The element with the symbol Fe is ___. A. fluorine B. iron C. iodine D. iridium 相关知识点: 试题来源: 解析 B。解析:“Fe”是铁的元素符号;“fluorine”是氟,符号 F;“iodine”是碘,符号 I;“iridium”是铱,符号 Ir。反馈 收藏
FLFluorine FLFuerstentum Liechtenstein FLFile List FLField Level(STARS Standard Accounting and Reporting System) FLFanlisting FLFlanker(football position) FLForce Level FLFlerovium(chemical element) FLFluid Level FLFlammable Liquid FLFluorescence Microscopy ...
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百度试题 结果1 题目The element fluorine is a___. A. metal B. non-metal C. metalloid D. noble gas 相关知识点: 试题来源: 解析 B。氟是一种非金属元素。氟具有非金属的特性,不是金属、类金属或稀有气体。反馈 收藏
A. a chemical element that B. a chemical element C. which chemical element D. is a chemical E. lement 相关知识点: 试题来源: 解析 [答案]B [解析]语法题。根据句子结构,可知句子的主语为Fluorine,谓语部分为is a greenish-yellow gas,后面是由that引导的定语从句,所以空格中为同位语,对主语起补充说...
Pure fluorine is a pale yellow, highly corrosive, poisonous gas. It allegedly has a very pungent odor, although since inhalation of the gas is extremely dangerous, this is difficult to verify. It is essentially impossible to find pure fluorine in nature, since the highly reactive element readily...
百度试题 结果1 题目Which element is a halogen? A. Fluorine B. Magnesium C. Calcium D. Silicon 相关知识点: 试题来源: 解析 A。Fluorine(氟)是卤族元素。Magnesium(镁)是金属元素。Calcium(钙)是金属元素。Silicon(硅)是非金属元素。反馈 收藏 ...
PROBLEM TO BE SOLVED: To surely fix both of a fluorine element and a heavy metal element such as lead, zinc, cadmium, chrome, copper, molybdenum and nickel for instance contained in shredder fly ash by a single treatment process.山本 政樹...
a氟是人体中不可缺少的元素,适量的氟可以提高艰苦牙齿,提高牙齿抗酸能力 The fluorine is in the human body the essential element, the right amount fluorine may enhance the difficult tooth, sharpens the tooth acid resistance ability[translate]
The chemical element represented by 'Fe' is ___. A. fluorine B. iron C. helium D. hydrogen 相关知识点: 试题来源: 解析 B。'Fe'代表的化学元素是铁(iron),fluorine 是氟,符号为 F;helium 是氦,符号为 He;hydrogen 是氢,符号为 H。反馈 收藏 ...