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一般DN150消防水泵接合器的通水能力为101/s。
Passage1 Questions 1 to 5 are based on the following passage. It's interesting that the arrival of snow has the effect on people in different countries.(76) For some countries it is an important happening to celebrate each year, while for others a catastrophe (灾害) or even a wonder. But there are countries between these two kinds that normally expect snow some time over the winter months, but never receive snow regularly or in the same quantities every year.Britain is one of them, for which the arrival of snow quite simply creates problems.Within hours of the first snowfalls, however light, roads are blocked; trains and buses have to stop in the middle of the way.Normal communications are affected as well: telephone calls become difficult and the post immediately takes more time than usual.And almost within hours there are also certain shortages-bread, vegetables and other things-not because all these things can no longer be produced or sent to shops,but mainly because people are frightened and go out and store up with food and so on...just for fear that something bad should happen. But why does snow have this effect? After all, the Swiss, the Austrians and the Canadians don't have such problems.It is simply because there is not enough planning and preparation.We need money to buy equipment to deal with snow and ice.To keep the roads clear, for example,requires snow-ploughs (扫雪机) and machines to spread salt.(77) The reason why a country like Britain does not buy snow-ploughs is that they are only used for a few days in any one year, and the money could be more useful in other things such as hospitals, education, helping the old, and so on.3 After a few hours' snowing there are often some shortages of food because______.
在办公室里见到熟悉的老客户,可以用他(她)的小名或绰号来称呼他(她),这样显得更加亲切。
对于大脑半球的描述正确的有()
女,40岁。胆道手术后,T管引流2周,拔管前先试行夹管1—2天,夹管期间应注意观察的内容是()。
旅游换汇成本明显低于贸易换汇成本,一般仅为贸易换汇成本的()
女方怀孕,法院能否受理男方有关同居期间财产纠纷的起诉?男方申请宣告婚姻无效可以吗?
()是一种缴费灵活、保额可调整,非约束性的寿险。
女患者,小腹部有一包块,坚硬,固定不移,疼痛拒按,面色晦黯,月经量多。舌边有瘀点,脉沉涩。治宜:()
越冬池封冰施用()培养浮游植物。
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