集中器和采集器的主要区别是( )。 The main difference between concentrator and collector is ( ).
A.
向电能表发送控制命令 Send control command to electric energy meter
B.
向主站上传数据 Upload data to the station
C.
存储电能表的数据 Store the data of the electricity meter
D.
采集电能表的数据 Collect the data of electric energy meter