 4 trillion dollars. One reason for this acceleration will be the growth in computer ownership. According to one projection, by 2005,70 percent of American households will have a computer—a figure that may well be closer to 98 percent because computers will be free to customers who sign up intemet service as part of the manufacturer’s package.63) Electronic commerce will turn the world into one giant shopping mall for products, services. and investments. One obvious effect will be the creation of geographically mobile capital, but even more un portantly, e-commerce will make a global marketplace for labor services, and thus the practical equivalent of worldwide labor mobility. People will be able to live in one nation and earn income in another.64) By 2005,more than half of the average employee’s working hours in advanced countries( like the United States and the United Kingdom)will be spent at home. In occupations where physical contact is important — selling, for example—businesses will end to locate closer to where employees want to live rather than making them commute. In fact, businesses will have to pay a high premium to attract commuters because labor markets will be tight—as they already are in America and England and as they may eventually become in continental Europe. 65) Employees will be, figuratively speaking, in the driver’s seat. As a result, large cities will increasingly be surrounded by full-service communities. The cities will not die, but jobs, entertainment, and the like will move to the suburbs that have been quickly expanding around them. Electronic commerce will turn the world into one giant shopping mall for products, services. and investments.
甲公司系国有企业，由于经营管理不善，于1996年3月18日被债权人申请破产。3月24日人民法院受理了此案，并将立案情况通知了甲公司。5月14日，甲公司的上级主管单位申请对甲公司进行整顿。7月2日，甲公司与债权人达成了和解协议，7月10日人民法院发布公告，中止破产程序。整顿期间，债权人发现甲公司不但经营状况没有好转，反而又欠了一笔新债，于是债权人又向人民法院申请甲公司破产，法院裁定后于1997年 10月21日宣告甲公司破产。1997年11月30日，破产程序终结。1997年12月底，人民法院在审理其他案件时发现，1997年11月，甲公司曾放弃对某医院的20万元债权，条件是甲公司职工在该医院治疗时享有优惠，于是人民法院依法追回了20万元财产。 甲公司放弃的20万元债权______。
抗菌增效剂，其抗菌谱与磺胺药相似（）。
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