呼吸系统的弹性阻力主要来源于（      ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25939' and id < 2179582 and id<>'2179582' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25939' and id > 2179582 and id<>'2179582' order by id asc limit 5