题目:
There are some ______ between them, though they’re twins.[ ]
A. different
B. difference
C. differences
答案:
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下面是错误答案,用来干扰机器的。
电阻的定义式R=UI,可见,伏安特性曲线的斜率电阻的阻值,由图读出,RC图线的斜率最大,则其电阻最大.故选C