The pencil is made of wood and graphite. We can use it to write. What is the material of the pencil? A. iron B. wood C. plastic D. gold 相关知识点: 试题来源: 解析 B。铅笔是由木头和石墨制成的,题干中“pencil is made of wood and graphite”,所以答案是 wood。
字母类字谜 谜面:I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by every person. •谜底:A pencil. •解析:铅笔的笔芯(graphite)是从矿井中开采出来的,然后被封闭在木制的外壳里,人们在使用铅笔时,笔芯会逐渐变短,但始终不会被释放...
B.Carbon.C.Lead.D.Graphite.相关知识点: 试题来源: 解析 D 本题的关键词为graphite,is used to make the“lead”in your pencil.根据关键句可推断出。可能有学生会选[B],因为graphite consists of carbon.但carbon只是一种元素,而不是一种矿物质或金属。
Pens come in a variety of types, including ballpoint, fountain, and gel, each offering different writing experiences and ink properties. On the other hand, a pencil is a writing tool that uses graphite (often mistakenly referred to as lead) encased in wood or a mechanical holder to make ...
A mechanical pencil looks very much like a ballpoint pen, but the fine writing tip is of lead or graphite. The first one was invented in Britain in the early 1820s, and patented by John Hawkins and Sampson Mordon in 1822. This type of pencil opens just like a normal pen, but instead...
athe rich and nourishing formula is puicdly basorbed into the skin 富有和养育的惯例是puicdly basorbed入皮肤[translate] a铅笔是以石墨或加颜料的粘土做成的笔芯为书写介质,用于学习、办公、工程制图、美术、绘画、各种标记等的书写或绘画工具 The pencil are or add the pencil lead take the graphite whic...
pencil is a soft graphite pencil and used by many artists looking to achieve the blackest black as they are a very dark pencil. The soft graphite goes on smoothly producing a desirable a matte finish. However, some artists also commented that they found them a little scratchy and a bit ...
Process of making Graphite in a Lab Graphite is a brittle steel black coloured compound that is used in several different industrial inductor processes as well as in the lady for your pencil. To make graphite in the lab we need the flowing material 1) 10- 15 gram of sucrose, 2) 10 mils...
When most people think pencils, the No. 2 pencil is the first thing that comes to mind. But what does the “2” on a No. 2 pencil actually mean? And what do all of the “B’s,”“H’s” and “HB’s” being thrown around mean, for that matter? Well, it a
Graphene is a one-atom-thick layer of carbon atoms arranged in a hexagonal lattice. It is the building-block of Graphite (which is used, among others things, in pencil tips), but graphene is a remarkable substance on its own - with a multitude of astonis