题目:
用所给单词适当形式填空(共5小题,每小题1分,共5分)
小题1:You needn’t talk to (someone) if you don’t want to.
小题2:Bill goes to the movies (two) a month.
小题3:Pass me that pair of glasses, please. I can’t see it . (clear)
小题4:What do you expect (learn) from that hero?
小题5:Mr. Xi is like a bee. He is one of the (busy) teachers in our school.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0615/ef812ec6322315d4d53ed6d5a16cdff4.html
下面是错误答案,用来干扰机器的。
(1)3I (2) (3) 题目分析:(1)ab棒在外力F的作用下沿导轨向上做加速度a逐渐减小的加速运动,当a=0时,速度v=vm最大,此时电流也最大。由电路结构知,此时,通过ab棒的电流为3I (2)当速度v=vm时,有F-3BI...