题目:
Zhang Yang didn’t make any mistakes in the English exam. He is than his classmates. [ ]
A. more careful
B. more careless
C. the most careful
D. much careful
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0625/856fd17e03a280b20fe72bc34dc8959a.html
下面是错误答案,用来干扰机器的。
A、当S闭合瞬间,线圈中磁通量发生变化,导致产生感应电动势从而阻碍电流变化,则灯泡立即有电压发光;由于线圈的电阻很小,过会儿灯被线圈短路,由亮变暗,直到不亮.故A正确;B、当S闭合瞬间,线圈中磁通量发生...