下列盐类溶于水后不具备净水作用的是（　　）

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SQL Error: select id,body,options from ***_enewstiku_ where sourceid='22285' and id < 1952160 and id<>'1952160' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='22285' and id > 1952160 and id<>'1952160' order by id asc limit 5