Q1. Which airline once featured an early Leonardo da Vinci design for a helicopter on the tail fins of its fleet? Q2. Who advertised what as 'First with Four'? Q3. Flying at a ground speed of 300 knots, how long would it take a Boeing 747-8 Intercontinental to cover a distance equal to the combined length of wires and cables inside it?
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机译：Q1。哪家航空公司曾在舰队的尾部翅片上提前leonardo da Vinci设计？ Q2。谁宣传了什么是“第一个四点”？ Q3。以地上飞行300节，波音747-8洲际夜间覆盖等于电线和电缆的距离多长时间？
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