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呼吸衰竭的血气诊断标准是
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Smith Sports EquipmentP.O.Box 1014Tulsa, Oklahoma 74109—1014Phone < 918 > 555—1642Fax < 918 > 555—0170September 21, 2002Mr. Michael Trigg17 Westwood PlaceQuincy, MA 02171Dear Mr. Trigg,Thank you for writing to us on September 15th about the trouble you experienced with our model 191 fishing reel (线轴) and for sending the reel to us for examination. We are sorry to hear about the difficulties you had with the release button.We have examined your reel and found the problem. It seems that a retaining pin (针) on the button spring was pushed into the side of the reel casing (包装), thereby making it inoperable (不可操作的). The retaining pin is a vital yet delicate part of your reel. In order to make it function properly, it must be pushed gently. Since the pin was damaged by misuse, we are not able to refund (退还) your purchase price.We will be pleased, however, to repair your reel for ＄ 9.98 and return it to you for more hours of fishing pleasure. Please let us know your decision.I look forward to hearing from you soon.Respectfully,Ralph Montoya,Manager of Customer Relations Department When did Mr. Trigg write to the manager about the reel he bought On（）
支气管哮喘持续状态时祛痰方法是
Mary Qi 和她的丈夫Smith先生在北京观光期间，受到了张女士的热情接待。张女士陪同她们参观了长城、故宫、颐和园等地，给Smith夫妇俩留下了难忘的印象。Smith夫妇给张女士写了一封感谢信并转致对她全家的问候。Words for Reference:故宫: the Imperial Palace颐和园: the Summer Palace
女性患者，68岁，慢性支气管炎、肺气肿12年。2d前剧烈咳嗽后，突然左侧胸痛伴呼吸困难，不能平卧，可能的诊断是
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