百度试题 结果1 题目Chlorine, bromine, and iodine are all ___. A. metals B. halogens C. nonmetals D. noble gases 相关知识点: 试题来源: 解析 B。原因:文中提到“chlorine, bromine, and iodine are all halogens.”。 反馈 收藏
更新1: if all metals not equal to element but are all pure metals equal to element?Thanks you to wer my question again please~更新2: pure =not pound??元素(element)不等于金属(metal)，而金属也不等于元素，就如钢为例子，它虽然是金属，但不是元素，而是化合物(pound)。不过，...
aall types of metal are detected. However, magnetic metals are detected more reliably than non-magnetic ones. This way of measuring also makes it possible to detect metal particles inside the product or in non-metal packaging. The examined products are not harmed or changed in any way. 金属...
[translate] aall types of metal are detected. However, magnetic metals are detected more reliably than non-magnetic ones. This 金属的所有类型被查出。 然而,磁性金属比无磁性那些更加可靠地被查出。 这[translate]
Low-valent alkaline-earth metals in all-metal dinuclear metallocenes M2(η5-E5)2 (M = Be, Mg, Ca; E = Sb, Bi) Low-valent alkaline-earth metals in all-metal dinuclear metallocenes M 2 (畏 5 -E 5 ) 2 (M = Be, Mg, Ca; E = Sb, Bi)[J] . Congzhi ... Congzhi,Wang,and...
摘要: China's Ministry of Industry & Information Technology (MIIT) says that after a thorough review it confirms that all the production capacity in 16 industries such as steel, aluminum, copper and coke targeted for removal in 2015 were eliminated as planned. 年份: 2016 收藏...
the business of buying and selling securities, curreneies, and commodities on an international scale so as to take advantage of differences in rates of exchange and prices.— arbitrager, arbitrageur,n. bimetallism the use of two metals jointly as a monetary Standard with fixed values in relation...
aA direct semiconductor is used when the valence and conduction bands have the same momentum. This semiconductor is important in radiative recombination, in which an electron jumps from one band to the other. 一个直接半导体,当化学价和传导带有同一动量时,使用。 这个半导体是重要的在辐射性再结合,...
It was possible that the colour change could be a consequence of the corrosion of other metals used in the device. In fact, contact with copper or copper alloy is generally associated with green and greenish blue tones [27]. In the prosthesis analysed, high concentrations of copper, aluminium...