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绝缘材料的导电能力很差，常用玻璃、塑料、（）、云母等。
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国际工程投标报价工作在投标者通过资格预审并获得招标文件后开始，首先要做的工作是（）
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关于癌基因的叙述，错误的是（）
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One hundred and fifty years ago, the position of women in the U. S. society was very different【C1】______their position today. At that【C2】______, women were completely subordinate to【C3】______. Society did not encourage women to have a career【C4】______the home. Although they received an【C5】______at elementary school and high school, they were not【C6】______to attend college or university. Even when a【C7】______woman had a job, she【C8】______not keep the money that she earned. The law【C9】______her to give the money to her husband! Society expected women to do the housekeeping, to【C10】______the children, and to obey their husbands. That was【C11】______role in society. They did not have the right to vote.【C12】______many ways, they were almost【C13】______slaves. This situation began to change slowly【C14】______the first feminist(女权主义)group was organized in 1848. After that year, small groups of women began to protest the【C15】______of equality and justice in U. S. society. Progress was slow, 【C16】______many years, their attempts to improve【C17】______position ended in failure. Slowly, 【C18】______, more and more people began to【C19】______their ideas and support their demands【C20】______in 1920, women were given the right to vote in a national election.【C1】A．withB．fromC．toD．against
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债券投资的资本利得是指债券买入价与卖出价(或买入价与到期偿还额)之间的差额加上定期的利息的总和。
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妊娠腹痛的别名是（）。
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请枚举出关于切换的重要参数不少于3个
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老子说：“我有三宝，持而保之。”此三宝一曰慈，二曰检，三曰：（）
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综合成本率的计算中所用的权数可以按( )确定。 A．账面价值 B．市场价值 C．目标价值 D．票面价值
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