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当前学科：市场营销
题目：
未知类型
由于()在市场营销中的引入，关系营销才出现。
A.经济效益
B.公共关系
C.价格机制
D.竞争者
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推荐知识点:
（）油灰具有防锈作用。
《贷款通则》规定，借款人提前偿还贷款，应当与（）协商。
Literacy Volunteer Last summer I went through a training program and became a literacy volunteer （扫盲志愿者）. The training I received， though excellent， did not tell me how it was to work with a real student， however. When I began to discover what other people's lives were like because they could not read， I realized the true importance of reading. My first student Jane was a 44-year-old single mother of three. In the first lesson， I found out she walked two miles to the nearest supermarket twice a week because she didn't know which bus to take. When I told her I would get her a bus schedule， she told me it would not help because she could not read it. She said she also had difficulty once she got to the supermarket because she couldn't always remember what she needed. Since she did not know words， she could not write out a shopping list. Also， she could only recognize items by their labels. As a result， if the product had a different label， she would not recognize it as the product she wanted. As we worked together， learning how to read built Jane's self-confidence， which encouraged her to continue in her studies. She began to make rapid progress and was even able to take the bus to the supermarket. After this successful trip， she reported how self-confident she felt. At the end of the program， she began helping her youngest son， Tony， a shy first grader， with his reading. She sat with him before he went to sleep and together they would read bedtime stories. When his eyes became wide with excitement as she read pride was written all over her face， and she began to see how her own hard work in learning to read paid off. As she described this experience， I was proud of myself， too. I found that helping Jane to build her self-confidence was more rewarding than anything I had ever done before. As a literacy volunteer， I learned a great deal about teaching and helping others. In fact， I may have learned more from the experience than Jane did. I went through training program and became a literacy volunteer.（） My first student Jane was a 44-year-old single mother of three， could read the bus schedule.（） When 1 began to discover what other people's lives were like because they could not read，I realized the true importance of reading.（） Jane could not recognize items by their labels.（） If the product had a different label，she would not recognize it as the product she wanted.（） She could write out a shopping list.（） After her successful trip to the supermarket，Jane reported how self-confident she felt.（） At the end of the program， Jane began helping her youngest son with his reading.（） As Jane described her experience，I was proud of myself，too.（） I once could not read.（）
土壤污染
关于微量麻醉废气污染，下列说法哪个正确（）
随着行政环境的变化，行政职能的内容、范围和主次关系也必然发生变化，这表明行政职能具有（）的特征。相对于国家权力机关的立法职能而言，行政职能具有明显的执行性质，这种特征就是行政职能的（）。
熔断器主要由哪几部分组成？安秒特性表示什么？主要作用是什么？
非比例再保险合同的主要条款有（）。
餐务
某建设项目年设计生产能力20万台，单位产品变动成本为单位产品售价的55%，单位产品销售税金及附加为单位产品售价的5%，经分析求得产销量盈亏平衡点为年产销量4.5万台。若企业要盈利，生产能力利用率至少应保持在（）以上。