外刊精读55期:中国电车引领全球新能源革命 China is leading the challenge to incumbent carmakers 30:37 外刊精读56期:客观评价日本核废水的真实危害 How risky is Japan’s release of radioactive water 30:56 外刊精读58期:印度“穷人版”登月成功 How India Pulled Off Its Frugal Moon Landing 28:...
OKUMA, Japan (AP) — Treated and diluted but still slightly radioactive wastewater from the wrecked Fukushima Daiichi nuclear power plant is being discharged into the Pacific Ocean. The first batch being released over the next 17 days is a small part of the tons of water that have...
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Radioactive material exists naturally in the Earth (this is partially why the inside of the Earth is warm) and is produced continuously in the atmosphere by cosmic rays. Humans make radioactive material by causing nuclear reactions in nuclear reactors and particle accelerators. Like tiny bullets, ...
题目问 radioactivity 和 steam 的关系，对应本段第一句和最后一句，第一句说 radioactivity 提供了地球的内热，最后一句说水变成蒸汽到达地表，水受热才能变成蒸汽，而这份热量是 geothermal energy 提供的，这就是二者的关系，所以答案是 C。A 选项说水暴露在 radioactive underground 时候 steam 产生，原文...
According to the Periodic Table of Radioactivity, at this time the most radioactive element known to man is element number 118,Oganesson. The decay rates for the latest man-made elements are so fast that it's hard to quantify how quickly they break apart, but element 118 has theheaviestknow...
I'm sure everyone started thinking about this after what happened in Japan. If water is a possible source of radioactive contamination, why are they using it to surround the damaged nuclear power plants? WiseGeek, in your inbox Our latest articles, guides, and more, delivered daily. ...
However, 120 years ago, the world had a completely different perception of radioactivity. In fact, it was considered to be a miraculous reservoir of health and vitality. Radioactive elements like radium started appearing as ingredients ineverything,fromtoothpasteand watch dials to water and butter!
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