3\u4e2a12\u6b27\u7684\u7535\u963b\uff0c\u53ef\u4ee5\u6709\u51e0\u79cd\u8fde\u63a5\u65b9\u6cd5

\u4e09\u4e2a\u7535\u963b\u4e32\u8054\uff0c\u603b\u7535\u963b\u4e3a12\u00d73=36\u03a9
\u4e09\u4e2a\u5e76\u8054\uff0c\u603b\u7535\u963b\u4e3a12\u00f73=4\u03a9
\u4e24\u4e2a\u5e76\u8054\u4e0e\u4e00\u4e2a\u4e32\u8054\uff0c\u603b\u7535\u963b\u4e3a12\u00f72+12=18\u03a9
\u4e24\u4e2a\u7535\u963b\u4e32\u8054\u4e0e\u4e00\u4e2a\u7535\u963b\u5e76\u8054\uff0c\u603b\u7535\u963b\u4e3a
(12\u00d72)//12=(24\u00d712)/(12+24)=8\u03a9\u611f\u89c9\u8fd8\u662f\u627e\u4e2a\u4e13\u4e1a\u7684\u95ee\u95ee\u597d\u7684 \u6216\u8005\u5230\u786c\u4e4b\u57ce\u4e0a\u9762\u627e\u627e\u6709\u6ca1\u6709\u8fd9\u4e2a\u578b\u53f7 \u628a\u8d44\u6599\u5f04\u4e0b\u6765\u6162\u6162\u7814\u7a76\u7814\u7a76

A\u3001\u4e09\u4e2a\u7535\u963b\u4e32\u8054\u540e\u7684\u603b\u7535\u963bR=3\u00d76=18\u03a9\uff0c\u6545A\u9519\u8bef\uff1bB\u3001\u4e09\u4e2a\u7535\u963b\u5e76\u8054\u540e\u7684\u603b\u7535\u963b\u4e3aR\uff0c\u52191R\uff1d16+16+16=12\uff0c\u89e3\u5f97R=2\u03a9\uff0c\u6545B\u9519\u8bef\uff1bC\u3001\u4e24\u4e2a\u7535\u963b\u4e32\u8054\u540e\u4e0e\u7b2c\u4e09\u4e2a\u7535\u963b\u5e76\u8054\uff0c\u5219\u603b\u7535\u963b\u4e3a1R=112+16=14\uff0c\u89e3\u5f97R=4\u03a9\uff0c\u6545C\u6b63\u786e\uff1bD\u3001\u4e24\u4e2a\u7535\u963b\u5e76\u8054\u540e\u4e0e\u7b2c\u4e09\u4e2a\u7535\u963b\u4e32\u8054\uff0c\u5219\u603b\u7535\u963b\u4e3aR=6+3=9\u03a9\uff0c\u6545D\u9519\u8bef\uff0e\u6545\u9009\uff1aC