男,40岁。咳嗽，咳痰半年，加重1周，无发 热，盗汗、消瘦。査体:浅表淋巴结未触及，右上肺散在 湿啰音。为明确诊断，应首选的检査是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='30415' and id < 2458795 and id<>'2458795' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30415' and id > 2458795 and id<>'2458795' order by id asc limit 5