[单选题]下列( )不是信息的特征。
A客观性
B精确性
C相对性
D无限性
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1.
以下属于虚拟化技术的是（ ）。
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2.
主题库建设是数据仓库建设的一部分。主题库建设可采用多层级体系结构，即（ ）和主题库层。
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3.
某企业在一会计期间的毛利润为4000元，期间发生的各项费用为600元，已知其 净利润为 销售收入的10%，请通过计算回答以下问题：（1）该企业本期的净利润为多少元？（3分）（2）该企业本期的销售收入为多少元？（3分）（3）该企业本期的销售成本为多少元？（4分）
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4.
以下关于数据仓库的描述错误的是（ ）。
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5.
The rapid expansion of e-commerce is radically altering our society.More and more economic activities use the Internet and new( 1 )to do business or to purchase goods and services( 2 ).These interactions and transactions can take place between( 3 ),businesses and consumers.Of particular interest are the cross-border business-to-business (B2B)and business-to-consumer(B2C)transactions that look set to drastically reshape trade and business in Emerging Asia (Emerging Asia is comprised of theten members of the Association of Southeast Asian Nations -Brunei Darussalam,Cambodia,Indonesia,Lao PDR,Malaysia,Myanmar,the Philippines,Singapore,Thailand and Viet Nam-plus China and India).Global cross-border e-commerce is increasingly important in the international economy.It has introduced new dynamics to( 4 )( 5 )business-to-business(B2B)e-commerce,for example,typically involves fewer intermediate links between sellers andbuyers,but it places higher demands on services,especially information,payment and logistics.
