选择题：ArrayList和Vector的区别,HashMap和Hashtable的区别

3月9日,刘某将自己的彩色电视机作价2000己卖给陈某,约定陈某于一周内来取电视机,并付清款项。但该

共用题干 English and English Community1. There is no denying that English is a useful language.The people who speak English today make up the largest speech community in the world with the exception of speakers of Chinese. Originally they were small tribes o

多线程有几种实现方法,都是什么?同步有几种实现方法,都是什么?

天气,气象n.w______

共用题干 Nice Name But She's So Deadly1. More than a million people in the United States were told to leave their homes over the weekend as Hurricane（飓风）Dennis headed to the Gulf coast,after killing at least 15 people in the Caribbean Sea.2. If you read the