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第2周 判断

第2周小测验

1、填空题：
写出以下代码段的执行结果：‌int num=34, max=30;
if ( num >= max*2 )
    System.out.println("zhang");
    System.out.println("huang");
System.out.println("zhu");‌‎‌
答案: 【 huang
zhu】点我阅读全文

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第一讲 我们在哪儿？

第一讲测验

1、单选题：
‏亚里士多德发现有些恒星在埃及能够看到但在希腊却看不到，于是他断言‌
选项：
A: 地球是球形的，具有确定的大小。
B: 恒星在快速运动。
C: 恒星的光变很快。
D: 地球的形状是无限大的平面。
答案: 【 地球是球形的，具有确定的大小。】点我阅读全文

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第一章 现代设计的萌芽--工艺美术运动

工艺美术运动章节检测

1、单选题：
‌“工艺美术”运动由诗人兼文学家、设计师，被人誉称为“现代艺术设计之父”的（   ）倡导宣传和身体力行。‌
选项：
A: 威廉.莫里斯
B: 查尔斯.沃赛
C: 菲利普.韦伯
D: 马克默多
答案: 【 威廉.莫里斯】点我阅读全文

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第1章 导论知识与批判

第1章测试

1、单选题：
​理性思维是根据（ ）解决问题、做出决定或取得理解的思维形式。‎
选项：
A: 知识
B: 学识
C: 理性
D: 哲理
答案: 【 知识】点我阅读全文

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第1讲初始VisualBasic

第1讲单元测验

1、单选题：
​属于VB6.0特点的是 __________。‏
选项：
A: 事件驱动的编程机制
B: 没有数据类型的程序设计语言
C: 基于对象、不支持结构化
D: 没有可视化设计工具
E: 只能通过文本编辑工具编写程序
F: 具有丰富的数据类型、类库
答案: 【 事件驱动的编程机制;
具有丰富的数据类型、类库】点我阅读全文

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第一章从物理层面认识产品

章节测试

1、单选题：
‎如果我们把产品设计创新流程大致概括一下，大致依次分为（  ）、设计、设计的实现以及市场化阶段？‌
选项：
A: 寻找设计方向
B: 画草图
C: 做模型
D: 做样机
答案: 【 寻找设计方向】点我阅读全文

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第一章系统写作理论

单元测试二

1、单选题：
‎文本生产阶段一般划分为构思阶段、起草阶段与（    ）等。‏
选项：
A: 写作阶段
B: 修改阶段
C: 准备阶段
D: 发表阶段
答案: 【 修改阶段】点我阅读全文

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发动机电子控制系统

第七章发动机电子控制系统-测验

1、单选题：
‍爆燃传感器的信号是作为         控制的反馈信号。‏
选项：
A: 喷油量
B: 点火正时
C: 断油
D: 喷油时刻
答案: 【 点火正时】点我阅读全文

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Lesson 2

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1章 绪论

1.4 行政管理学的研究对象与研究方法

1、单选题：
‌德国学者冯· 史坦因（Lorenzvon Stein）。他于1865年撰写了《行政学》一书，但他当时主要是在（）的意义上使用“行政学”一词的‏
选项：
A: 民法
B: 行政法
C: 经济法
D: 程序法
答案: 【 行政法】点我阅读全文

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