【单选题】【消耗次数：1】
内置和外置法的划分是以移植物与（）的相互位置为参考标准
①
残余鼓膜纤维层和纤维鼓环
②
锤骨柄
③
鼓膜上皮层
④
鼓膜粘膜层
参考答案：
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相关题目
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关于鼓膜说法错误的是
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位于外耳道与中耳鼓室之间
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呈椭圆形的半透明膜
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中央部略向内凹陷称鼓膜脐
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分为上1/3松弛部和下2/3紧张部
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鼓膜脐前下方有反射光锥
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鼓膜穿孔干燥无鼓室病变
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鼓膜穿孔不稳定
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咽鼓管发育成熟
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急性化脓性中耳炎患者，鼓膜穿孔后停用2%酚甘油滴耳，是因为酚甘油（ ）。
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