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[单选题]
男34岁,2天前着凉后发热.体温38.9℃,伴呼吸困难,咳嗽.咳少量黄痰,腹泻两次。自服“先锋霉素”无效。入院查体:嗜睡,口唇轻度发绀,脉搏100次/分,呼吸28次/分,双肺叩清音,双下肺可闻及湿哕音,心律整,腹(-),中性87%,血气分析:pH7.35,PaO257mmHg,PaCO231mmHg,胸部X线片示:左上肺前段、左下肺及右上肺前段、右中肺见斑片状阴影。最可能的诊断是()
A.军团菌肺炎
B.金黄色葡萄球菌肺炎
C.ARDS
D.肺栓塞
E.支原体肺炎
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
A、军团菌肺炎
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)