一 | Investigators said Friday they found hydraulic fluid leaking from a hose in the landing gear system of a FedEx plane that was forced to make an emergency landing this month in Chattanooga, Tennessee.The National Transportation Safety Board said that investigators also found a “discontinuity” in the wiring of an alternate system for lowering the landing gear.Video captured by emergency responders showed sparks flying after the Boeing 757 touched down on Oct. 4 with the left landing gear not fully extended. The plane ran off the end of the runway, but none of the three crew members were injured.The pilots reported that after taking off from Chattanooga, they got a warning about low fluid level and a lack of pressure in one of the hydraulic systems, and they decided to return to the airport. After getting an alert about the landing gear, the pilots declared an emergency. They did a low fly-by that allowed people in the airport tower to confirm that the left landing gear was not extended. The pilots circled and landed with the crippled gear. They were able to keep the plane going straight but couldn't stop until 830 feet beyond the end of the runway, the NTSB said in a preliminary report. Pilots used a slide to get out of the plane.The NTSB said an examination showed that a hose tied to a component used to activate the landing gear was leaking hydraulic fluid.The NTSB said it is continuing to investigate the incident.。
二 | 有投资者向道明光学（002632.SZ）提问，近期市场有传闻称公司为部分AI手机机型提供散热元器件。结合公司此前“不存在AI手机相关业务”的说明，想请公司厘清一下：公司是否通过上游散热材料的形式，向手机终端厂商供货，其产品可应用于包括AI手机在内的各类智能手机？公司石墨烯散热业务目前的下游客户拓展情况如何？谢谢。 7月21日，公司在互动平台回答表示，公司不存在“AI手机”相关业务，以公司在指定信息披露媒体发布的公告为准，感谢您的理解和关注。
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