依据中国药典，古蔡法检查砷盐，加入碘化钾的主要作用是（） ["将五价的砷还原为砷化氢","将三价的砷还原为砷化氢","将五价的砷还原为三价的砷","将氯化锡还原为氯化亚锡","将硫还原为硫化氢"]
患者男性，50岁，因“气喘、Ⅰ型呼吸衰竭伴咳嗽、咳痰”来诊。有慢性哮喘史。首选药物是（） ["可待因","沙丁胺醇","色甘酸钠","糖皮质激素","青霉素","头孢甲肟"]
关于结核分支杆菌生物学特性的叙述错误的是（）。 ["专性需氧","抗酸染色阳性","培养的菌落呈颗粒结节状","耐盐性强","耐干燥"]
氯化物检查法中，适宜的酸度是（） ["50ml中加2ml稀硝酸","50ml中加5ml稀硝酸","50ml中加10ml稀硝酸","50ml中加5ml硝酸","50ml中加10ml硝酸"]
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