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1【题文】Benny is only seven, he doesn’t even know ___ electricity is.A.whatB.whyC.whichD.where 2()2. Benny is only seven, he doesn't even knowelectricity is. A.whyB.whatC.whichD. where 3Benny is only seven, he doesn’t even know ___ electricity is.A.whatB.whyC.whi...
结果1 题目 二、用what 或how填空1. What useful electricity it is!2. What interesting books they are!3. _How delicious the dish is!4. _How beautiful the dress is!5. How well she sings! 相关知识点: 试题来源: 解析 答案见上 反馈 收藏 ...
电的用途是什么？
THE main object of this book is to sustain the contention that something more than the usually accepted electrical idea is needed if we would aim at solving the many problems which exist around us.. 1908 Nature Publishing Groupdoi:10.1038/078475c0W. Denham. Verschoyle...
Clean electricity, or carbon-free electricity, is electricity without high voltage spikes and drops, meaning it is low on emitting electrical pollution. Electrical pollution, or dirty electricity, is a notable concern for data center operators, as it can cause poor performance in many electronics -...
百度试题 结果1 题目useful electricity is!A)How B)What C)What a D)What an 相关知识点: 试题来源: 解析 A 反馈 收藏
Electricity is very useful. It can power many things. What is electricity made of? A. Water and air B. Protons and electrons C. Gas and oil D. Rocks and soil 相关知识点: 试题来源: 解析 B。解析:电是由质子和电子组成。A 选项水和空气不是电的组成部分;C 选项汽油和石油与电无关;D ...
If it's energy, then electricity is not the movable charges. Instead, electricity is made of invisible electromagnetic fields, and it doesn't wiggle back and forth within the AC cables. Instead it can only exist in the space outside the wires, and not within the metal. Generators do ...
While static electricity can be a nuisance or even a danger, as in the case of static cling or static shock, in other cases it can be quite useful. For instance, static charges can be induced by electrical current. One example of this is acapacitor, so named because it has the capacit...