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简述教学测量的分类。
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在精馏操作中多次部分气化将获得接近纯的（）。
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煤矿调度人员应当按规定（），了解安全生产情况。
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[<center><strong>The packing</strong></center] The function of packing mainly shows as follows : packing can be used to protect the goods and keep them as good and complete as they are shipped in the circulation field; packing makes it convenient for stoiing, taking care of, transporting, loading, unloading the goods;strong packing can prevent the goods from being stolen and damaged; reasonable packing can lessen shipping space and save freight. Marketing packing makes it convenient for consumers to select, carry, or use the goods. Marketing packing can also beautify the commodity, attract consumers, expand sales and increase the gains on foreign exchange. In addition to all those mentioned above, packing of the goods, in a sense,incarnates the level of a country's economic construction, science and technology, culture and art, etc. In order to satisfy the rapid development of our foreign trade,we should grasp the latest achievement of packing science, do well in our export trade, and try to make our packing more scientific, economical, strong, merchantable, and pleasing to the eyes, and do our utmost to increase the foreign exchange eamings. So the following points should be complied with. We should greatly strengthen the research into packing materials, packing contains and packing methods, in which we should not only attach importance to many years' experience in our packing work but also earnestly study the advanced experience of foreign countries, and start from the reality of our country to continuously improve our commodity packing work. We should carefully study the packing characteristics, developing tendency and relative packing regulations and decrees in intemational markets so as to make the packing of our export commodity adapted to marketing requirements and consumption habits. Especially we should pay close attention to the needs for our packaging decorations of the goods in foreign supermarkets, and the reasonable stipulations on packing of import countries , thus increasing our commodity sales. We should strengthen the study of the design for packaging decorations, improve packing techniques, blaze new trails, and continuously increase the artistic level of packing. We should realize the standardization of our exporting commodity packing and unification of materials, specifications, capacities, standards and sealing methods, only in this way can it be easy to measure,identify,load,unload and transport the goods, so as to promote the smooth fulfillment of business. On possible conditions, we should properly make acquisition of advanced technology from abroad to help produce the high level and advanced packing materials which we can not make by our technology process,in order to meet the requirements of the international market for high level packaging materials. Specifically speaking, we should study the packing from both protective and promotional aspects. This kind of product production needed in one market may differ from that needed elsewhere. A hot, humid climate probably requires a package different from that needed in a cooler, drier area. The kind of transportation and ways of handling the product can also dictate package differences. Stronger protection must be built into package if it will be subjected to bad roads, long distances and frequent or rough handling. Long and slow distribution channels also increase the demands on the package. If one market has a three-month cycle of production to final consumption and another market has a six-month cycle , the latter market probably will require a more durable and expensive package. This is especially true if the market with a slow distribution cycle also has bad transportation and other conditions punishing to packages, as is frequently the case. For the reason the poorer countries may require more expensive packaging in spite of' their lower purchasing power. In addition to these conditions within the channel,the way the final buyer uses the product will also affect the package. If the buyer has a slow usage rate and lacks appropriate storage facilities,the demands on the package are increased. Promotional aspects of packaging, those attributes which help persuade channel members to handle the product and consumers to buy it, often vary among markets, too. Channel members want minimum breakage and theft , plus ease of handling. The retailer is concemed about shelf storage and display. A country with a large number of very small retail outlets may want a package different from the one desired by a country where self- service supermarkets are popular. Because of shopping habit and retail structure, most of the detergent sold in France , Germany , and Spain is packed in three-and-one-half kilogram round drum. Questions for reading :
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家长的艺术修养对孩子的影响是耳濡目染、润物无声的，家长应增加自身的艺术体验，创造美的环境。()
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低压电力网的布局应与农村发展规划相结合，供电半径一般不大于（）m。
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淬火后进行（）的热处理工艺叫调质。
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新华公司系增值税一般纳税人，适用的增值税税率为17%。新华公司于2012年1月1日以银行存款200万元取得M公司5%的股权，对M公司不具有重大影响，但其在公开市场中有报价，新华公司将其分类为可供出售金融资产，按公允价值计量。当日M公司可辨认净资产公允价值为2800万元。2012年12月31日，可供出售金融资产的公允价值为320万元。2013年1月1日，新华公司又以其生产的一批产品自C公司取得M公司另外50%的股权，当日M公司可辨认净资产的公允价值为3100万元。购买日新华公司该批产品的成本为1300万元，公允价值为1600万元。新华公司原持有M公司5%股权于2013年1月1日的公允价值为325万元。新华公司与C公司在此之前不存在任何关联方关系。不考虑其他因素，新华公司的下列处理中正确的有（）。
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资产负债表中的“持有待售的非流动资产或持有待售的处置组中的资产”，属于流动资产项目，反映企业主要通过出售（包括具有商业实质的非货币性资产交换）而非持续使用收回其账面价值的一项非流动资产或处置组。
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何谓ABO正、反定型?