瑙d竴鍏冧竴娆℃柟绋 鍥炵瓟11.闅忛殢涓庡窞宸炵害濂?灏忔椂鍚庡埌宸炲窞瀹跺幓鐜?浠栭獞杞︿粠瀹跺嚭鍙戝崐灏忔椂鍚庡彂鐜版椂闂翠笉澶熶簡渚垮皢閫熷害鎻愰珮鍒板師鏉ョ殑2鍊?鍗
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![瑙d竴鍏冧竴娆℃柟绋 鍥炵瓟11.闅忛殢涓庡窞宸炵害濂?灏忔椂鍚庡埌宸炲窞瀹跺幓鐜?浠栭獞杞︿粠瀹跺嚭鍙戝崐灏忔椂鍚庡彂鐜版椂闂翠笉澶熶簡渚垮皢閫熷害鎻愰珮鍒板師鏉ョ殑2鍊?鍗](/uploads/image/z/417581-53-1.jpg?t=%E7%91%99%EF%BD%84%E7%AB%B4%E9%8D%8F%E5%86%A7%E7%AB%B4%E5%A8%86%E2%84%83%E6%9F%9F%E7%BB%8B+%E9%8D%A5%E7%82%B5%E7%93%9F11.%E9%97%85%E5%BF%9B%E6%AE%A2%E6%B6%93%E5%BA%A1%E7%AA%9E%E5%AE%B8%E7%82%B5%E5%AE%B3%E6%BF%82%3F%E7%81%8F%E5%BF%94%E6%A4%82%E9%8D%9A%E5%BA%A1%E5%9F%8C%E5%AE%B8%E7%82%B2%E7%AA%9E%E7%80%B9%E8%B7%BA%E5%B9%93%E9%90%9C%3F%7F%E6%B5%A0%E6%A0%AD%E7%8D%9E%E6%9D%9E%EF%B8%BF%E7%B2%A0%E7%80%B9%E8%B7%BA%E5%9A%AD%E9%8D%99%E6%88%9D%E5%B4%90%E7%81%8F%E5%BF%94%E6%A4%82%E9%8D%9A%E5%BA%A1%E5%BD%82%E9%90%9C%E7%89%88%E6%A4%82%E9%97%82%E7%BF%A0%E7%AC%89%E6%BE%B6%E7%86%B6%E7%B0%A1%E6%B8%9A%E5%9E%AE%E7%9A%A2%E9%96%AB%E7%86%B7%E5%AE%B3%E9%8E%BB%E6%84%B0%E7%8F%AE%E9%8D%92%E6%9D%BF%E5%B8%AB%E9%8F%89%E3%83%A7%E6%AE%912%E9%8D%8A%3F%E9%8D%97)
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瑙d竴鍏冧竴娆℃柟绋 鍥炵瓟11.闅忛殢涓庡窞宸炵害濂?灏忔椂鍚庡埌宸炲窞瀹跺幓鐜?浠栭獞杞︿粠瀹跺嚭鍙戝崐灏忔椂鍚庡彂鐜版椂闂翠笉澶熶簡渚垮皢閫熷害鎻愰珮鍒板師鏉ョ殑2鍊?鍗
瑙d竴鍏冧竴娆℃柟绋 鍥炵瓟
11.闅忛殢涓庡窞宸炵害濂?灏忔椂鍚庡埌宸炲窞瀹跺幓鐜?浠栭獞杞︿粠瀹跺嚭鍙戝崐灏忔椂鍚庡彂鐜版椂闂翠笉澶熶簡渚垮皢閫熷害鎻愰珮鍒板師鏉ョ殑2鍊?鍗婂皬鏃跺悗鍑嗘椂鍒拌揪宸炲窞鐨勫?.宸茬煡浠栦滑瀹剁浉璺?0鍗冪背,姹傞殢闅忓師鏉ョ殑楠戣溅閫熷害.(鐢诲嚭璺?▼绀烘剰鍥?璁炬湭鐭ユ暟鍒楁柟绋嬪苟浼拌?鐨勮В)
瑙d竴鍏冧竴娆℃柟绋 鍥炵瓟11.闅忛殢涓庡窞宸炵害濂?灏忔椂鍚庡埌宸炲窞瀹跺幓鐜?浠栭獞杞︿粠瀹跺嚭鍙戝崐灏忔椂鍚庡彂鐜版椂闂翠笉澶熶簡渚垮皢閫熷害鎻愰珮鍒板師鏉ョ殑2鍊?鍗
设原来速度为X ,则式子为 0.5X+2*0.5X=30 X=20千米