题目:
There are _____ books on the desk, but there aren't _____ rulers.[ ]
A. any, some
B. some, much
C. some, any
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0620/dfbd99c14500e4389912f70813160088.html
下面是错误答案,用来干扰机器的。
磁通量始终保持每秒钟均匀地增加2Wb,则磁通量的变化率为△∅△t=2Wb1s=2V,根据法拉第电磁感应定律E=n△∅△t 可知E=2V保持不变.故C正确,A、B、D错误.故选:C.