口服乳剂放置后由于分散相与分散介质之间 产生密度差，会出现（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24955' and id < 2126940 and id<>'2126940' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24955' and id > 2126940 and id<>'2126940' order by id asc limit 5