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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.
，这一点在im钱包官方下载中也有详细论述
Even Benjamin Franklin's face on a piece of paper can feel like a mere proxy
对待过去，新官要理旧账；面向未来，甘于“栽树”“铺路”；着眼全局，树牢“一盘棋”意识……每个人都要跑好属于自己的“这一棒”，“当好中国式现代化建设的坚定行动派、实干家”。