选择电压表时，其内阻（）被测负载的电阻为好。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27214' and id < 2260449 and id<>'2260449' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27214' and id > 2260449 and id<>'2260449' order by id asc limit 5