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.
Россиян предупредили о смертельной опасности простой утренней привычкиВрач Сысоева: Привычка начинать день с кофе и сигареты повышает риск инсульта，详情可参考safew官方下载
shading: “smooth gradients”。搜狗输入法2026对此有专业解读
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