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第三周

第一章测验题

1、单选题：
目前我国采用的高程基准是（ ）‍‌‍
选项：
A: A 1956年黄海高程
B: B 1965年黄海高程
C:  C 1985年黄海高程  
D: D 1995年黄海高程
答案: 【  C 1985年黄海高程  】点我阅读全文

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第一章小说导论

第一章单元测试

1、单选题：
‍下列不属于文学艺术的三种基本功能的是（    ）。‍
选项：
A: 认知功能
B: 审美功能
C: 教育功能
D: 模仿功能
答案: 【 模仿功能】点我阅读全文

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第一章C语言概述

C语言概述

1、单选题：
‌C语言程序从（ ） 开始执行。‏
选项：
A: 程序中第一条可执行语句
B: 程序中第一个函数
C: 程序中的main函数
D: 包含文件中的第一个函数
答案: 【 程序中的main函数】点我阅读全文

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Lesson2

Scanning

1、单选题：
‌Read the passage "The Discovery of X-rays" quickly and choose the paragraph(s) which contain(s) the answer(s). You may choose more than one answer for question 3. ‌‌‌The Discovery of X-rays‌‌ ‌Par. 1 Except for a brief description of the Compton effect, and a few other remarks, we have postponed the discussion of X-rays until the present chapter because it is particularly convenient to treat X-ray spectra after treating optical spectra. Although this ordering may have given the reader a distorted impression of the historical importance of X-rays, this impression will be corrected shortly as we describe the crucial role played by X-rays in the development of modern physics.‌Par. 2 X-rays were discovered in 1895 by Roentgen while studying the phenomena of gaseous discharge. Using a cathode ray tube with a high voltage of several tens of kilovolts, he noticed that salts of barium would fluoresce when brought near the tube, although nothing visible was emitted by the tube. This effect persisted when the tube was wrapped with a layer of black cardboard. Roentgen soon established that the agency responsible for the fluorescence originated at the point at which the stream of energetic electrons struck the glass wall of the tube. Because of its unknown nature, he gave this agency the name X-rays. He found that X-rays could manifest themselves by darkening wrapped photographic plates, discharging charged electroscopes, as well as by causing fluorescence in a number of different substances. He also found that X-rays can penetrate considerable thicknesses of materials of low atomic number, whereas substances of high atomic number are relatively opaque. Roentgen took the first steps in identifying the nature of X-rays by using a system of slits to show that (1) they travel in straight lines, and that (2) they are uncharged, because they are not deflected by electric or magnetic fields.‌Par. 3 The discovery of X-rays aroused the interest of all physicists, and many joined in the investigation of their properties. In 1899 Haga and Wind performed a single slit diffraction experiment with X-rays which showed that (3) X-rays are a wave motion phenomenon, and, from the size of the diffraction pattern, their wavelength could be estimated to be 10-8 cm. In 1906 Barkla proved that (4) the waves are transverse by showing that they can be polarized by scattering from many materials.‌Par. 4 There is, of course, no longer anything unknown about the nature of X-rays. They are electromagnetic radiation of exactly the same nature as visible light, except that their wavelength is several orders of magnitude shorter. This conclusion follows from comparing properties 1 through 4 with the similar properties of visible light, but it was actually postulated by Thomson several years before all these properties were known. Thomson argued that X-rays are electromagnetic radiation because such radiation would be expected to be emitted from the point at which the electrons strike the wall of a cathode ray tube. At this point, the electrons suffer very violent accelerations in coming to a stop and, according to classical electromagnetic theory, all accelerated charged particles emit electromagnetic radiations. We shall see later that this explanation of the production of X-rays is at least partially correct.‌Par. 5 In common with other electromagnetic radiations, X-rays exhibit particle-like aspects as well as wave-like aspects. The reader will recall that the Compton effect, which is one of the most convincing demonstrations of the existence of quanta, was originally observed with electromagnetic radiation in the X-ray region of wavelengths.‌‌‌‌When were X-rays discovered?‌
选项：
A: Par. 1
B: Par. 2
C: Par. 3
D: Par. 4
E: Par. 5
答案: 【 Par. 2】点我阅读全文

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第一章普通话概说

口语训练的方法

1、判断题：
‍要想提高口语水平一定要做到平时多训练。‏
选项：
A: 正确
B: 错误
答案: 【 正确】点我阅读全文

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Unit1ExchangeStudentsandVisitingScholars

第一单元测试

1、判断题：
‌To demonstrate that an applicant is financially able to cover the stay as a visiting scholar, a statement with words like “funds to cover stay” will be very helpful. ‌
选项：
A: 正确
B: 错误
答案: 【 错误】点我阅读全文

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项目一Photoshop 术语的学习和环境的搭建

测试1

1、单选题：
‌计算机图像处理技术能够实现的功能是（      ）‌‌‌
选项：
A: 绘制图像      
B: 加工图像       
C: 合成图像       
D: A、B、C选项全部能实现
答案: 【 A、B、C选项全部能实现】点我阅读全文

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第一章 税收筹划基本原理

第一章 税收筹划基本原理

1、单选题：
‏偷税有两个基本特征：(   )和欺诈性。‌
选项：
A: 非固定性
B: 非法性
C: 避税性
D: 随意性
答案: 【 非法性 】点我阅读全文

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第一章 信息安全法概述

第一章单元测验

1、单选题：
‎信息是普遍存在的是指信息的（    ）​
选项：
A: 无限性
B: 普遍性
C: 动态性
D: 有序性
答案: 【 普遍性】点我阅读全文

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1.软件体系结构基础

单元测验

1、单选题：
‎以下哪个软件开发历史顺序是正确的？​
选项：
A: 机器语言 汇编语言 高级语言
B: 汇编语言 高级语言 机器语言
C: 机器语言 高级语言 汇编语言
D: 汇编语言 机器语言 高级语言
答案: 【 机器语言 汇编语言 高级语言】点我阅读全文

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