百度试题 结果1 题目Lead is the ___ metal used in pencils.相关知识点: 试题来源: 解析 very 反馈 收藏
百度试题 题目Lead is themetal used in pencils.? verymostmuchsuch 相关知识点: 试题来源: 解析 very 反馈 收藏
A thin cylinder of black lead or plumbago (graphite) used in pencils. Bullets; ammunition. The act of leading or conducting; guidance; direction, course Precedence; advance position; also, the measure of precedence; the state of being ahead in a race; the highest score in a game in an in...
Lead (metal))Also found in: Dictionary, Thesaurus, Medical, Financial. Lead, city, United States Lead (lēd), city (1990 pop. 3,632), Lawrence co., W S.Dak., in the Black Hills; laid out 1876 after the discovery of gold there, inc. 1890. It is the site of the famous ...
5. Printing A thin strip of metal used to separate lines of type. 6. leads a. Strips of lead used to hold the panes of a window. b. Chiefly British A flat roof covered with sheets of lead. tr.v. lead·ed, lead·ing, leads 1. To cover, line, weight, or fill with lead. 2...
something made of this metal or of one of its alloys. a plummet or mass of lead suspended by a line, as for taking soundings. Synonyms:plumb,weight bullets collectively; shot. black leadorgraphite. a small stick of graphite, as used in pencils. ...
Lead is toxic, and the main raw material for making pencil lead is graphite and clay. No metal is used at all. Of course, there is no poison. Of course, the habit of biting a pencil still needs to be changed. The wooden pole of the pencil is usually coated with colored pigments. ...
something made of this metal or of one of its alloys. a plummet or mass of lead suspended by a line, as for taking soundings. Synonyms:plumb,weight bullets collectively; shot. black leadorgraphite. a small stick of graphite, as used in pencils. ...
Prismacolor Premier Colored Pencils. ... Cretacolor 72 Aqua Monolith Metal Tin Set. Who invented erasers? 3. Erasers were invented by accident. Though Joseph Priestly may have discovered rubber's erasing properties, it's theBritish engineer Edward Nairnewho is generally credited with developing and...
Removing lead-based paint, or demolishing walls coated with it, can release lead dust into the air. The most common activities that expose workers to lead are: Metalwork Smelting, casting, and refining Welding, brazing, and soldering where lead is in the metal, on the metal, or in ...