"电接点压力表是一种既可以指示压力,又可在压力超出上下限规定范围时发出报警信号的压力表。"

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='33544' and id < 2678840 and id<>'2678840' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='33544' and id > 2678840 and id<>'2678840' order by id asc limit 5