直流电压表一般采用（）测量机构。

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='65694' and id < 4241743 and id<>'4241743' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='65694' and id > 4241743 and id<>'4241743' order by id asc limit 5