第一章 数据库系统概述

第一章 数据库系统概述 单元测试

1、单选题:
‎下列说法中错误的是(  )。‏
选项:
A: 信息是数据的内涵,是对数据的语义解释
B: 只有当给数据赋予特定语义后,数据才可转换为可传递的信息
C: 数据管理是数据处理中的核心环节,其优劣直接影响数据处理的效果
D: 数据是信息的符号表示,因此,同一信息只能用一种数据形式来表示
答案: 【 数据是信息的符号表示,因此,同一信息只能用一种数据形式来表示点我阅读全文

第一章二维动画制作基础

第一章二维动画制作基础测验

1、多选题:
‍Flash 的工作界面主要包括哪几个元素:‏
选项:
A: 时间轴
B: 工具箱
C: 舞台
D: 舞台
答案: 【 时间轴;
工具箱;
舞台;
舞台
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第一章合伙企业会计

1.1合伙企业会计的概述

1、单选题:
会计年度终了,“本年利润”账户中的损益,应按合伙协议的规定转入:()                                          ​​​​​
选项:
A: “利润分配”账户
B: “合伙人资本”账户
C: “应付合伙人贷款”账户
D: “应收合伙人借款”账户
答案: 【 “合伙人资本”账户点我阅读全文

第0章绪论

2随堂测试

1、单选题:
‌焊条电弧焊是采用(    )方式实现隔绝空气。‌
选项:
A: 熔渣保护
B: 气体保护
C: 气渣联合保护
D: 真空保护
答案: 【 气渣联合保护点我阅读全文

Unit1Freshstart

ReadingComprehension

1、单选题:
For thousands of years, people have known that the best way to understand a concept is to explain it to someone else. "While we teach, we learn," said Roman philosopher Seneca. Now scientists are bringing this ancient wisdom up-to-date. They're documenting why teaching is such a fruitful way to learn, and designing innovative ways for young people to engage in instruction.‏Researchers have found that students who sign up to tutor others work harder to understand the material, recall it more accurately and apply it more effectively. Student teachers score higher on tests than pupils who're learning only for their own sake. But how can children, still learning themselves, teach others? One answer: They can tutor younger kids. Some studies have found that first-born children are more intelligent than their later-born siblings (兄弟姐妹). This suggests their higher IQs result from the time they spend teaching their siblings. Now educators are experimenting with ways to apply this model to academic subjects. They engage college undergraduates to teach computer science to high school students, who in turn instruct middle school students on the topic.‏But the most cutting-edge tool under development is the "teachable agent"—a computerized character who learns, tries, makes mistakes and asks questions just like a real-world pupil. Computer scientists have created an animated (动画的) figure called Betty's Brain, who has been "taught" about environmental science by hundreds of middle school students. Student teachers are motivated to help Betty master certain materials. While preparing to teach, they organize their knowledge and improve their own understanding. And as they explain the information to it, they identify problems in their own thinking.‏Feedback from the teachable agents further enhances the tutors' learning. The agents' questions compel student tutors to think and explain the materials in different ways, and watching the agent solve problems allows them to see their knowledge put into action.‏Above all, it's the emotions one experiences in teaching that facilitate learning. Student tutors feel upset when their teachable agents fail, but happy when these virtual pupils succeed as they derive pride and satisfaction from someone else's accomplishment.‏1. What are researchers rediscovering through their studies?A.Seneca's thinking is still applicable today.B.Better learners will become better teachers.C.Human intelligence tends to grow with age.D.Philosophical thinking improves instruction.‏‏‏‎‏
选项:
A: Seneca's thinking is still applicable today.
B: Better learners will become better teachers.
C: Human intelligence tends to grow with age.
D: Philosophical thinking improves instruction.
答案: 【 Seneca's thinking is still applicable today.点我阅读全文

第1周Web开发入门

随堂测试

1、多选题:
‌下列关于WEB开发说法正确的是( ) ‍
选项:
A: Web是图形化的和易于导航的
B: Web与平台无关
C: Web是分布式的
D: Web 是动态的
答案: 【 Web是图形化的和易于导航的;
Web与平台无关;
Web是分布式的;
Web 是动态的
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1 绪论

第二章测试

1、单选题:
在下列功率电子器件中开关频率最高的是()‍‎‍
选项:
A: SCR
B: GTR  (BJT) 
C: IGBT
D: POWER MOSFET
答案: 【 POWER MOSFET点我阅读全文

第一章 初识电子商务

1.1 随堂测验

1、单选题:
​电子商务这一名词中的“电子”是指:‍
选项:
A: 万维网;
B: 因特网;
C: 泛指电子商务实现所依赖的技术基础;
D: 特指电子商务必须依赖因特网展开;
答案: 【 泛指电子商务实现所依赖的技术基础;点我阅读全文

第一周绪论

1.1有机化合物和有机化学随堂测验

1、单选题:
​下列化合物中,不是有机化合物的是(        )  ‌
选项:
A: 叶绿素
B:  氯仿   
C: 尿素  
D:  氨气
答案: 【  氨气点我阅读全文