慕课标签存档订阅

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

6-2-1向量的数量积续随堂测试

1、单选题：

‌

‌选项：
A: 0
B: 1
C: 3
D: 5
答案: 【 5】点我阅读全文

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

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】点我阅读全文

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

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

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

第一章单元测试

1、单选题：
‌  质量的好坏由________来评判。‍
选项：
A:   产品或服务的提供者 
B:   产品或服务的接受者
C:   质量管理机构
D:   质量认证机构
答案: 【   产品或服务的接受者】点我阅读全文

第1讲之模拟练习题

1、单选题：
​计算之树中，通用计算环境的演化思维是怎样概括的？________。‎
选项：
A: 程序执行环境—由CPU-内存环境，到CPU-存储体系环境，到多CPU-多存储器环境，再到云计算虚拟计算环境
B: 网络运行环境---由个人计算机、到局域网广域网、再到Internet
C: 元器件---由电子管、晶体管、到集成电路、大规模集成电路和超大规模集成电路
D: 上述全不对
答案: 【 程序执行环境—由CPU-内存环境，到CPU-存储体系环境，到多CPU-多存储器环境，再到云计算虚拟计算环境】点我阅读全文

Unit 4 (Unit 7 Clean Energy)

1、判断题：
‌In addition to an enabling technology, a specialized business model, a careful market-adoption strategy and a favorable government policy are indispensable to the promotion of new energy. ​‌​
选项：
A: 正确
B: 错误
答案: 【 正确】点我阅读全文