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当前学科：金属非金属矿山安全作业
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猛炸药具有相当大的稳定性，需要较大的外部能量作用才能引起爆炸。
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Marriage Advertisements in India Every Sunday morning millions of Indians settle down with a cup of tea and special weekend issues of their newspapers, just as Americans do. But here, with the marriage season approaching, many of them quickly to a Sunday feature that is particularly Indian-the-columns of marriage advertisements in which young people look for husbands and wives. This is relatively modern change in the age-old custom of the arranged marriage. The thousands of advertisements published each week increasingly reflect social changes that coming to this traditional society. For example, although women are still described in terms of appearance, or skill in "the wifely arts", information about her earning power is entering more and more of the advertisements. This reflects the arrival in India of the working wife. Divorce, which used to be almost unheard of in India, is sometimes now mentioned in the advertisements as in the case of a woman whose advertisement in New Delhi newspaper explained that had been "the innocent party" when her marriage broke up. Because the custom of the dowry (marriage payment) is now illegal, some advertisements say "no dowry" or "simple marriage", which means the same thing. However, the fathers of many bridegrooms still require it. In a land where light skin is often regarded as socially preferable, many also require that a woman have a "wheat-color" complexion or that a man be "tall, fair and handsome". Advertisements are placed and eagerly read by a wide range of people in the upper classes, mostly in cities. Many of them receive dozens of answers."There's nothing embarrassing about it," explained a Calcutta businessman advertising a son-in-law. "It's just another way of broadening the contacts and increasing the possibility of doing the contacts and increasing the possibilities of doing the best one for one's daughter." Because of high unemployment and a generally poor standard of living here, one of the best attractions a marriage advertisement can offer is a permit to live abroad, especially in Canada or the United States. A person who has one can get what he wants. One recent Sunday in Madras, for example, a Punjabi engineer living in San Francisco advertised for a "beautiful slim bride with lovely features knowing music and dance". And a man whose advertisement said that he held an American immigration permit was able to say, only girls from rich, well-connected families need apply. In the text, a Sunday feature is a kind of newspaper advertisements in which young people look for husbands and wives.（） In Marriage advertisements in India women are only introduced in terms of appearance or their skill in being a good wife.（） India′s society is changing.（） The word "dowry" in the third paragraph means marriage payment.（） In India people with light skin and good feature are preferable.（） Anyone can receive dozens of answers if he/she placed an advertisement.（） The word "one" in "a person who has one can get what he wants" refers to good attraction.（） Advertisements are only read by a small group of people of high social status.（） In India there is a high divorce rate.（） A male who has an American immigration permit means he is competitive in marriage than others.（）
乾隆59年平定准噶尔叛乱，因其地处中国西部，称西藏，1965年成立西藏自治区。()
向水中加入某种电解质，使胶体的扩散层变薄，电位降低甚至趋于零，胶体颗粒间的静电斥力随之减弱或消失。此时，胶体颗粒相互接触时就很容易通过吸附作用聚结成大颗粒。这种过程常称为（）
下列哪些说法适合描述《卡门组曲》？（）
急诊室抬来25岁妊娠足月初产妇，家属代述乡医院诊断为肩先露，嘱去大医院处理。医师检查产妇腹部，最常见到的异常情况是（）。
患者男，46岁。既往有慢性乙型肝炎病史，乙肝后肝硬化。发现尿蛋白阳性1个月来诊，无血尿，无恶心呕吐，发现双下肢水肿。既往否认糖尿病及高血压病史。查体：肝病病容，血压170/100mmHg，双肺未闻及干湿啰音，心律齐，无杂音，腹软，无压痛，双下肢水肿。实验室检查：尿常规发现血尿（-），蛋白（+++），24小时尿蛋白定量6.78g/d，血白蛋白19g/L，肌酐76μmol/L。经治疗7年后，患者于右侧上腹部可触及包块，行全腹增强CT示肝内占位，实验室检查尿蛋白(+++)，尿蛋白定量16g/d，肌酐124mmol/L，血白蛋白17g/d，HBVDNA<1．0×10，下列哪项治疗适合患者()
指（趾）骨化脓性骨髓炎的X线表现中，下列哪项是错误的（）
根据现有的标准航次租船合同，船舶说明条款中的载重吨是指（）.
（）系统用作冷却增压后的空气，以提高进入气缸的空气密度。
瓦斯爆炸的条件不是固定不变的。