A study published in the New England Journal of Medicine estimated that there are an average of 30 in-flight medical emergencies on U.S. flights every day.
发表在《新英格兰医学杂志》上的一项研究估计，美国航班上每天平均会发生30起飞行中医疗紧急事件。
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In the study, published in the New England Journal of Medicine, researchers at Boeing commercial Airplanes simulated conditions on board a 20-hour commercial flight in a group of about 500 volunteers.
Duties: To certify, survey & inspect operators and airman engaged in civil aviation activities in the field of flight operation and civil aviation medicine; to handle the relevant illegal acts.