What atom does carbon-14 decay to? How do we know that Carbon-14 (or radiocarbon) dating is accurate? How does carbon-14 decay? What isotopes are used in radioactive dating? How does C-14 dating work? What is the half-life of argon for radiometric dating?
百度试题 结果1 题目What effects the amount of carbon-14 on earth() A. The life cycle of trees B. The number of trees C. The intensity of solar burning D. The quality of air 相关知识点: 试题来源: 解析 C 反馈 收藏
The Silk Road spirit is consistent with the ideal of “all states joining together in harmony and peace” long upheld by the Chinese nation, with the Chinese people’s principles of amity, good neighborliness and “helping others to succeed while seeking our own success”, and with the call ...
restorers?patienceandpeaceofmindare 6 (especial)preciousinasocietywhereeverythingis changingsofast. Atouchingpartofthedocumentaryis 7 spiritofcraftsmanship(工匠)intherestorers. 8 (year)ofrepeatedboringworkrequires,notonlyskill,butalsofaithandspirit.Mastersin theForbiddenCityhasprovedwrongmanypeople?sideasabou...
解析 【解析】【答案】D【核心短语/词汇】more energy:更多的能源;less carbon:更少的碳【翻译】—一低碳生活是什么样的?—节省更多的能源,产生更少的碳。【解析】more,更多的;less,更少的。低碳生活是比较环保的,根据题意应该选D。 结果一 题目 【题目】()17. -What's the low-carbon (低碳) lifestyle...
---Save energy, produce carbon. A. more; more B. less; more C. less; less D. more; less 相关知识点: 试题来源: 解析 D [解析] 试题分析:more更多的;less更少的。句意:低碳生活方式是什么样子?——节省更多的能源,产生更少的碳素。结合语境可知选D。 考点:形容词辨析 点评:词义辨析考的是学...
what is low-carbon life 青云英语翻译 请在下面的文本框内输入文字,然后点击开始翻译按钮进行翻译,如果您看不到结果,请重新翻译! 翻译结果1翻译结果2翻译结果3翻译结果4翻译结果5 翻译结果1复制译文编辑译文朗读译文返回顶部 什么是低碳生活 翻译结果2复制译文编辑译文朗读译文返回顶部...
27. What is the text mainly about? A. How urgent it was to lead an environmental-friendly life. B. How a family of urban-residents switched to a simple life. C. How significant it was to better adapt to a ne...
—Produce ___ carbon, save ___ energy. A.fewer; moreB.less; muchC.less; more相关知识点: 试题来源: 解析 【答案】C 【解析】 句意:——低碳生活是什么样的?——产生更少的碳,节约更多能源。 考查形容词比较级。fewer更少,修饰名词复数;less更少,修饰不可数名词;more更多,是much和many的比较级,可...
Carbon 14 Dating Measurements A radiocarbon measurement is termed a conventional radiocarbon age (CRA). The CRA conventions include (a) usage of the Libby half-life, (b) usage of Oxalic Acid I or II or any appropriate secondary standard as the modern radiocarbon standard, (c) correction for ...