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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.，更多细节参见搜狗输入法下载
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“破除地方保护和市场分割，要素资源才能在更大范围内自由流动。”上海实业（集团）有限公司党委书记、董事长冷伟青委员建议，要发挥龙头企业“链主”作用，搭建开放式中试平台，让不同区域、不同规模的企业能相互“切磋”，通过设备租赁、研发协同、规则对接，降低创新成本，让中小企业在更大市场中显露身手。