患者男，43岁，某热电厂电工。2h前突感胸闷，呼吸困难，喘息不止，急送医院。既往体健，无哮喘史，家族中无过敏体质患者或支气管哮喘患者。入院查体：一般情况尚可，口唇发绀，血压为16/10.75kPa，双肺均闻及哮鸣音，心率80次/min，律齐。胸部X射线透视心肺未见异常。追问病史，患者1年前开始从事供热管道安装。当焊接供热水管时，接触聚氨酯（MDI）保温层，致使其中MDI有时燃烧或气化。每日接触1次或数次，每次10～60min。
为明确诊断，最应进行的检查是（）
A.通气功能检测
B.特异性变应原支气管激发试验
C.连续性呼气峰值流速测定
D.血气分析
E.抗原皮肤试验
参考答案：B
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| In 1989 an 8.2 earthquake almost flattened Los Angeles, killing over 30,000 people in less than four minutes. A father rushed to where his son was 1 to be, only to discover that the building was flattened. But he remembered the 2 he had made his son: "I'll always be there for you!" Tears began to fill his eyes. Although it looked 3 , he remembered his words. 4 his son's classroom would be in the back right corner of the building, he rushed there and started 5 . Other parents tried to pull him off what was left of the school, saying " It's too late! They're all dead! You can't 6 !" To each he 7 : "Are you going to help me?" And then he went back to his digging. The fire fighter 8 and tried to pull him away: "Fires are breaking out, explosions are happening everywhere. You're 9 ."To which this loving, 10 father asked:"Are you going to help me?" He went on 11 he needed to know,"Is my boy alive or is he dead?" He dug for eight hours…l2 hours…36 hours…then, in the 38th hours, he pulled back a large stone and 12 his son. He 13 : "ARMAND!"He heard back:" Dad?It's me, Dad! I told the other kids not to 14 . I told them that if you were 15 , you'd save me and when you saved me, they'd be saved. You 16 , no matter what happens, I'll always be there for you!" "What's going on in there?" the father asked. "There are l4 of us 17 out of 33, Dad. We're scared but 18 you're here. When the building collapsed, it 19 a triang1e (三角形), and it saved us." " 20 , boy!" "Let the other kids out first, because I know you'll get me! I know you'll always be there for me!" | ||||
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