测定半抗原或药物,常用()。 ["透射免疫比浊法","终点散射比浊法","速率散射比浊法","速率抑制免疫比浊法","免疫胶乳浊度测定法"]
请列举其它的焊接方法。
膈神经阻滞术的穿刺点定位是()。 ["胸锁乳突肌后缘中点","紧靠锁骨上方,相当于环状软骨水平","胸锁乳突肌后缘与颈外静脉交点上1cm处","胸锁乳突肌锁骨头外侧缘,距锁骨2.5~3cm处","胸锁乳突肌锁骨头看缘,乳突下1cm,后1cm处"]
C4横突阻滞术的穿刺点定位是()。 ["胸锁乳突肌后缘中点","紧靠锁骨上方,相当于环状软骨水平","胸锁乳突肌后缘与颈外静脉交点上1cm处","胸锁乳突肌锁骨头外侧缘,距锁骨2.5~3cm处","胸锁乳突肌锁骨头看缘,乳突下1cm,后1cm处"]
女性,20岁,反复发生双下肢红斑、浅表小结节、紫癜与溃疡3周,对称性分布,伴阵发性腹痛。最可能的诊断() ["类风湿性关节炎","混合结缔组织病","风湿性关节炎","重叠结缔组织病","结节性多动脉炎"]
试述远缘杂交的作用