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2012年5月第6题寄存器寻址方式中的操作数放在（）中。
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At a basic level, cloud computing is simply a means of delivering IT resources as (1) . Almost all IT resources can be delivered as a cloud service: applications,compute power, storage capacity, networking, programming tools, even communication services and collaboration (2). Cloud computing began as large-scale Internet Service providers such as Google,Amazon,and others built out their infrastructure. An architecture emerged: massively scaled, (3) distributed system resources, abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on (4) "somewhere on the Internet" and the application runs on both the "cloud servers" and the user's browser. Both clouds and grids are built to scale horizontally very efficiently. Both are built to withstand failures of (5)elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud Service can be continuous. What's more, clouds expand the types of resources available file storage, databases, and Web Service and extend the applicability to Web and enterprise applications. 空白（2）处应选择（）
2011年5月第5题计算机中的浮点数由三部分组成：符号位S、指数部分E（称为阶码）和尾数部分M。在总长度固定的情况下，增加E的位数、减少M的位数可以（）。
2012年5月第38题美工为一本物理课本绘制插图使用矢量图格式的主要原因是（）。
2011年5月第24题用扫描仪以600DPI的分辨率扫描一张2×2英寸的照片，可以得到一幅（）像素的数字图像。
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