变压器的电源电压一般不得超过额定电压的（）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='32654' and id < 2596242 and id<>'2596242' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32654' and id > 2596242 and id<>'2596242' order by id asc limit 5