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='69307' and id < 4487224 and id<>'4487224' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69307' and id > 4487224 and id<>'4487224' order by id asc limit 5