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题目：
单选题
A甘油
B聚乙烯醇缩甲乙醛
C邻苯二甲酸二丁酯
D丙酮
E丙二醇
答案：
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企业可以根据实际需要，聘请具有相应资质的专业机构进行可行性研究。
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There are three kinds of goals: short-term,medium-range and long-term goals. Short-range goals are those that usually deal with current activities,which we can apply on a daily basis.Such goals can be achieved in a week or less,or two weeks,or possible months.It should be remembered that just as a building is no stronger than its foundation ,out long-term goals cannot amount to very munch without the achievement of solid short-term goals.Upon completing our short-term goals,we should date the occasion and then add new short-term goals that will build on those that have been completed. The intermediate goals bukld on the foundation of the short-range goals.They might deal with just one term of school or the entire school year,or they could even extend for several years.Any time you move a step at a time,you should never allow yourself to become discouraged or overwhelmed. As you complete each step,you will enforce the belief in your ability to grow adn succeed.And as your list of completion dates grow,your motivation and desire will increase. Long-range goals may be related to our dreams of the future. They might cover five years or more. Life is not a static thing.We should never allow a long-term goal to limit us or our course of action. Our long-term goals mean a lot（）. New short-term goals are bulid upon（）. When we complete each step of our goals ,（）. Once our goals are drawn up,（）. It is implied but not stated in the passage that （）.
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在均降的后阶段因设有底部均降，而使吸附塔的吸附前沿不会继续向前沿摧进，不能回收吸附塔内死空间的有效气体。
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恶性淋巴瘤的细胞起源可为多种，包括______、______和______。
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某施工企业刚建立时，资产总额为8000万元，现发生一笔以银行存款100万元偿还银行借款的经济业务，此时，该企业的资产总额为（）万元。
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急性化脓性腹膜炎患者术后，采取半卧位的目的，哪项错误（）
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驱动桥的结构主要由壳体、（）、半轴、轮边减速器及轮胎轮辋总成等组成。
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患者男，57岁，因“发热伴呕吐、腹泻1周，气促、尿少（24h尿量约200ml）1d”来诊。既往史：酒精性肝炎（无肝硬化）10余年，高血压10余年，按时服用降压药物，血压控制良好。无特殊疾病家族史。查体：T38℃，R32次/min，BP70/40mmHg；意识障碍，精神萎靡，四肢末梢发绀，膝部见大理石样花纹，四肢尚温；吸气时见“三凹征”，双肺底可闻及散在细湿性啰音；HR110次/min，律齐，未闻杂音；腹部及神经系统未见异常。目前应采取的治疗措施有（）
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如在水中加少量碱面（碳酸氢钠）对（）更好。
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判断汽车产品存在缺陷的原则是（）。