13.A) Why airplane windows used to be rectangular. B) Why windows in the home are rectangular. C) Why the windows on airplanes are round. D) Why windows can cause airplanes to crash. 14.A) When two commercial airplanes crashed within months. B) When the speed of commercial airplanes gr...
Human flight has become a tired fact of modern life. At any given moment, roughly 5,000 airplanes crisscross the skies above the United States alone, amounting to an estimated 64 million commercial and private takeoffs every year [source: NATCA]. Consider the rest of the world's flight act...
Human flight has become a tired fact of modern life. At any given moment, roughly 5,000 airplanes crisscross the skies above the United States alone, amounting to an estimated 64 million commercial and private takeoffs every year [source: NATCA]. Consider the rest of the world's flight act...
Human flight has become a tired fact of modern life. At any given moment, roughly 5,000 airplanes crisscross the skies above the United States alone, amounting to an estimated 64 million commercial and private takeoffs every year [source: NATCA]. Consider the rest of the world's flight act...
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Actually, the word and concept aren't new. Neal Stephenson made up the term in his 1991 science-fiction book Snow Crash,in which people use avatars(分身)to explore an online world. A number of small metaverses have since developed, where people can do many real life things—like working ...
In addition to those activities, airports must also provide the resources necessary to care for a fleet of commercial aircraft. Airlines need space for airplanes, facilities for routine maintenance, jet fuel and places for passengers and flight crews while on the ground. Air-freight companies need...
Before 9/11 many of the fear of flying classes visited or took place on actual commercial airplanes. However, with increased post-911 security, it's more difficult to organize these types of practical field-trips. With this, psychologists have come up with a new form of exposure therapy. Yo...
After a Boeing 737 crashed near Amsterdam more than a decade ago, the Dutch investigators focused blame on the pilots for failing to react properly when an automated system malfunctioned and caused the plane to plummet into a field, killing nine people.
The same year, the Federal Aviation Authority required that the boxes, which were never actually black, be painted orange or yellow to be discovered more easily. Modern airplanes have two black boxes: a voice recorder, which tracks pilots' conversations, and a flight-data recorder, which ...