.已知集合A={a,b,2},B={2,b2,2a},且A∩B=A∪B,则a=_______.

.已知集合A={a,b,2},B={2,b2,2a},A∩B=AB,则a=_______.

答案

0

相关题目

阅读下面两首诗,然后回答问题。         喜外弟卢纶见
阅读下面两首诗,然后回答问题。         喜外弟卢纶见宿 司空曙 静夜四无邻,荒居旧业贫。 雨中黄叶树,灯下白头人。 以我独沉久,愧君相见
—Will you attend the meeting this afternoon? —But I ________ told anything a
—Will you attend the meeting this afternoon? —But I ________ told anything about it. A. wasn'tB. am not C. haven't been D. won’t be
有X、Y、Z、W、M五种短周期元素,其中X、Y、Z、W同周期, Z、
有X、Y、Z、W、M五种短周期元素,其中X、Y、Z、W同周期, Z、M同主族; X+与M2-具有相同的电子层结构;离子半径:Z2->W-;Y的单质晶体熔点高、硬度大
— Have you got any particular plans for the coming holiday?    — Yes, ___
— Have you got any particular plans for the coming holiday?    — Yes, _____, I’m going to visit some homes for the old in the city. A. If ever           B. If busy       C.
在果树开花季节,如果阴雨连绵,常会造成果树减产,其主
在果树开花季节,如果阴雨连绵,常会造成果树减产,其主要原因是(   ) A.光照不足,缺少营养           B.下雨影响开花 C.下雨影响传粉
   Dennis Sinar, 51, a doctor from New York, is quick to explain why he took
   Dennis Sinar, 51, a doctor from New York, is quick to explain why he took a year-long break from his job. “I was pretty burned out after practicing medicine for 26 years. I needed a recharge
下图示意大陆西岸某种气候类型的局部分布地区。完成6~7题
下图示意大陆西岸某种气候类型的局部分布地区。完成6~7题。 6.该气候的分布地区中,①地区的分布最高纬度较低(低于35°S),其主要的影响因素是
浏览名人长廊,领悟文明进步。如图:(1)先进思想推动人
浏览名人长廊,领悟文明进步。如图:(1)先进思想推动人类文明进步。为建立理想社会,马克思创立了哪一科学理论?(2)追求政治文明是现代化探

最新题目