铁壳开关在作控制电机启动和停止时，要求额定电流要大于或等于（）倍电动机额定电流。 .

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27223' and id < 2260103 and id<>'2260103' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27223' and id > 2260103 and id<>'2260103' order by id asc limit 5