在呼吸功能衰竭时，应适当增加下列哪种营养素在膳食中的比例

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30446' and id < 2459902 and id<>'2459902' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30446' and id > 2459902 and id<>'2459902' order by id asc limit 5