A:盘古
B:炎帝
C:大禹
D:后羿
电动机的原理是 ____在磁场中受到力的作用,受力方向与 ____和 ____有关系.
下列词语中划线字的注音完全正确的一项是( )
—Do you mind my opening the window to let the fresh air in?—__________. I also would like to breathe in some fresh air.