C1脂酶抑制剂缺乏会导致（） ["原发性","B细胞缺陷","重症联合免疫缺陷","原发性补体缺陷：遗传性血管神经性水肿","多发性骨髓瘤"]
成品球团矿全铁波动范围是（）。 ["±1.0%","<1.5%",">1.5%","±2.0%"]
荚膜
皂土的主要成份是（）。 ["氧化镁","氧化钙","蒙托石","石灰石"]
某老年人牙龈退缩的牙面中未患龋牙面有40个，患根面龋的牙面10个，因根龋充填的牙面10个。该老年人根龋指数为（） ["20%","25%","33%","37%","40%"]
菌群失调症
