共有人对共有关系的性质发生争议无法査明是按份共有还是共同共有时，应当认定其是（ ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26674' and id < 2220486 and id<>'2220486' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26674' and id > 2220486 and id<>'2220486' order by id asc limit 5