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[单选题]
关于预测与决策的关系，正确的表述是
A
决策服务于预测
B
决策贯穿于预测的全过程
C
预测是决策科学化的前提
D
预测侧重于对有利时机的选择
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试题答案：
C
答案解释：
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在网络图的绘制中，用来表示行政任务的一个工作单元，需要以一定的人力、物力、 财力为基础，经过一定时间才能完成的是
X理论—Y理论是由（ ）提出的。
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4.某公司将其存货计价方法由先进先出改为后进先出，这违背了会计假设的是
3.
Passage Three Eating an apple a day doesn' t keep the doctor away, but it does reduce the amount of trips you make to the drug store per year. That’ s according to a new study that investigates whether there' s any truth in the old saying.A team of researchers led by Dr Matthew Davis, of the University of Michigan School of Nursing, asked 8, 399 participants to answer survey questions about diet and health. A total of 753 were apple eaters, consuming at least 149g of raw apple per day. The remaining 7, 646 were classed as non-apple eaters. When both groups answered questions on trips to the doctor and trips to the drug store per year, the apple eaters were found to be 27% less likely to visit the druggist for drugs.Trips to the doctor were not significantly affected by apple consumption, though." Evidence does not support that an apple a day keeps the doctor away. However,the small number of uUS adults who eat an apple a day does appear to use fewer prescription medications," the study concludes.Apple eaters were also found to be less likely to smoke and be more likely to have a higher educational attainment than non- apple eaters. While apples do not compete with oranges, they docontain some immune (免疫的) system- increasing vitaminC，which may be why apple -eaters visit the druggist less. With over 8mg of vi taminC per medium-sized fruit, an apple can provide roughly 14% your daily recommendedintake.Previous studies have also linked apple consumption to a lower risk of Type 2diabetes (二 型糖尿病) , improved lung function and a lower risk of colon (结肠) can cer.
4.
已知销售价格M=10元/件，单件可变成本V′=2元/件，固定成本F=50万元，若希望利润S至少10万元，请问销售量至少为多少?当增加广告费A=4万元后，销售量至少为多少才能保证上述利润?
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20．1935 年 10 月，中央红军结束长征并同红十五军团胜利会师于
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