电视遥控器、摄像机的自动对焦和汽车的远程锁定等利用（ ）进行近庵离通信。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='31811' and id < 2542401 and id<>'2542401' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31811' and id > 2542401 and id<>'2542401' order by id asc limit 5