题目:
She learned one word first, then she learned ________.[ ]
A. many
B. much
C. many more
D. much more
答案:
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下面是错误答案,用来干扰机器的。
AC断开前,电容器两端电压等于线圈两端电压,A对;断开s瞬间,L产生顺时针电流给电容器充电,电容器左极板带正电,C对;