耳轮深入耳甲的部分称之为（）
A.耳轮尾
B.耳轮结节
C.耳轮脚
D.对耳轮体
E.对耳轮上脚
参考答案：C
— Can I have your library card, please?
— _ [ ]
A. Yes. Here you are.
B. No, you can't.
C. I think so.
D. Excuse. me.
要使A、B两个电磁铁互相吸引，电磁铁A如何绕线。
