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.
这个被置换而来的孩子，日后人生轨迹被更大的历史力量再次扭转。越南统一前，杜耀豪的外祖母在越南已建立起中产之家，生活优渥。她惦念着留在家乡刚成年的弟弟，计划将他接到越南，帮他改善生活。然而，1949年的政局剧变，隔断了姐弟团聚的迁移计划。，更多细节参见服务器推荐
“人民对美好生活的向往，就是我们的奋斗目标”。关于这个话题，搜狗输入法2026提供了深入分析
What this means for namespace-guard
Let’s start with the small print. We asked 51 judges to select their top 50 men’s Ashes cricketers, from which we calculated a top 100: 50 points for No 1, 49 for No 2 and so on. The voting rules were simple. Players were assessed solely on their performances in Ashes cricket, though judges could interpret that any way they liked. (Yep, someone did vote for Gary Pratt.) The judges had to pick at least 15 players from each country and a minimum of five from each of five different eras: players who made their debut before the first world war; in the interwar years; from the second world war to 1974; from 1975 till 1999; and from 2000 onwards.