2nf,3nf,bcnf之间的区别与联系

写放飞梦想的作文,帮我找一些好词好句. 最近的下次日全食是什么时候?偶只是想问问,作业的附加题,顺便帮忙满足一下好奇心 解含绝对值符号的方程,本人一定采纳, 解下列含有绝对值符号的方程：｜x-2｜=3 《夸父追日》中“化为桃林”的“桃”怎么读? 假如你和你的家人或者同学去那个桃林,会发生些什么事?请你展开想象,写写“我们的一次摘桃经历”.22课的哦！ Do you have time this Sunday?的同义句 Do you have time this evening的同义句 ()you()this evening 8公顷的树林,每棵树占地8平方米,能种多少棵树 3000棵20年的树木等于多少公顷树林 请问这个英语句子里面定语从句怎么理解啊?current providers of ..是什么?They note the weakness of the social networks and e-mail providers which are the current providers of informal electronic passports. 为是什么笑傲江湖的英文名叫state of divinity?神之状态?额,是么.我是看到吕颂贤演的那部笑傲江湖上面显示state of divinity,呵呵. the state of the economy 是国家的经济吗?英文应该是economy of the country of的具体用法怎么啊? State of the art 翻译：我们的聚会在这周六晚上.Our party is _____ ______ _____of this Saturday. 英语翻译How do we deal with our problemsRich or poor,young or old,we all have problems.And unless we deal with our problems,we easily become unhappy.Worrying about our problems can affect how we do at school.It can also influence the way we behav 英语翻译and effectively destroyed. How would you justify a raise to your current supervisor? 小明和小红共捐171元小明捐的4分之1和小红捐的5分之一相等小明小红各捐多少 Would you ask for prenuptial agreement before your marriage?why or why not? 为什么现在童工这么多? the current would prevent its landing anywhere.landing在这是动词还是名词 anywhere的这又是副词干嘛用的,修饰什么 If the marriage without love,the tree of happiness would not bloom.主要想知道bloom这样用对不对,还有If the marriage without love在句子中的成分分析. 已知函数f（2x+1）的定义域是［1,4］,则函数fx的定义域是多少? The war______the death of hundreds of people.A.resulted to B.resulted in C.resulted from D.resulted with请把A,B,C,D的解释说清楚, Was the cost of the Civil War in terms of people and their suffering,worth the outcome of the war? 已知函数y=fx的定义域为(0.1),求f(2x)的定义域? 数学题……（说自己做的表来!）（能巧则巧）（1）98x102+192 （2）1216-216除以18x89（3）2788除以（136x3-367）(4)1001x23-125x23x8 (6)963除以[(743-536)c除以23](请做递等式、）说自己做的或者骂人的、或者 有木有一些数学题?我想自己做做~ 支持自己做半径为15的圆中有两条平行弦AB和CD,AB=2√2,CD=2,求AB与CD之间的距离 第一题2 第二题负二 1公顷森林在生长季节,五天可以吸收4.5吨二氧化碳.照这样计算,10平方米森林每天吸收多少二氧化碳?