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在什么情况下mv命令的作用是换名在什么情况下产生文件的移动试分别举例说明。
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A3/A4型题男性，55岁，反复不规则胃胀痛3年，胃镜诊断为萎缩性胃窦炎。 临床疑有胃炎引起的上消化道出血，为确诊，合适的诊断方法是（）.
A3/A4型题女性，56岁，诊断肺心病3年，2d前受凉后发热、咳嗽，咳痰加重，咳黄痰，呼吸困难不能平卧。查体明显发绀，颈静脉怒张，双肺广泛散在干湿性啰音，心率110/min，三尖瓣区可闻及收缩期杂音，肝肋下3cm，下肢水肿。 该患者最可能发生的酸碱平衡失调是（）.
2002年1月初，杭州游客王某等8人参加由浙江某旅行社组团的“香港四日游”并签订了旅游合同。定于2月18日赴港，每人交团费3000元。2月13日该旅行社的有关负责人为客人开了行前说明会。2月14日该旅行社电话通知客人出团时间推迟到2月19日，且每人须增加900元的团费，原因是正值春节期间香港的酒店突然涨价。王某等因为要在香港与某公司约定洽谈生意，处于无奈只好接受了推迟行程和增加团费。2月17日，旅行社突然接到港方单方面毁约的通知，十分着急，立即要求经办人员马上通知王某等人。由于经办人员忘记通知，到19日上午，当王某等8人赶到约定的集合地点时，却不见旅行社的接待人员，客人十分气愤，立即向省质监所和市工商局投诉，认为该旅行社有欺诈和违约行为，损害了他们的合法权益，强烈要求该旅行社登报赔礼道歉，退还全部预付团款、赔偿全部团款一倍的精神损失费及王某等计划在香港签订购货合同未果而造成的经济损失10万元。而该旅行社则说旅游团未成行是因为港方于2月17日单方面毁约，取消该旅游团的行程计划造成的。据此，该旅行社认为客人投诉旅行社有欺诈行为的提法不能成立，责任应在港方，因而拒绝王某的赔偿要求。请问： (1)游客王某等提出的投诉要求哪些是不正当的为什么 (2)该旅行社是否有欺诈行为是否应承担违约责任是否可拒绝客人的赔偿要求为什么
The favorite food in the United States is hamburger. The favorite place to buy a hamburger is a fast food restaurant. At a fast food restaurant, people order their food, wait a few minutes, and carry it to their tables themselves. People also take their food out of the restaurant and eat it in their cars or in their homes. At some fast food restaurants, people can order their food, pay for it and pick it up without leaving their cars. There are many kinds of fast food restaurants in the United States. The greatest in number sell hamburgers, French fries and so on. They are popular food among Americans. Besides, Italian food, chicken, seafood and ice-cream are very popular, too. The idea of a fast food restaurant is so popular that nearly every kind of food can be found in one. Fast food restaurants are popular because they reflect American life style. Customers can wear any type of dress when they go to a fast food place. Second, they are fast. People who are busy do not want to spend time preparing their own food or waiting while someone prepares it. In fast food restaurants the food is usually ready before the customer even orders it. Finally most food in a fast food restaurant is not expensive. Therefore people are able to buy and eat at a fast food restaurant often, while they may not be able to go to a more expensive restaurant very often. Hamburgers and French fries can be got at ______ the fast food restaurants.
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