The copper which is included in the said copper ore by under existingPROBLEM TO BE SOLVED: To provide a method for extracting and separating copper and/or gold from chalcocite in an extraction rate of 99% or higher by a wet process, without generating sulfur dioxide.六川 暢了...
a占地面积为 The area is[translate] aCopper use in each unit will be 0.76 kilograms, which should result in increased copper usage of 500 tonnes. 铜用途在每个单位将是0.76公斤,应该导致500吨增加的铜用法。[translate]
百度试题 结果1 题目In batteries, which chemical element is commonly used? A. Copper B. Iron C. Zinc D. Aluminum 相关知识点: 试题来源: 解析 C。锌在电池中被广泛使用。铜常用于电线等,铁主要用于建筑等领域,铝在包装等方面有应用。反馈 收藏 ...
解析 B。解析:澳大利亚的采矿业与多种金属有关,但黄金(gold)开采在澳大利亚非常著名。A选项铜(copper)虽然也是金属矿产,但澳大利亚并非以铜开采最为出名。C选项锡(tin)不是澳大利亚主要的与采矿业紧密相关的金属。D选项锌(zinc)同样不是澳大利亚采矿业最具代表性的金属。
百度试题 结果1 题目Which of the following substances is soluble in water? A. Copper B. Salt C. Sand D. Oil 相关知识点: 试题来源: 解析 B。铜(Copper)不溶于水,沙子(Sand)不溶于水,油(Oil)不溶于水,盐(Salt)能溶于水。反馈 收藏 ...
occupies a higher position in the progression can displace another metal that occupies a lower position from its solution. Since we can arrive at the fact that every higher member is more reactive than the lower member. Iron occupies a higher position with respect to copper. Therefore, Iron is...
Note that if you have multiple max values per group, all will be returned. Update On a Hail Mary chance that this is what the OP is requesting: In [5]: df['count_max'] = df.groupby(['Sp','Mt'])['count'].transform(max) ...
百度试题 结果1 题目The metals which we find in the earth___(包括)iron,lead and copper.在我们地球上发现金属包括有铁,铅和铜 相关知识点: 试题来源: 解析 include
【题目】(3)There are many copper mines in the state of Arizona, which contributesto the state'seconomy. 答案 【解析】【答案】significantly【核心短语/词汇】contribute to:有助于,促进【翻译】亚利桑那州有许多铜矿,对该州的经济有着重要的贡献。【解析】此处需要用副词修饰动词contribute(贡献),而形容词si...
18 NATURE [MARCH 2, 1916 parts is only about 10 in. per annum. The valley possesses considerable mineral wealth, including gold, copper, lead, iron, turquoise, coal, and gypsum. The metalliferous deposits, especially gold, have been ex- tensively worked. But, from an agricultural point of...