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隋朝大运河的开凿，具有时代的必然性，主要指：（）
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伤口清创中作局部浸润麻醉，正确的方法是（）。
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（）是竣工图的标志和依据。
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关于“圈梁”相对准确的说法是（）。
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未参与维持血液pH平衡的是（）
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教师一边讲课，一边板书，一边观察学生，是注意的（）的表现。
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Dialogue : Beautiful Packing John: Glad to see you again, Sherman. Sherman: Hi, glad to see you too. John: Please, sit down．Would you like to try our new tea? Sherman: Great! The main purpose of my visit today is to place another order of your Longjing tea．Actually, we will place regular orders from now. John: Oh, it is a good news for us．I have the confidence that our tea won't make you disappointed. Sherman: That is true．But before that, I'd like to talk something about the packing of Longjing tea. John: Did you find any problems with the packing? Sherman: No．My meaning is to improve the packing of your Longjing tea．There is no doubt that the quality of your tea is good．It is the packing that often gives the first impression on customers rather than the products themselves so we believe the packing is as important as the quality of the products themselves. John: I agree with you．But could you be in details? Sherman: Sure．Firstly, we believe the out-look of the package should attract customer．A beautiful packing is surely a great help in pushing sales．To be honest, your packing is not attractive enough to buyers. John: Do you mean the color of the design should be more bright and eye-catching7 Sherman: Eye-catching with traditional Chinese style．You see, customers even can smell your culture before they open the box and drink the tea．As you know, one function of packing is to stimulate the buyer's desire to buy. John: I'll pass your idea onto our designers and ask them to improve it. Sherman: Thank you John．Secondly, if it is possible, we would like to advise you to improve your methods of packing. John: Our packing is typical tin for tea．Any questions about this method of packing? Sherman: I am thinking about how to let your packing speak for the good quality of the tea itself．Can we find some other packing ways to show off the appealing green and sl~ape of the tea? John: We can leave an open window on packing. Sherman: You get the point. John: Thanks for your suggestion.
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流水线组织设计的主要工作有()。
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女性，28岁。风湿性心脏病10年，心房颤动史3年，长期服用地高辛治疗，停经3个月，诊断为早孕。1周来因恶心、呕吐、纳差就诊。查体：心脏增大，心率70次／分，律不齐，心尖部第一心音减弱，可闻及3/6级收缩期杂音，向左腋下传导并可闻及舒张期杂音。胸骨左缘2~4肋间2/6级收缩期杂音，P2亢进，心电图示心房颤动（Af）、室性期前收缩（VPB）。下列哪项表现应与洋地黄无关（）
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原则上，一般准备余额不低于风险资产期末余额的（）。