题目内容

以下程序计算自然数e的值，要求精确到1015，阅读下列程序。已知e的计算公式为：e=1+1/1!+1/2! + …+1/n!。请在【6】和【7】处填上正确内容。Private Sub Commandl_ Click() 【6】 n =0: term = 1: t = 1 do n= n +1 t=t/n 【7】 Loop while t ＞1.0E-15 Text1. Text = termEnd Sub

查看答案

搜索结果不匹配？点我反馈

更多问题

简答题试对赫鲁晓夫改革进行评价。

阅读下面的短文，文中有15处空白，每处空白给出4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 One of the most important technological developments during the 1980s has been the emergence of optical fiber communication as a major international industry. One indication of the (51) of this development is the total (52) of installed fiber, which was estimated to be 3.2 million kilometers in the U.S. alone by the end of 1987. Over 90% of this fiber was placed. (53) during the time period of 1982—1987. Long-haul trunk installations(长途干线设施) have dominated, (54) for about 95% of the fiber in the U.S. In the early 1950s the researchers who produced the first clad glass optical fibers were not (55) of using them. for communications. (56) , fiber optics was already a well-established commercial technology when the famous paper by Kao and Hockham, (57) the use of low-loss optical fibers for communication, appeared in 1966. The first low-loss silica fiber was described in a publication which appeared in October of 1970. The date of this publication is sometimes (58) as the beginning of the era of fiber communication. Although this development did receive (59) attention in the research community at- the time, it was far from inevitable that a major industry would evolve. The technological barriers appeared (60) because there were serious doubts as to (61) these fiber components could ever be produced economically enough, but the market potential was very significant. (62) , research and development activity expanded rapidly, and a number of important issues were (63) during the early 1970s. During the middle and late 1970s, the rate of progress towards marketable products accelerated as the emphasis (64) from research to engineering. Fibers with losses approaching the Payleigh limit of 2 dB/km at a wavelength of 0.8um were produced. By 1980 improvement in component performance, cost, and reliability led to major commitments (65) the part of telephone companies.

A. accounting
B. taking up
C. amounting
D. adding up

简答题简述1956～1957年波兰哥穆尔卡改革的主要内容及其影响。

下列程序实现的功能是：当在窗体上单击时，从键盘上读入5个学生的学号、姓名、英语成绩并存入到文件d：\stu1.dat中，然后从文件中读出第3个人的学号、姓名和英语成绩并显示在窗体中。Type student No As Long Name As String * 20 English As IntegerEnd TypePrivate Sub form_ Click () Dim k As student, i As Integer 【8】 Open "d:\stu1. dat" for Random As #10 Len = Reclen for i = 1 To 5 k. No= InputBox(“请输入学号”) k. Name = InputBox (“请输入姓名”) k. English= InputBox (“请输入英语成绩”) 【9】 Next i 【10】 Print k. No; k. Name; k. English Close #10End Sub