传导性耳聋时纯音听力曲线的主要表现为（） A.气导低频下降 B.

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问题单项选择题 A1/A2型题

传导性耳聋时纯音听力曲线的主要表现为（）

A.气导低频下降

B.骨导高频下降

C.气导高频下降

D.气、骨导高频均下降

E.骨导低频下降

答案

参考答案：A

单项选择题

Speaker A: Can I open a checking account hereSpeaker B: ______

A．May I ask why you want to open a checking account

B．I'm very sorry, but it's not my business.

C．By all means. But you have to deposit enough money before you can write out your checks.

D．If I were you, I would open a current account.

填空题

铁路卸油栈桥应每隔（）配备2具（）kg手提式干粉型灭火器和（）块灭火毯，并且灭火毯配置总量不能少于（）块。