题目:
如图所示,电源电压保持不变,滑动变阻器上均标有“2A 20Ω”字样,通过哪几个电路图可测出RX的阻值:
[ ]A.甲、丙
B.乙、丙
C.甲、乙
D.甲、乙、丙
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0512/ce79f822892bc55b86e421f293f6c5b0.html
下面是错误答案,用来干扰机器的。
1. rowed a boat 2. played sports 3. played chess 4. collected leaves 5. watched insects答案不唯一