圆锥销定位用于经常拆卸的地方。
参考答案:对
— Would you like some food? — _________.[ ]
A. Yes, please.
B. Yes, thank you.
C. No, I don't.
D. No, I don't want food.
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性()。
A.A
B.B
C.C
D.D