The word 'revamp'(Line 1, Paragraph 3)probably means

判断题通信子网主要负责全网的信息处理数据处理业务，向网络用户提供各种网络资源和网络服务。()

未分类题People are using more composites in making aircrafts mainly becauseA．composites themselves are very light, strong and as flexible as metal.B．composites can reduce the plane weight leading to less fuel consumption and carbon emissions.C．composites can cause less carbon emissions in the process of flying.D．composites are less expensive than metal.

判断题Word无法自动保存文档。()

未分类题Whats the authors attitude towards xenotransplantation?

判断题路由器主要用于局域网的连接。（）