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FinalExam

Module1MonaLisaSmile

表现技法的常见问题

1、单选题：
‎表现技法的种类包括电脑表现和‎
选项：
A: 水彩表现
B: 手绘表现
C: 3D表现
D: 综合表现
答案: 【 手绘表现】点我阅读全文

第一单元测试

1、多选题：
‍     下列机构属于二战后国际经济关系的基础的是‌
选项：
A:       国际货币基金组织（IMF）
B:       国际复兴与开发银行（IBRD）
C:       关税与贸易总协定（GATT）
D:       世界贸易组织（WTO）
答案: 【       国际货币基金组织（IMF）;
      国际复兴与开发银行（IBRD）;
      关税与贸易总协定（GATT）】点我阅读全文

第七单元 外出 单元测试

1、单选题：
‌哪个是“昨天晚上，你干嘛了？”的日语？。​ ​
选项：
A: 昨日の夜は何をしましたか。
B: 昨日の夜は何をしますか。
C: 今日の夜は何をしましたか。
D: 明日の夜は何をしますか。
答案: 【 昨日の夜は何をしましたか。】点我阅读全文

水彩知识

1、单选题：
‍水彩画的兴起，是在18、19世纪的______国，水彩技法逐步完善，并成为独立的画种。‎
选项：
A: 法国
B: 意大利
C: 荷兰
D: 英国
答案: 【 英国】点我阅读全文

随堂测验

1、单选题：
‍药典所指的“精密称定”，系指称取药物重量应准确至所取重量的‎
选项：
A: 百分之一
B: 千分之一
C: 万分之一
D: 十万分之一
答案: 【 千分之一】点我阅读全文

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

绪论测试

1、单选题：
​对保证工作运输质量的是（ ）。‏
选项：
A: 车站
B: 机务段
C: 车辆段
D: 中间站
答案: 【 车站】点我阅读全文

概说广播节目播音与主持单元测试

1、单选题：
“破立统一的无我之境”中“无我”指的是什么？‌‌
选项：
A: 一切为内容服务
B: 要时刻在节目中强调播音员的声音、形象及流畅的表达
C: 播音员要在节目中完全忘却自我身份
D: 播音员在节目中要时刻为受众着想
答案: 【 一切为内容服务】点我阅读全文

单元测验

1、单选题：
‌有意义的理论假设必须具备以下哪种特征：‎
选项：
A: 正确性
B: 可证伪性
C: 客观性
D: 抽象性
答案: 【 可证伪性】点我阅读全文