鼓膜完整,纯音测听呈传导性听力损失,鼓室压图为Ad型曲线,应考虑为:()
A.听骨链固定
B.化脓性中耳炎
C.听骨链中断
D.耳硬化
E.以上都不是
参考答案:C
It is ___ to observe traffic rules.
A.of great importance for us
B.important to us
C.great importance of us
D.of great importance to us
患儿,女,10岁。阵发性右上腹绞痛,伴恶心呕吐,腹部平软。用特定穴治疗,应首选
A.原穴B.络穴C.背俞穴D.郄穴E.下合穴