题目内容
若两个数据链路的互操作性实现机制不同，需借助于转换设备 (63) 来实现。
查看答案
搜索结果不匹配？点我反馈
更多问题
案例分析题关系数据库是（）的集合，它由一个或多个关系模式定义。关系数据库的规范化理论指出：关系数据库中的关系应满足一定的要求，最起码的要求是达到1NF，即满足（）。因此，通常情况下，（）不可以作为关系数据库的关系。 关系数据库是（）的集合，它由一个或多个关系模式定义。
若执行以下程序时从键盘上输入9，则输出结果是 (47) 。main() int n; scanf("%d",&n); if(n++＜10)printf("%d\n",n); elseprintf("%d\n",n- -);
(25) 属于推荐性地方标准的代号。
So long as teachers fail to distinguish 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 devise 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 make sense of 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 quest(探索)for knowledge Smith has one principal 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 appropriately, then much of the pressure and feeling of failure for both is eliminated. Learning to read is made easier when teachers create an environment where children are given the opportunity to solve the problem of learning to read by reading. The word "scrutiny" (Line 3, Par
微信支付 
支付宝支付