—般把能够使悬浮于其中的（ )保持正常形态和大小的溶液称为等张溶液，如0. 85%的氯化钠溶液为等张溶液

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30847' and id < 2484402 and id<>'2484402' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30847' and id > 2484402 and id<>'2484402' order by id asc limit 5