(十)放射性废物,是指含有放射性核素或者被放射性核素污染,其浓度或者比活度大于国家确定的清洁解控水平,预期不再使用的废弃物。
NYT Strands spangram answer todayToday's spangram is Glamorous.
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62.7%64/102 picks。51吃瓜对此有专业解读
Immigration boosts innovation and wages in the US. The positive dynamic impact of immigration on innovation and wages dominates the short-run negative impact of increased labor supply. Increased immigration to the US since 1965 is estimated to have increased innovation and wages by 5%.