具有一定内阻的电压表，测出实际电源的端电压为6V，则该电源的开路电压比6V（   ）。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id < 4499900 and id<>'4499900' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69471' and id > 4499900 and id<>'4499900' order by id asc limit 5