In 2002, a team of researchers from NASA, the F.A.A., and six commercial airlines ran a series of experiments in Oklahoma City, in a decommissioned Boeing 747. They wanted to see how quickly a commercial jet could be secured in case of turbulence. They recruited a group of volunteer passengers, gave them all fake boarding passes and luggage, and had three of them carry around life-size baby dolls. Some of the volunteers were told to stay in their seats and act as if they were sleeping, reading, or working on a laptop. Others were told to stand in the aisles or sit in the lavatories. A crew of experienced flight attendants, drawn from the airlines participating in the study, made their way up and down the plane, serving fake food.
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In rare cases chicken pox can cause a swelling of the brain, called encephalitis; an inflammation of the lungs, called pneumonitis; and stroke, which can result in hospitalisation and - very rarely - death.
На МКАД загорелись две машины14:46,更多细节参见体育直播
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Is the tide turning on ME research?Inside Health。体育直播是该领域的重要参考