百度试题 结果1 题目Which one is not an element? A. Hydrogen B. Oxygen C. Water D. Iron 相关知识点: 试题来源: 解析 C。本题考查物质分类。Hydrogen(氢)、Oxygen(氧)、Iron(铁)都是元素,而 Water(水)是化合物,不是元素。反馈 收藏
百度试题 结果1 题目Which element is represented by the symbol “Fe”? A. Iron B. Gold C. Silver D. Copper 相关知识点: 试题来源: 解析 A。解析:元素符号“Fe”代表铁(Iron)。金是“Au”,银是“Ag”,铜是“Cu”。反馈 收藏
Iron is one of the commonest elements found within the Earth. You probably know the element oxygen. It is the element that we b___in all the time. And elements can combine (结合) to make new things l___H2O. This is hydrogen and oxygen put together, also known as w___! Learning ...
Iron is the heaviest element formed in the cores of stars, according toJPL. Elements heavier than iron can only be created when high mass stars explode (supernovae). The Latin name for iron is ferrum, which is the source of its atomic symbol, Fe. ...
What is the name of the element with symbol Fe? A. Fluorine B. Ferrum C. Iron D. Iodine 相关知识点: 试题来源: 解析 C。符号 Fe 代表的元素是铁,英文名是 Iron。选项 A 氟的元素符号是 F;选项 B 不是常用的元素名称;选项 D 碘的元素符号是 I。反馈 收藏 ...
Iron is a chemical element; it has symbol Fe (from Latin ferrum 'iron') and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, just ahead of oxygen (32.1% and 30.1%, ...
Iron is an essential trace element of the human body 翻译结果2复制译文编辑译文朗读译文返回顶部 Iron is one of the necessary human trace element 翻译结果3复制译文编辑译文朗读译文返回顶部 Iron is one of the necessary human trace element 翻译结果4复制译文编辑译文朗读译文返回顶部 ...
Iron is an essential element of life, as it is widely involved in the synthesis of protein cofactors, heme, and iron-sulfur clusters (Andreini et al., 2018) and subsequently participates in a series of biochemical processes, including cell cycle regulation, oxygen transport, and the mitochondria...
What is Iron? Iron is a JavaScript framework for modern web applications. It favors a performant runtime over a compiler. Features Plain JavaScript: No JSX or compiler JavaScript First: No HTML and no CSS Smart Runtime: No Virtual DOM ...
Iron ore is integral to the steel-making process and one of the most sought after commodities in the world. Download our fact sheet What is iron ore? Iron ores are rocks and minerals from which metallic iron can be extracted. There are four main types of iron ore deposit: massive hematite...