网课答案标签存档

第一周程序设计的基础知识

测验1：下列哪些能力是计算机擅长而人类不擅长的？

1、多选题：
下列哪些能力是计算机擅长而人类不擅长的？
选项：
A: 推理
B: 计算
C: 记忆
D: 抽象
答案: 【 计算;
记忆】点我阅读全文

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第1周——从键盘中来，到键盘中去，开始输入和输出啦

%c格式转换说明

1、判断题：
‌用c格式符输入字符型数据的时候，为了避免将输入缓冲区中的空白字符（空格、回车换行符、Tab键）作为有效字符读入，可以在%c前面加一个空格。‎
选项：
A: 正确
B: 错误
答案: 【 正确】点我阅读全文

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第一讲 改变世界的物理学

单元测验1——改变世界的物理学

1、单选题：
‌‏‌下列有关物理学史的说法正确的是:‏
选项：
A: 卡文迪许发现了万有引力定律
B: 法拉第发现了电流的磁效应
C: 麦克斯韦首先预言了电磁波的存在
D: 汤姆生提出了原子的核式结构模型
答案: 【 麦克斯韦首先预言了电磁波的存在】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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模块一 认识管理与管理者

随堂测验

1、单选题：
‌3、“人贵在于自知之明”，属于情商中的（    ）‍
选项：
A: 了解自己情绪的能力
B: 控制自己情绪的能力
C: 自我激励能力
D: 了解他人情绪的能力
答案: 【 了解自己情绪的能力】点我阅读全文

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01 制图规格及基本技能

01 单元测试

1、单选题：
‎在土木工程制图中，断开界线可采用（   ）‌
选项：
A: 波浪线
B: 细实线
C: 细虚线
D: 粗单点长画线
答案: 【 波浪线】点我阅读全文

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1 矿井火灾学基础

判断题

1、判断题：
‌富氧燃烧比富燃料燃烧发生回燃的可能性更大？​
选项：
A: 正确
B: 错误
答案: 【 错误】点我阅读全文

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第一章 什么是民法

第一章 单元测验

1、单选题：
‎以下哪一种关系受民法调整‍
选项：
A:  张三和李四约定于某日约会，张三未出席，李四认为受到损 
B:  甲和乙打赌举重石，乙因此受伤 
C:  小王因行为不检被学校记过，小王不服 
D: 小李考试作弊被处分，学校拒发学位证书
答案: 【  甲和乙打赌举重石，乙因此受伤 】点我阅读全文

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第1章 审计与鉴证业务

第1章 审计与鉴证业务

1、单选题：
鉴证业务是指注册会计师对鉴证对象信息提出结论，以增强除责任方之外的预期使用者对鉴证对象信息信任程度的业务。对于鉴证业务的理解，不恰当的观点是（  ）。‌
选项：
A: 鉴证业务中的既定标准是执行业务需要遵循的准则，而不是责任方编制鉴证对象信息依据的标准
B: 鉴证业务的用户是“预期使用者”
C: 鉴证业务的目的是增强除责任方之外的预期使用者对鉴证对象信息的信任程度
D: 鉴证业务的基础是独立性和专业性
答案: 【 鉴证业务中的既定标准是执行业务需要遵循的准则，而不是责任方编制鉴证对象信息依据的标准】点我阅读全文

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第一章 控制系统的基本概念

1.1随堂测试

1、填空题：
生产过程自动化是提高社会生产力的有力工具之一，它在确保生产正常运行、提高产品质量、降低能耗、降低生产成本、        、          、保护环境等方面有巨大作用。‏‏‏
答案: 【 改善劳动条件 减轻劳动强度】点我阅读全文

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