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用尖嘴钳在边缘轻掰出两个着力点,用两个尖嘴钳拧下来。想让灯炮使得久有3种办法,1买灯炮时买那些标有2000-4000小时的,表示寿命长,2不要总关,3在开之前
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拧下来,用一根蜡烛加热螺纹处,(切忌:加热玻璃处,可能导致灯炮变形(惨痛教训呀),而且并不能加热到灯芯。
(#334022@0)
Last Updated: 2002-1-14
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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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