如图所示电路处于谐振状态时，电流表A的读数应是（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69470' and id < 4499521 and id<>'4499521' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69470' and id > 4499521 and id<>'4499521' order by id asc limit 5