题目:
用“四舍五入”法取近似值是8.50的最大三位小数是______;最小三位小数是______.
答案:
“五入”得到的8.50最小是8.495,因此这个数必须大于或等于8.495;
“四舍”得到的8.50最大是8.504,因此这个数还要小于 8.504.
故答案为:8.504,8.495.
用“四舍五入”法取近似值是8.50的最大三位小数是______;最小三位小数是______.
“五入”得到的8.50最小是8.495,因此这个数必须大于或等于8.495;
“四舍”得到的8.50最大是8.504,因此这个数还要小于 8.504.
故答案为:8.504,8.495.
甲在某期货公司开户进行红枣期货交易。近日来,红枣行情不稳,期货公司认为行情将转向多头行情,百般劝甲下达指令买入。甲信以为真,买入红枣期货合约60手,其实期货公司并不十分看好。期货公司违犯了()规定。
A.禁止泄露内幕信息
B.隐瞒重要事项或者使用其他不正当手段,诱骗客户发出交易指令
C.未经委托擅自交易
D.禁止内幕交易
若
|
以下不属于国际储备管理原则的是()
A.多样性
B.安全性
C.流动性
D.盈利性
For more than a decade, the prevailing view of innovation has been that little guys had the edge. Innovation bubbled up from the bottom, from upstarts and insurgents. Big companies didn’t innovate, and government got in the way. In the dominant innovation narrative, venture-backed start-up companies were cast as the nimble winners and large corporations as the sluggish losers.
There was a rich vein of business-school research supporting the notion that innovation comes most naturally from small-scale outsiders. That was the headline point that a generation of business people, venture investors and policy makers took away from Clayton M. Christensen’s 1997 classic, The Innovator’s Dilemma, which examined the process of disruptive change.
But a shift in thinking is under way, driven by altered circumstances. In the United States and abroad, the biggest economic and social challenges—and potential business opportunities—are problems in multifaceted fields like the environment, energy and health care that rely on complex systems.
Solutions won’t come from the next new gadget or clever software, though such innovations will help. Instead, they must plug into a larger network of change shaped by economics, regulation and policy. Progress, experts say, will depend on people in a wide range of disciplines, and collaboration across the public and private sectors.
"These days, more than ever, size matters in the innovation game," said John Kao, a former professor at the Harvard business school and an innovation consultant to governments and corporations. In its economic recovery package, the Obama administration is financing programs to generate innovation with technology in health care and energy. The government will spend billions to accelerate the adoption of electronic patient records to help improve care and curb costs, and billions more to spur the installation of so-called smart grids that use sensors and computerized meters to reduce electricity consumption.
In other developed nations, where energy costs are higher than in the United States, government and corporate projects to cut fuel use and reduce carbon emissions are further along. But the Obama administration is pushing environmental and energy conservation policy more in the direction of Europe and Japan. The change will bolster demand for more efficient and more environmentally friendly systems for managing commuter traffic, food distribution, electric grids and waterways.
These systems are animated by inexpensive sensors and ever-increasing computing power but also require the skills to analyze, model and optimize complex networks, factoring in things as diverse as weather patterns and human behavior. Big companies like General Electric and IBM that employ scientists in many disciplines typically have the skills and scale to tackle such projects.
In the author’s opinion, Obama’s approach to the health and energy problem()
A. is a doomed endeavor at its very beginning
B. typically illustrates the complexity of the situation
C. lacks a proper vision though effective in a short term
D. shows why large organizations are less innovative
2001年10月5日,因供电方责任的电力运行事故使某居民户家用电视机损坏后,已不可修复。其出示的购货发票日期为1991年10月1日,金额为人民币4000.00元。供电企业应赔偿该居民户人民币()元。
A.400
B.4000
C.2000
D.0