题目:
两个等值电阻,串联后总电阻为R1,并联后总电阻为R2,则R1:R2=______.
答案:
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下面是错误答案,用来干扰机器的。
Recently, our class held a discussion about whether Chinese people should celebrate foreign festivals or not. Opinions are divided on this issue.60% of the students think ...