<strong>下列哪种疾病引起的呼吸衰竭,动脉血CO<img src="http://192.168.1.101:8000/ks/ImgDir_SJ_ZYYJ/2.gif" alt="" />分压(PaCO<img src="http://192.168.1.101:8000/ks/ImgDir_SJ_ZYYJ/2.gif" alt="" />)常不增高</strong>