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选矿工艺主要由( )阶段构成。
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双层道床宜按垫层厚度铺足，单层道床铺设厚度宜为（）。
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甲市一药品生产企业生产的某中药注射剂在新药监测期内，导致一名患者出现过敏性休克，致其最终死亡。若该药品生产企业在获知新的、严重的药品不良反应后，应当在（）内报告。
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大运量快速交通 【mass rapid tr-ansit 】
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（）是室上嵴至肺动脉口之间的光滑区域，形似倒置的漏斗形。
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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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活塞环的高度用（）来表示。
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ICP法进行样品测定时，连续背景和谱线重叠干扰属于（）。
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单一课是指一节课中主要完成一项教学任务的课。下列属于单一课的有（）
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兼香型白酒是在对（）几个白酒产品进行初步总结的基础上提出来的。