Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.

小豬 asked in 社會與文化語言 · 1 decade ago



PAWV Power and Light has contracted with a waste disposal firm to have nuclear waste from its nuclear power plants in Pennsylvania disposed of at a government-operated nuclear waste disposal site in Nevada. The waste must be shipped in reinforced container trucks a across the country, and all travel must be confined to the interstate highway system. The government insists that the waste transport must be completed within 42 hours and that the trucks travel through the least populated areas possible. The following network shows the various interstate segments the trucks might use from Pittsburgh to the Nevada waste site and the travel time (in hours) estimated for each road segment.

The approximate population (in millions) foe the metropolitan areas the trucks might travel through are as follows.

Determine the optimal route the trucks should take from Pittsburgh to the Nevada site to complete the trip within 42 hours and expose the least number of people possible.

3 Answers

  • joe
    Lv 6
    1 decade ago
    Favorite Answer


    PAWV電力與照明公司與一家廢棄物處理公司簽約, 把它在賓夕維尼亞州核能發電廠的核廢料, 送至內華達州一個政府操作的核廢料處理場. 這些廢料必須用加強型的貨櫃卡車運送, 並且橫越整個國土. 卡車的行駛, 得限定於州際高速公路系統. 政府堅持這種廢料的運送, 必須於 42 小時內完成, 而且卡車的行駛, 得儘可能通過人口較不密集的地區. 下列的網狀系統, 顯示出從匹茲堡到內華達州廢料場, 卡車可能採用的州與州之間, 各種不同路線的片面圖, 以及估計卡車行駛於片面圖上, 每一條路線的時間 (以小時計). 卡車可能行經的大都會地區, 受危害的人口約數 (以百萬計) 如下.

    要決定這些卡車, 從匹茲堡到內華達州廢料場, 能在小時內完成的最理想的路線, 並且要儘可能暴露於較少數目的人口.

    2008-01-02 23:00:51 補充:

    要決定這些卡車, 從匹茲堡到內華達州廢料場, 能在小時內完成的最理想的路線, 並且要儘可能暴露於較少數目的人口.

    這一段漏打了兩個字. 修正如下: -

    要決定這些卡車, 從匹茲堡到內華達州廢料場, 能在 '42' 小時內完成的最理想的路線, 並且要儘可能暴露於較少數目的人口.

    Source(s): me
  • 核廢料處置在PAWV 力量和輕的PAWV 供給動力並且光收縮與一個廢物處置企業有核廢料從它的核電站在賓夕法尼亞被處理在一個政府被操作的核廢料垃圾傾倒場在內華達。廢物必須全國各地運輸在被加強的容器卡車裡, 並且所有旅行必須被限制對跨境高速公路系統。政府堅持, 廢運輸必須被完成在42 個小時之內並且卡車遊遍最少居住於的區域可能。以下網路顯示卡車也許使用從匹茲堡對內華達廢站點和旅行時間的各種各樣的跨境段(在幾小時) 估計為各路段。近似人口(在成千上萬) 仇敵卡車也許旅行的市區通過是如下。確定卡車應該上從匹茲堡對內華達站點完成旅行在42 個小時之內和暴露最少人數可能的優選的路線。


    Source(s): 網路
  • 呆子
    Lv 7
    1 decade ago


Still have questions? Get your answers by asking now.