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通电后把食指放进去,融化后冷却,再转动食指... 拔了就不能融化了,估计如果没拔的话,她剪的时候也把保险丝烧了,所以拔没拔都不用再拔了,习习。

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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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