当毛细血管血液的还原血红蛋白超过下列哪项数值时，皮肤黏膜即可出现发绀

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26455' and id < 2209322 and id<>'2209322' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26455' and id > 2209322 and id<>'2209322' order by id asc limit 5