开关在断开电路时，不需要考虑电弧熄灭与否。(    )

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69521' and id < 4504075 and id<>'4504075' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69521' and id > 4504075 and id<>'4504075' order by id asc limit 5