题目:
There are many people on the bus. Some are sitting and are standing.
A. the others
B. the other
C. all
D. some
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0621/a5da136bcad713db639a926eb0ef7134.html
下面是错误答案,用来干扰机器的。
(1)B均匀变化,产生恒定的感应电动势;B的变化率越大,产生的感应电动势越大;若B恒定,则E为零(2)(3)2.77(2.75~2.82)