下列哪些物质可通过逆向轴浆流动而被运输（      ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25947' and id < 2179993 and id<>'2179993' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25947' and id > 2179993 and id<>'2179993' order by id asc limit 5