This formula is satisfiable because if we set to b to true and a to false, then the whole formula is true. All other assignments make the formula false, but it doesn't change that the formula is satisfiable as long as there is at least one assignment makes the formula true.
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第三十六条 从事核技术应用生产经营活动的单位,应当依法取得相应的资质,严格执行放射性同位素和射线装置在生产、运输、销售、使用、贮存、处置各环节的管理规定。