单选题:There should be laws that prohibit smoking around children. 题目分类:理工类 题目类型:单选题 查看权限:VIP 题目内容: There should be laws that prohibit smoking around children. A.advocate B.forbid C.inherit D.withdraw 参考答案: 答案解析:
ADSL(非对称数字用户线)是采用( 1 )调制的接入技术,其下行速率为1Mb/s~( 2 ),上行速率为640Kb/s ADSL(非对称数字用户线)是采用( 1 )调制的接入技术,其下行速率为1Mb/s~( 2 ),上行速率为640Kb/s~1Mb/s。ADSL接入互联网的两种方 分类:理工类 题型:单选题 查看答案