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题目：
未知类型
A.均值
B.概率密度函数
C.自相关函数
D.互相关函数
答案：
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在吹炼过程出现炉渣返干时如何处理？（）
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按照电力二次系统安全防护的要求，水调自动化应设置在：（）。
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下列英文缩写中，意思为“个人数字助理”的是（）。
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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 India there is a high divorce rate.（）
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对于熔体粘度高、玻璃化温度高、冷却速率快的塑料制品应采用（）注射。
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电力用户用电信息采集系统主站软件的设计应满足哪些要求？
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波形板分离器有（）和（）两种，在前者中蒸汽与水膜（）流动；在后者中蒸汽与水膜（）流动。
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气随汗脱的理论依据是（ ）
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属于十五络脉的是（）。
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男性，55岁，反复发作咳嗽咳白黏痰15年，渐感气促、呼吸困难3年，加重1周入院，查体示桶状胸，语音震颤减弱，呼吸音减低，呼气音显著延长。肺功能检查最可能出现的通气功能障碍是（）。