Copper:Copper is considered a transition metal on the periodic table. It is highly malleable, shiny, and soft. It is often mixed with other metals such as tin and zinc to make brass and bronze for instruments or electrical wiring.Answer and Explanation: ...
A27 Copper is a metal. Which statements about copper is/are incorrect?Copper conducts heat because the positive ions are free to move.2 Copper conducts electricity because the electrons are free to move.3 Copper ions are held together because of their attraction for each other.4 Copper has a...
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...
Many non-silicate minerals are economically important and provide metallic resources such as copper, lead, and iron.
Copper is regarded as transition metal though it has completely filled d-orbitals (3d^10 4s^1). Explain.
It is low, in regard to copper wiring the metal layer which at least contains the metal component of 1 where it is chosen fromPROBLEM TO BE SOLVED: To provide a multilayer wiring board which has low dielectric loss and low conductor loss and has high adhesive strength between copper wiring...
故填a。【小题5】考查非谓语动词。句意:搪瓷通常在烧制后会收缩,这个过程会重复几次以填充图案。分析句子可知,空处在句中作目的状语,应用动词不定式。故填to fill。【小题6】考查副词。句意:景泰蓝的物品主要用于寺庙和宫殿的装饰,因为它们的华丽被认为适合这些建筑的功能,但不太适合更简单和朴素的氛围,比如学者...
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
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 a non-precious, red-gold colored metal with high electrical conductivity. In fact, the conductivity of copper is so high that it is considered the standard by which other non-precious metals and alloys are compared. The conductivity of copper is affected by the addition of other met...