题干
将下列对话排序。
A. Do you have any black shirts?
B. Size 48. How much is it?
C. That's too expensive for me.
D. Yes, I want a brown shirt.
E. Sorry, we don't have any brown shirts.
F. Can I help you?
G. They're 85 yuan.
H. Yes, we do. What size do you want?
F D ____ ____ ____ ____ ____ ____
答案(点此获取答案解析）
E,A,H,B,G,C
的不同带电粒子，其中带电粒子1从A点飞出磁场，带电粒子2从B点飞出磁场，不考虑带电粒子的重力．则（ ）
