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把灯泡剩下的铁皮用改锥撬起一点,使之与灯座分离开一些,把尖嘴钳伸进去夹住,就能拧动了。或者通电后把食指放进去,融化后冷却,再转动食指...

eglington (eglington)
(#334016@0)
2002-1-14 -04:00
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Back To Topic: 初级问题:加拿大100W灯泡的电阻是多少?1000W电炉丝的电阻是多少?(我用数字万用表测出来的是灯泡11欧,电炉45欧,好象不对!看来我是不会用,谁能指点,谢了)

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