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。
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...
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.
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 ...
Laboratory experiments, however, suggest that a highly pressurized iron-nickel alloy might be too dense and that minor amounts of such elements such as silicon, sulfur, carbon, or oxygen may also be present to lighten the core material. Support for the theory that the core is composed of ...
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...
The conveyers 3 are separated by discs 16 and are mounted on drums 4, 5, one of which is intermittently rotated by a ratchet wheel 8 and hooked lever 9, the lever receiving its movement from a cam 10 on the driving shaft 21. A second cam 17 is mounted on the shaft 21 which cam ...
aEach message is composed of a sequence of standardized data elements. 每则消息由规范化的数据元素序列组成。[translate] a名人名言 Celebrity famous saying[translate] a这次旅行对我来讲会是一个挑战 This travel says to me can be a challenge[translate] ...
词人通过四问,呈现出三个不同层次的月亮意象,其一是表达了对亲人的思念之情;其二是表达了词⼈洒脱和旷达的人生态度,具有浓厚的哲学意味;第三是,把月亮升华为一种千里情牵,千里相聚的情感寄托,化作⼀种美好的祝福,同时又把这种情感上升到我们整个中华民族都能够认同的高度。( )
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 ...