一条直线型街道的A、B两盏路灯之间的距离为120米,由于光线较暗,想在中间再随意安装两盏路灯C、D,一条直线型街道的A、B两盏路灯之间的距离为120米,由于光线较暗,想在中间再随意安装两
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![一条直线型街道的A、B两盏路灯之间的距离为120米,由于光线较暗,想在中间再随意安装两盏路灯C、D,一条直线型街道的A、B两盏路灯之间的距离为120米,由于光线较暗,想在中间再随意安装两](/uploads/image/z/14737863-39-3.jpg?t=%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%E5%9E%8B%E8%A1%97%E9%81%93%E7%9A%84A%E3%80%81B%E4%B8%A4%E7%9B%8F%E8%B7%AF%E7%81%AF%E4%B9%8B%E9%97%B4%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BA120%E7%B1%B3%2C%E7%94%B1%E4%BA%8E%E5%85%89%E7%BA%BF%E8%BE%83%E6%9A%97%2C%E6%83%B3%E5%9C%A8%E4%B8%AD%E9%97%B4%E5%86%8D%E9%9A%8F%E6%84%8F%E5%AE%89%E8%A3%85%E4%B8%A4%E7%9B%8F%E8%B7%AF%E7%81%AFC%E3%80%81D%2C%E4%B8%80%E6%9D%A1%E7%9B%B4%E7%BA%BF%E5%9E%8B%E8%A1%97%E9%81%93%E7%9A%84A%E3%80%81B%E4%B8%A4%E7%9B%8F%E8%B7%AF%E7%81%AF%E4%B9%8B%E9%97%B4%E7%9A%84%E8%B7%9D%E7%A6%BB%E4%B8%BA120%E7%B1%B3%EF%BC%8C%E7%94%B1%E4%BA%8E%E5%85%89%E7%BA%BF%E8%BE%83%E6%9A%97%EF%BC%8C%E6%83%B3%E5%9C%A8%E4%B8%AD%E9%97%B4%E5%86%8D%E9%9A%8F%E6%84%8F%E5%AE%89%E8%A3%85%E4%B8%A4)
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