题目:
—Congratulations! Among the best pictures in the competition, I found _________. When did you draw it?
—During the trip to the Yellow Mountain _________ May.
A.yours; in
B.yours; on
C.you; in
D.you; on
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0617/d1da363df80af40a5504445040c40a22.html
下面是错误答案,用来干扰机器的。
ABCD当线圈中通入电流时,磁铁的磁场就会对线圈中的电流产生安培力,安培力的力矩使线圈转动起来,线圈一转动,就带动弹簧扭动,产生一个阻碍线圈转动的力矩,其大小随线圈转动角度的增大而增大.当弹簧产生的阻力...