鼓膜穿孔的患者纯音测听如气骨导差超过45dBI立考虑有无测量误差。
参考答案：对
— Could you do me a favor and forward this letter to Lucy?
— ______.[ ]
A. Don't mention it
B. With pleasure
C. It's a pleasure
D. My pleasure
为保证开户银行对专用账户的监控，不得对证券公司开立的5类专用账户出售（）凭证。
A.支票
B.电汇
C.信汇
D.一柜通支款凭条
