A. Non-metals are bad conductors of heat. B. Metals can transfer heat quickly. C. All materials are good conductors of heat. D. Heat can be conducted through metals E. asily. 相关知识点: 试题来源: 解析 C。本题考查对热传导的理解。A 选项非金属通常是不良导体,符合常理;B 和 D 选项...
Electricity can flow through conductors. Which of the following is a good conductor? A. plastic B. wood C. copper D. rubber 相关知识点: 试题来源: 解析 C。解析:电可以通过导体流动。铜是良好的导体。选项 A 塑料、选项 B 木头和选项 D 橡胶都是绝缘体。
Which of these materials are usually poor conductors of heat and electricity? a. metals b. metalloids c. nonmetals d. alkaline earth metals Periodic Trends: The periodic table can be used as a useful tool to classify and organiz...
Electricity can flow through conductors.Which of the following is a good conductor? A. Rubber. B. Wood. C. Metal. D. Glass. 相关知识点: 试题来源: 解析 C。本题考查导体的认识。橡胶、木头和玻璃都是绝缘体,金属是良好的导体。反馈 收藏 ...
瑞鸿网词典双语例句In addition to copper, there are many other metals which are good conductors.除了铜之外, 还有很多其他金属都是良导体.
The separating-members 19 are each provided with a hook 21 which is adapted to engage a hook 22 formed on the armature of an electromagnet 29 which is energized only when a conducting fragment passes beneath the corresponding contact 20. Passage of a conducting fragment causes the armature of ...
题目All China's major cities have good transport(1) networks( network). There are the tour buses, mini buses, taxis, as well as public buses, Buses in Chinese towns are always(2) crowded(crowd). The fare depends on distance, and is payable to the (3) conducto...
Which organic compounds are mostly good conductors of electricity? What power speaker is needed to produce a sound intensity level of 108 dB for someone that is sitting 13.5 m away from the speaker? (in W) What light elements are formed in the Big bang theory? What are the two important ...
Covalent compounds are more likely to be flammable Because these two elements have nearly identical electronegativities, they form covalent compounds when
The heating elements are constructed using 0Cr21Al6Nb round wire, which is a type of FeCrAl alloy referred to as Khantal., You can get more details about The heating elements are constructed using 0Cr21Al6Nb round wire, which is a type of FeCrAl alloy re