A、A、PoC
B、B、PTT
C、C、PTC
D、D、PCS
更多“Push to Talk over Cellular是一种基于移动蜂窝公众网络采用VoIP技术的Push to talk业务，其借用了集群系统中的PTT特性，并把集群通信网络中的显著业务特点引入到公众蜂窝网络中。Push to Talk over Cellular简称为（）。”相关的问题
A、I would like to talk with the chief officer. B、I would like to talk with the captain. C、I would like to talk with the second officer. D、I would like to talk with the third officer.
A、Ask for permission B、Record the time in your radio log C、Press the push to talk button three times D、Monitor the channel to insure that it is clear
A、talk then released to listen B、listen then released to talk C、both talk and listen D、ring the station being called
A、to support PUSH-based active database duplication B、to support synchronization of a standby database with the primary database in a Data environment C、To support PULL-based active database duplication D、To support file restores over the network in a Data Guard environment E、To support file recovery over the network in a Data Guard environment
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