正常血清中，补体含量最高的成分是() ["A．C1","B．C2","C．C3","D．C4","E．C5"]
简述将主模上设计和确定的义齿共同就位道准确转移到复制的耐高温模型上的方法?
PEG比浊法测定非抗原特异性循环免疫复合物时，其敏感度可达() ["A．5mg/LHANHG","B．10mg/LHAHG","C．15mg/LHAHG","D．20mg/LHAHG","E．25mg/LHAHG"]
补体蛋白约占人体血清总蛋白的() ["A．2%","B．5%","C．10%","D．15%","E．25%"]
关于补体的理化特点，下列不正确的是() ["A．补体的性质不稳定","B．不受各种理化因素的影响","C．在0～10℃条件下活性只能保持3～4天","D．加热56℃30min灭活","E．标本保存应置于-20℃以下"]
预防粘砂可采取哪些措施?
