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A: I've come about your offer for bristles. B: We have the offer ready for you． Let me see..． Here it is． 100 cases of Tsingtao Bristles, 57mm, at..． pounds sterling per kilogram, CIF European Main Ports, for shipment in June, 2009． The offer is valid for three days. A: Why, your price has soared．It's almost 25 % higher than last year's． It would be impossible for us to push any sales at such a price. B: I'm a little surprised to hear you say that． You know very well that market for bristles has gone up a great deal in recent months． The price we offer compares favourably with quotations you can get elsewhere. A: I'm afraid I can't agree with you there． I must point out that your price is higher than some of the quotations we have received from other sources. B: But you must take the quality into consideration． Everyone in the trade knows that China's bristles are of superior quality to those from other countries. A: I agree that yours are of better quality． But there's competition from synthetic products, too． You can't ignore that prices for synthetic bristles haven't changed much over the years. B: There's practically no substitute for bristles for certain uses． That's why demand for natural bristles keeps rising in spite of cheaper synthetic ones． To be frank with you, if it were not for the long-standing relationship between us, we would hardly be willing to make you a firm offer at this price. A: Well, we'll have a lot of difficulties in persuading our clients to buy at this price． But I'll have to try, I suppose.
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施工总承包模式的最大缺点是（）。
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以下描述错误的是（）
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小儿中心静脉压正常值为
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带动胶带运输机运转的电机，线电压是（）V。
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患者男性，54岁，既往体健。因"全身黄染半年，加重1个月"入院。入院前曾在外院保肝治疗，效果不佳。查体：神志朦胧，全身皮肤及巩膜黄染，未见肝掌、蜘蛛痣，肝脾肋下未及；血总胆红素385μmol／L，ALT3218U／L，PT76秒，Alb2.1g／L，最适合患者目前治疗的是（）
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原始组织分别为粗片状、细片状、球状珠光体在加热时奥氏体的形成速度大小依次为（）。
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男性，68岁，咳嗽气喘40年，5年来间断加重，伴下肢水肿，1周来咳喘并下肢水肿加重，痰白色、量多，伴有嗜睡而来院就诊。以下化验检查对诊断具有重要意义的是（）
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下列说法中正确的有：（）
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加油加气站在可燃液体罐的防雷措施中，油罐的良好接地很重要，它可以降低雷击点的电位、反击电位和跨步电压。规定接地点不少于（），是为了提高其接地的可靠性。