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卷扬机使用的钢丝绳必须与卷筒牢靠地固定，卷筒的最小允许直径为钢丝绳直径的16-20倍。
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300 Hurdles Now comes the first hurdle. __1__ We all make it over this hurdle with ease. This symbolizes. Those obstacles in life that we struggle to get over, but we always manage to do so. You can look at that hurdle in two ways: "I can’t make it over, I’m too tired" or "I am one more hurdle closer to finishing this race". This is an example of taking a negative situation and seeing something positive in it. The next part of the race is every hurdle between the first and last one. __2__ This happens a lot in life too. There may be a situation that arises where you feel as though you can’t make it and all you can think about is giving up. You may fall over that "hurdle" or struggle getting over it, but somehow you find it in yourself to jump over it and move on with the race. Next is that last 100m of the race. You feel as though you just want to say, "No I can't do this." __3__. Now lastly is the last hurdle. This hurdle is the toughest out of all of them. In life we find ourselves falling and falling, and maybe getting too lost in our problems that we fell like have been though enough and there’s no hope. __4__ It's one step close to the end of the race. Once you finish, you look back on it and you realize that you made it not by leaping, but step by step. "Yard by yard, life is very hard. But inch by inch, life can be a cinch."__5__. __5__内应选（）
300 Hurdles Now comes the first hurdle. __1__ We all make it over this hurdle with ease. This symbolizes. Those obstacles in life that we struggle to get over, but we always manage to do so. You can look at that hurdle in two ways: "I can’t make it over, I’m too tired" or "I am one more hurdle closer to finishing this race". This is an example of taking a negative situation and seeing something positive in it. The next part of the race is every hurdle between the first and last one. __2__ This happens a lot in life too. There may be a situation that arises where you feel as though you can’t make it and all you can think about is giving up. You may fall over that "hurdle" or struggle getting over it, but somehow you find it in yourself to jump over it and move on with the race. Next is that last 100m of the race. You feel as though you just want to say, "No I can't do this." __3__. Now lastly is the last hurdle. This hurdle is the toughest out of all of them. In life we find ourselves falling and falling, and maybe getting too lost in our problems that we fell like have been though enough and there’s no hope. __4__ It's one step close to the end of the race. Once you finish, you look back on it and you realize that you made it not by leaping, but step by step. "Yard by yard, life is very hard. But inch by inch, life can be a cinch."__5__. __1__内应选（）
【背景材料】某设备工程采用FIDIC《生产设备和设计——施工合同条件》，雇主分别与A公司订立了《雇主／咨询工程师服务协议书》，与B公司订立了《生产设备和设计——施工合同》。在合同履行过程中，发生了下述事件。事件一：在B公司制造生产设备期间，工程师要求对生产设备的制造工艺进行实地检验，但B公司以生产设备的制造工艺涉及其商业秘密为由，拒绝安排工程师进入设备制造厂进行检验。事件二：生产设备制造完毕，在运往安装现场途中遭遇暴风雪，交通中断，使得设备进场比预计时间迟延，导致安装工程延误了2天进行。对此，承包商提出索赔，要求延长竣工时间2天，并补偿2天的停工损失。事件三：生产设备安装完毕，依照合同要求对生产设备进行竣工试验，在启动前试验时，发现由于雇主提供的基础工程出现沉降，导致不能进行启动试验，故对基础工程进行了修复，延误了2天的启动试验。进行启动试验时，发现由于生产设备的设计缺陷，影响了生产设备运行的可靠性，又对生产设备进行了修补，因此导致竣工试验延误了3天。生产设备的竣工试验通过后，B公司向工程师提出索赔，要求延长竣工时间5天，补偿5天停工损失。
某市新建科技馆工程，地下2层，地上24层，地上裙房4层，通过正规招投标程序，建设单位最终选定了一定具有相应施工总承包资质的A建筑公司为中标单位，并与其签订了工程总承包合同。 施工过程中发生如下事件： 事件一：建设单位将该工程金属门窗工程指定分包，并与具备相应资质条件的B公司签订门窗施工合同。 事件二：由于工期紧张，A公司在征得建设单位同意后，决定自行施工主楼，将裙房工程分包给具备相应资质的C公司，将装饰装修分包给具备相应资质的D公司。 事件三：A公司在征得建设单位同意后，与E劳务公司针对主楼施工签订了劳务分包合同，经查E公司具备相应劳务资质。由于该工程工期压力较大，E公司劳务人员不够，将部分劳务分包给同样具备相应资质的F劳务公司。 事件四：由于D公司管理不善，出现施工质量问题，给建设单位造成一定损失，建设单位因A公司为项目总承包，于是就此事向A公司提出索赔要求。A公司认为损失由D公司造成，且分包给D公司也经过建设单位同意，所以建设单位应向D公司提出索赔，A公司不应承担质量责任。 问题 事件一中，关于建设单位指定分包门窗工程的做法是否正确？并说明理由。
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