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已知a为实数，在实数范围对整式x8-a8分解因式，运算到x8-a8为若干个因式的乘积，每个因式不能再分解了，此时这个乘积共有（）。
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2000—2008每年××省进出口总额 年份 进出口(亿美元) 进出口(亿元) 总额 出口 进口 总额 出口 进口 2000 212.23 129.08 83.16 1756.87 1068.55 688.32 2001 226.26 139.22 57.04 1872.98 1152.96 720.49 2002 283.99 173.70 110.28 2350.85 1437.96 912.89 2003 353.26 211.32 141.94 2924.25 1749.28 1174.96 2004 475.27 293.93 181.32 3933.81 2433.00 1500.18 2005 544.11 348.42 195.69 4457.21 2854.15 1603.16 2006 626.59 412.62 213.97 4937.55 32 51.43 1686.12 2007 744.51 499.40 245.10 56 61.24 3797.47 1853.77 2008 848.21 569.92 278.29 5890.90 3958.14 1932.76 以2000年为基准，该省2008年的出口总额约增加( )。
2000—2008每年××省进出口总额 年份 进出口(亿美元) 进出口(亿元) 总额 出口 进口 总额 出口 进口 2000 212.23 129.08 83.16 1756.87 1068.55 688.32 2001 226.26 139.22 57.04 1872.98 1152.96 720.49 2002 283.99 173.70 110.28 2350.85 1437.96 912.89 2003 353.26 211.32 141.94 2924.25 1749.28 1174.96 2004 475.27 293.93 181.32 3933.81 2433.00 1500.18 2005 544.11 348.42 195.69 4457.21 2854.15 1603.16 2006 626.59 412.62 213.97 4937.55 32 51.43 1686.12 2007 744.51 499.40 245.10 56 61.24 3797.47 1853.77 2008 848.21 569.92 278.29 5890.90 3958.14 1932.76 根据以上资料，能够推出的是( )。
国家工商总局公布的数据显示，2009年第一季度，全国工商行政管理机关共查处各类违法违章案件68202件，同比下降29.98%。其中立案查处案件49654件，同比下降32.26%;案件总值33.57亿元，同比下降21.26%；罚没金额3.33亿元，同比下降39.49%。 从违法法规看，违法企业登记管理法规案件9216件，同比下降38.54%；违反产品质量法规案件6760件，同比下降27.51%；违反反不正当竞争法规案件4944件，同比增长6.51%；违反商标法规案件4119件，同比下降21.93%；违反广告法规案件2141件，同比下降24.27%；违反消费者权益保护法规定案件1644件，下降13.66%；违反合同法规案件156件，同比下降57.02%。 从违法主体看，在立案查处的案件中，个体工商户案件22142件，同比下降22.73%；自然人案件12472件，同比下降49.04%；公司案件6521件，同比下降21.73%；私营企业案件3975件，同比下降22.27%;集体企业案件728件，同比下降45.26%。 下列说法与资料相符的有几个( ) (1)2009年第一季度，罚没金额同比下降率大于案件总值同比下降率 (2)2008年第一季度，违反合同法规案件为363件 (3)2009年第一季度，公司案件数大于私营企业案件与集体企业案件数之和
Passage One It is now almost two years since the European Union decided to go ahead with plans to launch a satellite-navigation network to rival America’s existing Global Positioning System (GPS). For much of this time, Galileo, the European system, met with strong opposition from America. However, a round of talks last November seems to have ease American concerns. The final details remained to be negotiated in talks, but the outlook for an agreement was good. The core of the disagreement between the EU and America was whether the signals from the two competing systems might interfere with one another. More specifically, the Americans wanted the ability to jam Galileo without rendering GPS signals ineffective. The agreement reached in November was the first step in this direction. In return for the modification of Galileo’s signals, the Americans agreed to give Europe technical assistance in developing Galileo, and to make sure that the third generation of GPS, to be carried out in 2012, will conform to Galileo’s standards. This will aid the interoperability (互用性)of the two systems, which is a commercial goal of both sides. It will also, in principle, give the Europeans the ability to jam the American signals in the event of a crisis in which the two sides’ interests differ. There is a bewildering array Of different sorts of signals involved in each network. GPS currently has two, a civilian channel known as C/A and a military one, Y-channel. Plans for an additional military channel, called M-code, are in the works. Galileo will debut (初次公开) with five different signals: one freely available to all; a commercial service which is more precise; a "safety-of-life" service that can be used for critical applications; a "public regulated service" (PRS) which will be used by the EU’s governments; and a fifth service that combines positioning information with a distress beacon, which could be used by ships at sea. The negotiations in November resolved a conflict between America’s M-code and the European PRS. What remains is to harmonize Galileo’s free signal with the M-code. Both systems rely on signals precisely timed from atomic clocks carried by the satellites. A user looks at the time on at least four satellites, and triangulates (作三角测量)between them to find his position. Differences in the details of the different signals are what make the fees of applications. Some are more precise than others, and they also have different levels of encryption, to prevent unauthorized users from accessing them. What does the word "encryption" (Line 4, Para. 4) possibly mean
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