试述国有企业建立现代企业制度改革中产权明晰的含义及其实现途径。

计算图示网络工期，并指出关键线路。

关于学习迁移的理论有哪些?它们的主要观点是什么?对我们的教育与教学工作有何启发意义?

社论

根据事件4，指出发包人扣留质量保证金的金额不应超过多少？质量保证金的退还有哪些要求？

媒介

下面是某英语教师在写作课的教学片段，阅读并回答问题。
Tell students we would write an article for our favorite sports, and the topic is about sports.
Show students a model article on the screen and lead them to find out the format of an article: main heading, smaller heading and the body.
Run a brainstorming activity: show some pictures about the sports and the famous athletes.
Ask students the questions as follows.
Why are you interested in that sport?
Who is your favorite athlete ?
What do you do to improve your skills?
Then I would ask them to have a discussion about the above questions. They can change their ideas with their partners and find out the similarities and differences. Then choose one idea to write with. After the discussion, I would pick some students to report their topics at the front.
根据上面的课堂教学片段回答下面三个问题：
(1)该片段属于什么教学环节？体现了哪种写作教学模式？
(2)请从写作教学原则的角度，评价该教学片段。
(3)该片段中教师的课堂角色有哪些？

（2014年上真题）若 f(x)在[a,b] 上连续，在 (a,b)内可导，则在(a,b) 内（       ）

某保险公司多年统计资料表明，在索赔户中被盗索赔户占 20%， 以 X 表示在随意抽查的 100 个索赔户中因被盗向保险公司索赔的户数.

（1）写出 X 的概率分布.

（2）利用棣莫弗‐拉普拉斯定理，求出被盗索赔户不小于 14 户不多于 30 户的概率的近似值.

矿井二期工程以什么工程为为代表？主、副井施工区的二期工程包括哪些？

简述幼儿好奇心的发展特点。