磁感应强度与垂直于磁感应强度的某一面积的乘积叫通过该面积的(),单位韦伯(Wb)。
参考答案:磁通量
简述教育的生产性功能。
It doesn’t _______ if you are late to my party. I just want you to come.
A.take me by surprise
B.make sense
C.take a chance
D.make a difference