Metal is a common material in engineering. Which of the following is not a metal? A. iron B. aluminum C. glass D. copper 相关知识点: 试题来源: 解析 C。本题考查材料科学中金属的概念。铁(iron)、铝(aluminum)和铜(copper)都是常见的金属。而玻璃(glass)是一种非金属材料,主要由硅酸盐等组成。
A。此题考查演绎推理。因为金属导电,铜是金属,所以铜导电,A 选项 conducts 正确,B 选项 doesn't conduct 意思是不导电,不符合推理;C 选项 conduct 形式错误,主语 copper 是第三人称单数,要用 conducts;D 选项 don't conduct 形式错误且意思不符合推理。反馈...
Frank Holmes
After carbonates, the next most common non-silicate minerals are the oxides, halides, and sulfides. Oxides consist of metal ions covalently bonded with oxygen. ... Other iron oxides include limonite, magnetite, and hematite. Hematite occurs in many different crystal forms. Is gold a silicate?
Base Metal Examples Common examples of base metals are copper, lead, tin, aluminum, nickel, and zinc. Alloys of these elemental metals are also base metals, such as brass and bronze. United States Customs and Border Protection also includes metals such as iron, steel, aluminum, molybdenum, tu...
百度试题 结果1 题目Copper is a kind of(a)stone(b)marble(c)wood(d)metal 相关知识点: 试题来源: 解析 d 反馈 收藏
百度试题 结果1 题目Which is a non-metal element? A. Gold B. Silver C. Oxygen D. Copper 相关知识点: 试题来源: 解析 C。Gold(金)、Silver(银)、Copper(铜)都是金属元素,Oxygen(氧)是非金属元素。反馈 收藏
Other commodities that trade on commodities exchanges include silver, platinum, rice, sugar, orange juice, oats, cattle, corn, copper, cocoa, soybeans, and coffee. This, however, is not an exhaustive list of what you can find on an exchange. ...
Copper is an alloying element in some grades of aluminum, but it is not a desirable element for mills producing grades of aluminum that are supposed to be copper-free. We previously published a copper compendium –several articles relating to the value of copper in the metal and alloy world....
Copper is used in many different ways, such as for making wires, engine coils, printed circuits, roofing materials, piping materials, heating materials, jewelry, and cookware. It's also used to make bronze, which is a special kind of metal. ...