下一代网络的核心技术是( )。 A.软交换 B.3G C.web2.0 D.I 发布时间:2018-05-27 18:51 │ 来源:www.tikuol.com 题型:单项选择题 问题: 下一代网络的核心技术是( )。A.软交换 B.3GC.web2.0 D.IPV6
题型:单项选择题 如图所示,把一个架在绝缘支架上的枕形导体放在正电荷形成的电场中.导体处于静电平衡时,下列说法不正确的是( )A.A、B两点场强相等,且都为零B.A、B两点场强不相等C.感应电荷产生的附加电场EA>EBD.当电键S闭合时,电子从大地沿导线向导体移动 查看答案
题型:单项选择题 If the United States had built more homes for poor people in 1955, the housing problems now in some parts of the country () so serious.A. wouldn’t beB. wouldn’t have beenC. will not beD. would have not been 查看答案