mooc答案类别

第一章 会计概述

了解会计基本假设：随堂测验

1、单选题：
‌下列选项中，关于会计主体的概念表述不正确的是（　）。​
选项：
A: 会计主体是会计为之服务的单位或组织
B: 可以是一个独立核算的企业
C: 可以是一个独立核算的组织
D: 就是会计人员和会计工作
答案: 【 就是会计人员和会计工作】点我阅读全文

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绘制二维平面图

绘制直线

1、单选题：
​绘制直线时在命令行输入的命令是‏
选项：
A: C
B: L
C: tr
D: rec
答案: 【 L】点我阅读全文

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第二讲、掌握手型、步型、移动步法中劲法及呼吸

第二讲测验（1）

1、单选题：
‏1、国务院学位委员会（ ）年正式批准体育学科设立武术学科专业博士学位点，这标志着武术作为一门学科已迈入学术领域的最高殿堂。​
选项：
A: 1994                     
B:  1995
C:  1996
D: 1997 
答案: 【  1996】点我阅读全文

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第13讲 数组的定义和使用

第13讲 掌握数组的定义和使用

1、单选题：
‌下列关于数组的描述正确是：‌
选项：
A: 数组的长度是固定的，而其中元素的数据类型可以不同
B: 数组的长度是固定的，而其中元素的数据类型必须相同
C: 数组的长度是可变的，而其中元素的数据类型可以不同
D: 数组的长度是可变的，而其中元素的数据类型必须相同
答案: 【 数组的长度是固定的，而其中元素的数据类型必须相同】点我阅读全文

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第1周 二极管及整流电路

第1周单元测验

1、单选题：
​N型半导体以（  ）导电为主。‎
选项：
A: 电压
B: 离子
C: 空穴
D: 电子
答案: 【 电子】点我阅读全文

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第1讲 电力系统自动化概述和自动装置设计

电力系统自动化概述和自动装置设计的单元测验

1、单选题：
‏在电力系统分析中，主要研究故障后100毫秒内电力系统行为的过程是（）​
选项：
A: 电力系统稳态运行过程
B: 电力系统长期稳定性过程
C: 电力系统电磁暂态过程
D: 电力系统小扰动稳定过程
答案: 【 电力系统电磁暂态过程】点我阅读全文

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第6章 长期股权投资

第6章 长期股权投资 单元测试

1、单选题：
‍长江公司以定向发行自身普通股的方式取得了黄河公司20%的股权，能够对黄河公司实施重大影响。已知，长江公司发行的股票数量为20万股，每股公允价值为22元，面值为1元。为增发该部分股票，长江公司另向证券承销机构支付了20万的佣金和手续费。当日，黄河公司可辨认净资产的公允价值为5000万元，账面价值为4500万元。假定不考虑其他因素，长江公司取得该项股权投资应确认的资本公积为（　　）万元。‍
选项：
A: 460
B: -20
C: 400
D: 420
答案: 【 400】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1讲分析化学实验概述

单元测试1分析化学实验概述

1、单选题：
‏定量分析方法按取样量不同，可分为常量、微量、半微量、超微量等。其中常量分析的试样量为（  ）。‎
选项：
A: >0.1 g或>10 mL
B: <0.1 mg或<0.01 mL
C: 0.1～0.01 g或1～10 mL
D: >0.5 g或>35 mL
答案: 【 >0.1 g或>10 mL】点我阅读全文

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第二讲 静力学公理及常见约束

约束和约束力单元测试

1、单选题：
‎以下说法中错误的是(  )​
选项：
A: 理论力学是研究物体机械运动一般规律的科学。
B: 理论力学与物理中力学部分的主要区别在于理论力学的研究对象和研究方法更加面向工程实际。
C: 刚体是理论力学中的重要概念，理论力学的研究对象只能是刚体。
D: 静力学五个公理是导出静力学中其他定理和定律的基础。
答案: 【 刚体是理论力学中的重要概念，理论力学的研究对象只能是刚体。】点我阅读全文

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