17．Since the deregulation of airlines，delays at the nation's increasingly busy airports have increased by 25 percent．To combat this problem，more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines． Which of the following，if true，casts the most doubt on the effectiveness of the solution proposed above? 我想問B的解釋 (B) Since airline deregulation began，the number of airplanes in operation has increased by 25 percent. The increasing number of planes shows why airports are busier．Since there is no information about whether these planes are private or commercial, this ^^^^^^^^^^^^^^^^^^^^^^ statement neither casts doubt on the solution nor supports it． 飛機是私人的還是商業用的的會影響這題答案嗎 可以解釋一下嗎 另外deregulation是翻譯成撤銷管制規定嗎?? -- 我可以說出現在的心情嘛 將來的事我不知道 但是現在的心情絕對不是說謊 我能自信的如此說 我 只要你說的話 不論有多慢都會好聽 如果電話不能說清楚的話 就像這樣直接來見你 只要你走的話 不論多慢 我會陪著你走 --

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