1) Which department is he in?
他是哪一个系的？
2) Which is mine?
哪一个是我的？
3) Which is your family name?
哪一个是你的姓?
4) Not any one person.
不是哪一个。
5) Which one is electrode?
哪一个是电极。
6) Which is the coin returned lever?
哪一个是退币口?
补充资料：哪个
1.亦作"那个"。 2.谁;哪一个。用于反问的语气，意在否定。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条