美国航空业在发展中最先要确定的是:做客机还是做货机?各大航空公司不约而同地回答:“两个都做,因为客舱下面还有剩余的空间。”所以,美国的各大航空公司都客货兼营。航空公司接下来要决定到达地的问题:飞商务城市还是度假胜地?这次不约而同的说法是:“两种都飞,各大航空公司休斯敦和檀香山都要占领。” In the development of the U.S. aviation industry, the first thing to be determined is whether to be a passenger aircraft or a cargo aircraft. The major airlines responded spontaneously: “Both do, because there is still space left under the passenger compartment.” Therefore, Large airlines are both passenger and cargo run. The airline then decided to arrive at the problem: fly business city or resort? The unanimous statement is: “Both fly, the major airlines Houston and Honolulu have to occupy. ”