题目内容
沃尔评分法中的相对比率都等于实际数除以标准数。
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产权比率为4／5，则权益乘数为5／4。
企业应收账款的账龄越长，发生坏账的可能性越大。
根据我国《公证法》的规定，公证书的生效时间是（）
Questions 63 to 66 are based on the following passage:The Intel Science Talent Search, the most prestigious high school science contest in the nation, was launched to identify young scientific talent, and it has been doing so with remarkable precision since 1941. Every year, approximately 1,700 students from around the country polish off projects they have been working on for as long as two years, and send in a report to the contest officials. Simply entering the contest is an impressive achievement for a high school junior. It means that the student has spent hundreds of hours probing a scientific question or testing a theory about which he has written a scientific paper of near-professional quality. The top 300 students become semifinals, and from this group, 40 are selected to bring their projects to Washington. Ten projects are then selected as the best in the final round of judging. The 40 finalists get at least $7,500 for their efforts, and the top student receives a $100,000 scholarship. Most of the winners, from semifinals up, are guaranteed admission to the college of their choice.From the start, this contest was different from traditional science fairs. Its goal was not simply to choose the best project but to locate the best potential scientists. The distinction is an important one. The contest has a number of features that test the mettle of the students as well as the projects. It endeavors to explore the nimbleness and originality of the minds behind the projects, rather than just rewarding the boldness of the experiment. The contest’s underlying philosophy is that students discover their scientific talents by working on science, not by listening to lectures in a classroom. From the context we may figure out that the expression “polish off” in line 4 of paragraph 1 most probably means（）.
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