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.
面对这些现实压力，东风日产明确了下一步的转型规划。
。关于这个话题，WPS官方版本下载提供了深入分析
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Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
鸡柳大人，一年时间从600家店扩张到6000家店，核心就是抓住了消费者的需求：将炸鸡分为多肉型、少肉型组合，用同样的价格提供了更多选择，自然获得消费者青睐。马记永将拉面定义为“大片牛腱子面”，就是为了与普通面馆形成差异化。反观很多门店，产品老化、缺乏新意，就像一个月吃重复的家常菜会腻一样，消费者自然不会反复到店。