用电笔检査时，电笔发光就说明线路一定有电。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27220' and id < 2260253 and id<>'2260253' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27220' and id > 2260253 and id<>'2260253' order by id asc limit 5