题目内容
某磁盘盘组共有10个盘面，每个盘面上有100个磁道，每个磁道有32个扇区，假定物理块的大小为2个扇区，分配以物理块为单位。若使用位示图管理磁盘空间，则位示图需要占用______B空间。若采用空白文件管理磁盘空间，且空白文件目录的每个表项占用5B，则当空白文件数目大于______时，空白文件目录占用的字节数大于位示图占用的字节数。 下列关于索引表的叙述中，正确的是______。
查看答案
搜索结果不匹配？点我反馈
更多问题
某磁盘盘组共有10个盘面，每个盘面上有100个磁道，每个磁道有32个扇区，假定物理块的大小为2个扇区，分配以物理块为单位。若使用位示图管理磁盘空间，则位示图需要占用______B空间。若采用空白文件管理磁盘空间，且空白文件目录的每个表项占用5B，则当空白文件数目大于______时，空白文件目录占用的字节数大于位示图占用的字节数。 下列文件物理结构中，适合随机访问且易于文件扩展的是______。
混凝土坝、水闸和水电站厂房等建筑物的扬压力，应按______作用于计算截面全部截面积上的分布力计算。
金融时报指数分为三种，每一种都由一定数量的股票组成，以下数字中不属于金融时报指数构成数量的数字是 。
In October 2002, Goldman Sachs and Deutsche Bank 1 a new electronic market (www.gs.com/econderivs/) for economic indices that 2 substantial economic risks, such as nonfarm payroll ( a measure of job availability) and retail sales. This new market was made possible by a 3 rating technology, developed by Longitude, a New York company providing software for financial markets, 4 the Parimutuel Digital Call Auction. This is "digital" 5 of a digital option : ie, it pays out only if an underlying index lies in a narrow, discrete range. In effect, Longitude has created a horse race, where each "horse" wins if and 6 the specified index falls in a specified range. By creating horses for every possible 7 of the index, and allowing people to bet 8 any number of runners, the company has produced a liquid integrated electronic market for a wide array of options on economic indices.Ten years ago it was 9 impossible to make use of electronic information about home values. Now, mortgage lenders have online automated valuation models that allow them to estimate values and to 10 the risk in their portfolios. This has led to a proliferation of types of home loan, some of 11 have improved risk-management characteristics.We are also beginning to see new kinds of 12 for homes, which will make it possible to protect the value of 13 ,for most people, is the single most important 14 of their wealth. The Yale University-Neighbourhood Reinvestment Corporation programme, 15 last year in the city of Syracuse, in New York state, may be a model for home-equity insurance policies that 16 sophisticated economic indices of house prices to define the 17 of the policy. Electronic futures markets that are based on econometric indices of house prices by city, already begun by City Index and IG Index in Britain and now 18 developed in the United States, will enable home-equity insurers to hedge the risks that they acquire by writing these policies.These examples are not impressive successes yet. But they 19 as early precursors of a technology that should one day help us to deal with the massive risks of inequality that 20 will beset us in coming years.
微信支付 
支付宝支付