男,38岁。发热2周,胸闷5天。无咳嗽、咳痰、咯血,曾使用“头孢曲松”抗感染治疗无效。查体:T37.8。C,BP140/90mmHg。右下肺呼吸音消失,语音并振减弱。胸部X线片示右下肺大片状高密度增高影,上缘呈外高内低弧形,为明确诊断,应首选的检查是
B
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Simplifiedwordsarecommonlyusedintelexmessagesbecausethechargeforatelexisbasedon().
AccordingtoUCP500,theterms“beginning”ofamonthintheletterofcreditshallbeconstruedas()