氨茶碱属于（） ["胆碱能M受体阻滞剂","肾上腺素能β受体兴奋剂","肾上腺素能α受体阻滞剂","前列腺素活性抑制剂","以上都不是"]
鉴别急性水肿型胰腺炎与坏死型胰腺炎有价值的实验室检查是（） ["血清淀粉酶","血清脂肪酶","尿淀粉酶","血清胆红素","血清正铁白蛋白"]
下列何种疾病应用喘康速气雾剂（特布他林气雾剂）吸入，可使呼吸困难很快改善（） ["喘息型慢性支气管炎","心源性哮喘","支气管哮喘","急性肺水肿","支气管肺癌"]
对肝硬化诊断有确诊价值的检查是（） ["X线钡餐检查","腹腔镜检查+活检","胃镜检查","腹部B超","腹部CT"]
用糖皮质激素治疗重症哮喘的机制，下列哪项不正确（） ["抑制M胆碱能受体","促进β受体数量","减少组胺形成","抑制炎症反应","降低气道反应性"]
修正系统误差有哪些方法？
