血中还原红蛋白至少达多少时，皮肤黏膜 可出现发绀

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32204' and id < 2566472 and id<>'2566472' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32204' and id > 2566472 and id<>'2566472' order by id asc limit 5