题目内容

背景资料
某机电安装工程项目开工之前,承包方向监理工程师提交了施工进度计划如下图所示,该计划满足合同工期100d的要求。
在上述施工进度计划中,由于工作E和工作G共用一塔吊(塔吊原计划在开工第25d后进场投入使用),必须顺序施工,使用的先后顺序不受限制(其他工作不使用塔吊)。
在施工过程中,由于业主要求变更设计图纸,使工作B停工10d(其他工作持续时间不变),监理工程师及时向承包方发出通知,要求承包方调整进度计划,以保证该工程按合同工期完工。
承包方提出的调整方案及附加要求(以下各项费用数据均符合实际)如下:
(一)调整方案:将工作J,的持续时间压缩5d。
(二)费用补偿要求:
1.工作J,压缩5d,增加赶工费25000元;
2.塔吊闲置15d补偿:600元/d(塔吊租赁费)×15d=9000元;
3.由于工作B停工10d造成其他有关机械闲置、人员窝工等综合损失45000元。
问题:
如果在原计划中先安排工作E,后安排工作G施工,塔吊应安排在第几天(上班时刻)进场投入使用较为合理?为什么?

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听力原文:Man: Good morning. Adventure Holidays Equipment Ltd. Philip Sykes speaking.
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Mall: If the terms are acceptable, may I suggest a meeting towards the end of January?
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Requires details of our (10) ______
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