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常见问题
当前学科:医学信息检索
题目:
文献检索的原理是什么?
答案:
<查看本题扣3积分>
通过对大量的,分散无序的文献信息进行搜集.....
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推荐知识点:
DNS
以下叙述中,正确的叙述是:
文献检索
试论马克思主义的能动反映论,并以认识和实践“具体的历史的统一”的观点阐明解放思想、实事求是和与时俱进的关系。
1. While the train ______ (still move), a great many men suddenly jumped out. I thought that something terrible was happening, so I ran away.2. I’d rather you ______ (give) me a new one instead of having the old one repaired as you did.3. He spends all his spare time planting trees. He says by the end of next year he ______ (plant) 2000.4. It is highly desirable that every effort ______ (make) to reduce expenditure.5. It’s just struck midnight. It’s time we ______ (go) to bed.6. Don’t take his remarks too seriously. He was so upset that I don’t think he really _____ (know) what he was saying. 7. Don’t you remember ______ (meet) him at my house?8. It took me two hours ______ (do) my homework.9.They believed that by using computers the production of their factory ______ (increase) greatly.10. He is squatting beside a notice which ______ (read) “No smoking”.
B 公司生产乙产品,乙产品直接人工标准成本相关资料如下表所示:假定B 公司实际生产乙产品10000件,实际耗用总工时25000小时,实际应付直接人工工资550000元。要求:(1)计算乙产品标准工资率和直接人工标准成本。(2)计算乙产品直接人工成本差异、直接人工工资率差异和直接人工效率差异。
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