图示电路中开关S断开时A、C相电流表读数为A,B相电流表读数为5A,则开关S闭合后，三个电流表的读数均为（   ）。 

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id < 4493021 and id<>'4493021' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69389' and id > 4493021 and id<>'4493021' order by id asc limit 5