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(三) 一批由同种原料织成的布,用5种不同的印染工艺处理后研究缩水率试验。已知每种印染做4次试验,并由测试结果计算得到方差分析表的主要结果如下表:变差来源偏差平方和自由度均方和FF0.95(4,15)因子A误差eSA=46.24Se=48.3711.563.2253.583.06总计TSt=94.6119 05的水平下推断______。

A.

A.因素A显著

B.
B.因素A不显著

C.
C.不能判定

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We can begin our discussion of "population as global issue" with what most persons mean when they discuss "the population problem": too many people on earth and a too rapid increase in the number added each year. The facts are not in dispute; it was quite right to employ the analogy that likened demographic growth to "a long, thin powder fuse that bums steadily and haltingly until it finally reaches the charge and explodes". To understand the current situation, which is characterized by rapid increases in population, it is necessary to understand the history of population trends. Rapid growth is a comparatively recent phenomenon. Looking back at the 8,000 years of demographic history, we find that populations have been virtually stable or growing very slightly for most of human history. For most of our ancestors, life was hard, often nasty, and very short. There was high fertility in most places, but this was usually balanced by high mortality. For most of human history, it was seldom the case that one in ten persons would live past forty, while infancy and childhood were especially risky periods. Often, societies were in clear danger of extinction because death rates could exceed their birthrates. Thus, the population problem throughout most of history was how to prevent extinction of the human race. This pattern is important to notice. Not only does it put the current problems of demographic growth into a historical perspective, but it suggests that the cause of rapid increase in population in recent years is not a sudden enthusiasm for more children, but an improvement in the conditions that traditionally have caused high mortality. Demographic history can be divided into two major periods: a time of long, slow growth which extended from about 8000 B.C. till approximately 1650A.D. In the first period of some 9,600 years, the population increased from some 8 million to 500 million in 1650. Between 1650 and 1975, the population has increased from 500 million to more than 4 billion. And the population reached 6.2 billion throughout the world by the year 2000. One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8000B.C. and 1650, an average of only 50,000 persons was being added annually to the world’s population. At present, this number is added every six hours. The increase is about 80,000,000 persons annually. The word "demographic" (Line 4, Para. 1 ) means ______.

A. statistics of human
B. surroundings study
C. accumulation of human
D. development of human

世界统一于存在。 ( )

A. 对
B. 错

如果代理人丧失民事行为能力,则法定代理或委托代理关系终止。 ( )

A. 对
B. 错

(七) 某企业为了充分利用2008年奥运会可能给企业带来的商机,成立了“如何抓住机遇,实现企业上台阶”为课题的QC小组。 由于对即将来临的机遇认识不清,所以,首先应用______加深认识,统一思想。

A. 系统图
B. 亲和图
C. 网络图
D. 流程图

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