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按照评价的角度不同，风险评价可分为()。
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胰腺癌首发症状是（）。
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电火花线切割加工过程中，电极丝的进给速度是由材料的蚀除速度和极间放电状况的好坏决定的。（）能自动调节电极丝的进给速度，使电极丝根据工件的蚀除速度和极间放电状态进给或后退，保证加工顺利进行。
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关于信息系统安全立法，除了国家有关部门制定的法律法规外，各地区根据本地实际情况制定的“实施细则”也属于这个范畴。
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Overcoming Difficulties ① Life is full of difficulties and obstacles, from birth to death. At times, Life seems like a hurdle race. We are sure of encountering hurdles, but almost always we are taken by surprise. It is necessary to accept that life in general is full of difficulties and adversities. This recognition is the first step. When faced with problems, we often feel, "I am the only one having such problems" Or, we tend to exaggerate our problems and regard them as most complex, most painful，and as an extreme case. But if we look around us, we find people in much worse conditions. As St. Augustine said, "I cried for boots, till I saw a man who had no legs." ② When faced with difficulties, we either complain or seek to dodge them. We behave like as ostrich in the desert. It is said that when there is a storm in the desert, the ostrich buries his head in the sand-hoping that the storm will go away if he ignores it-and finally gets buried under a heap of sand and dies. Some of us choose to pretend that the problems do not exist. We fail to realize that confronting and solving the problem-no painful the process-makes us grow. ③ Accept the woes of birth. It has many implied meanings. First, it means "accepting," i.e., being able to say that it is "my" problem and it is up to me to solve it. Many times we find ourselves putting the blame on others-parents, society or the circumstances of life. Nothing happens by chance, but all is the result of our past actions. There are times when what is needed is patience. We seek to come out of an unpleasant situation quickly. We must understand that if the cause had been operating for a long time, the effect also would last long-as even when the gas has been turned off, the burner remains hot for a long time. Similarly, we expect quick results; having put in the effort, we must be willing to wait. Patient acceptance of what is due to us makes us makes us take a step further in our development. ④ Once we have learnt to deal with a difficulty, the next time we encounter it, it ceases to be a difficulty. But, more often than not the cause of the problem is internal, i.e., within us, and often, it calls for a change. Often the difficulty is solved when we are willing to change—our way of thinking, our feelings, our likes and dislikes—and ready to adapt or adjust ourselves to a problematic situation or a person in life. We must realize that realize that change is inevitable, and always be mentally prepared for it. ⑤ Not all life's problems are such that they need to be dealt with all at once. Sometimes it is possible to take a step and wait for a long time. For instance, if the tap is leaking then we need to call a plumber as soon as we can. But having called him and having found that he can come only the following morning, we should wait patiently for the next 24 hours. In this period, people can get very anxious and go on talking about it to others. There are many such problems in life. Sometimes problems do need taking a step and（）
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建设项目的供地方案、农用地转用方案、补充耕地方案和征用土地方案经批准后，由市、县人民政府组织实施，向（）颁发建设用地批准书。
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报刊剪辑分析：是科研人员从与课题相关的各种报刊杂志上所刊登的文章、报导中，分析和收集信息。
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如果水样酸度等于2mmol/L所用NaOH的浓度为0.01mol/L，则滴定应耗NaOH多少毫升？
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患儿，男性，5岁。上颌乳中切牙邻接面浅龋，拟用氟化物进行浅龋治疗，其主要作用机制不包括（）
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合川钓鱼城位于重庆合川区哪里？