I think we will _______ them and we will _______ the match.
A:defeat; win
B:win; defeat
C:defeat; defeat
D:win; win
以下关于电话交换机的说法中,正确的是( )
①雪的厚度H ②脚印的面积S ③脚印踩下的深度L ④踩下后形成的冰的厚度h
雪的密度的表达式为:____.