( )是在组合分配系统中，用于控制灭火剂经管网释放到预定防护区或保护对象的阀门。[单选]

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29214' and id < 2377458 and id<>'2377458' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29214' and id > 2377458 and id<>'2377458' order by id asc limit 5