[名词解释] 质粒

工具酶 喉部疾病引起吞咽困难的有() ["A．食管癌","B．急性会厌炎","C．喉结核","D．喉神经麻痹","E．环杓关节炎"] 垂体功能低下是做_______检查的指征() ["A．甲状腺吸I试验","B．T抑制试验","C．过氯酸盐释放试验","D．TRH兴奋试验","E．以上都不是"] 下列疾病可引起声嘶为() ["A．声带小结","B．喉癌","C．喉结核","D．声带麻痹","E．癔症失声"] 芽胞 质粒