问题 问答题

某投资咨询单位承担了某投资项目的可行性研究咨询业务,在完成了市场分析、建设条件和厂址选择、工艺技术方案的确定、环境影响和社会影响分析评价、财务评价与国民经济评价等工作内容后,确定了该项目的财务效益是可接受的,国民经济的直接效益和间接效益能满足要求。下一步需要对该项目进行相关的风险分析评价。
问题

输入变量的概率分布通常有哪些类型

答案

参考答案:主要有离散型概率分布和连续型概率分布两类,其中连续型概率分布中常见的有:正态分布、三角形分布、β分布、经验分布等。

单项选择题

So long as teachers fail to distinguish(differ) between teaching and learning, they will continue to undertake to do for children that which only children can do for themselves. Teaching children to read is not passing reading on to them. It is certainly not endless hours spent in activities about reading. Douglas insists that "reading cannot be taught directly and schools should stop trying to do the impossible".

Teaching and learning are two entirely different processes. They differ in kind and function. The function of teaching is to create the conditions and the climate that will make it possible for children to plan cleverly the most efficient system for teaching themselves to read. Teaching is also a public activity. It can be seen and observed.

Learning to read involves all that each individual does to understand the world of printed language. Almost all of it is private, for learning is an occupation of the mind, and that process is not open to public scrutiny.

If teacher and learner roles are not interchangeable, what then can be done through teaching that will aid the child in the long search for knowledge Smith has one principle rule for all teaching instructions. "Make learning to read easy, which means making reading a meaningful, enjoyable and frequent experience for children. "

When the roles of teacher and learner are seen for what they are, and when both teacher and learner fulfill them properly, then much of the pressure and feeling of failure for both is got rid of. Learning to read is made easier when teachers create an environment where children are given the chance to solve the problem of learning to read by learning.

The problem with the reading course as mentioned in the first paragraph is that ().

A. too much time is spent in teaching about reading

B. reading tasks are given with little guidance

C. it is one of the most difficult school courses

D. students spend limited hours in reading

填空题