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超声成像过程中，下列哪种脉冲长度对高分辨力而言是最重要的？（ ）
如果需要把s="It，is，me"按照"，"分解，并赋给新的变量s1，下列语句正确的是（）
Practice 4 The Olympic Games are an international multi-sport event subdivided into summer and winter games. They are each held every four years. Until 1992, they were both held in the same year. Since then, they have been separated two years apart. There are more than 20 Summer Olympics sports, including swimming, basketball, soccer, gymnastics, boxing, weight-lifting, yachting, cycling and equestrian events. Skiing, ice-skating and ice hockey are among the 7 Winter Game sports. A competitor must be the citizen of the country he or she represents. No more than three entries from any country are permitted in each event (4 in the winter games). Only one team per country is allowed in a team sport. There are many myths surrounding the origin of the ancient Olympic Games. The most popular legend describes that Heracles was the creator of the Olympic Games and built the Olympic stadium and surrounding buildings as an honor to his father, Zeus after completing his 12 labors. According to that legend, he walked in a straight line for 400 strides and called this distance a “stadium” that later also became a distance calculation unit. This is also why a modem stadium is 400 meters in circumference length (1 stadium = 400 meters). From then on, the Olympic Games were quickly becoming more and more important throughout ancient Greece, reaching their zenith in the 6th and 5th centuries BC. The Olympics were of fundamental religious importance, contests alternating with sacrifices and ceremonies honoring both Zeus (whose colossal statue stood at Olympia), and Pelops, divine hero and mythical king of Olympia famous for his legendary chariot race, in whose honor the games were held. The number of events increased to 20, and the celebration was spread over several days. Winners of the events were greatly admired and were immortalized in poems and statues. The Games were held every four years, and the period between two celebrations became known as an “Olympiad’’. The Greeks used Olympiads as one of their methods to count years. The most famous Olympic athlete lived in these times: the 6th century BC wrestler, Milo Croton, is the only athlete in history to win a victory in six Olympics. The Games gradually declined in importance after the Romans gained power in Greece. After Emperor Theodosius I made Christianity the religion of the Empire and banned pagan rites, the Olympic Games were outlawed as a pagan festival in 393 AD. In 1894, a French noble man, Pierrde, called a meeting in Paris that led to the first modern Olympic Games, held in Athens in 1896. Thirteen nations sent a total of 285 men, and the Games were revived. Since then the Olympics have been held in different cities of the world once every four years, with the exception of war years 1916, 1940 and 1944. Women first competed in 1912. In 1924 the Winter Olympics were instituted at Chamonix, France.
我国水资源特点是：总量（）人均为（）水能资源（）但开发程度（）。
中国古代最早的病历称为“诊籍”，为汉代淳于意所创。
患者，女，18岁，面部检查，无明显的异常，覆 10mm，覆盖2mm，上颌 和下颌 开 ，四个第一磨牙轻度Ⅲ类咬合关系，牙弓无拥挤，FMA42°下颌角141．5°，下颌支高度偏短。四个第一磨牙牙胚存在。有吮指习惯。 治疗过程中为调整上下颌 关系，对此患者还要采用（）
明代最有影响的中医外科学著作是（）
党员受到开除党籍处分，（）内不得重新入党。
根据《勘察设计注册工程师管理规定》，下列选项不属于注册工程师权利的是（）。
烟草种质资源搜集的方法有哪些？
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郑谷有诗曰：“何事文星与酒星，一时钟在李先生。高吟大醉三千百，留着人间伴月明。”诗中的李先生指的是（）。
郑谷有诗曰：“何事文星与酒星，一时钟在李先生。高吟大醉三千百，留着人间伴月明。”诗中的李先生指的是（）。
郑谷有诗日：“何事文星与酒星，一时钟在李先生。高吟大醉三千百，留着人间伴月明。”诗中的李先生指的是（）。
郑谷有诗日：“何事文星与酒星，一时钟在李先生。高吟大醉三千百，留着人间伴月明。”诗中的李先生指的是（）。
郑谷有诗曰：“何事文星与酒星，一时钟在李先生。高吟大醉三千百，留着人间伴月明。”诗中的李先生指的是（）
受台风影响，李先生所在的公司产品明显滞销，为了节约成本，公司决定裁员，李先生很关心自己会不会被裁掉，对李先生来说，这属于（）。
受台风影响，李先生所在的公司产品明显滞销，为了节约成本，公司决定裁员，李先生很关心自己会不会被裁掉，对李先生来说，这属于（）。
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李先生在机关工作，是家庭经济支柱。李先生的妻子在2012年年初刚刚生了一个小孩。李先生觉得自身需要一些保险保障，于是向寿险理财规划师王某进行咨询。若李先生担心未...