问题 判断题

DNA甲基化导致DNA构象变化,从而抑制转录因子与启动区的结合效率。( )

答案

参考答案:

问答题

In the past year, a lot has changed in the field of human spaceflight. (46)In January, President George Bush brushed aside the fact that America’s entire space-shuttle fleet was grounded when he announced grandiose plans to put people back on the moon, and then to launch a manned mission to Mars. (47) In June, Burt Rutan, an American aeronautical engineer, showed that human spaceflight was no longer the preserve of governments by sending a man to the edge of space in Space Ship One, a privately financed vehicle that cost about the same to build as a luxury yacht. That was followed in September by Sir Richard Branson, the British entrepreneur behind the Virgin brand, announcing that he had signed a deal with Mr. Rutan to work on plans for a fleet of five suborbital vehicles developed from Space Ship One.

(48) Now, in the dying days of the year, America’s Congress has passed a bill that unravels a tangle about who would be responsible for regulating the fledgling industry, and under what terms. (49) The bill also allows passengers to fly, on the understanding that this new generation of vehicles may not be as safe as taking a commercial flight between, say, New York and London.

The official line from Virgin Galactica, as Sir Richard’s latest venture is modestly named, is that this coming change in the law makes no practical difference to the firm’s plans, since they do not intend to fly unless they can make their spacecraft as safe as a private jet. But it must surely come as some sort of relief. In any case, Will Whitehorn, director of corporate affairs at Virgin’s headquarters in London, and soon to become the president of Virgin Galactica, says that work is under way on a mock-up of the interior of a new spacecraft that will hold five passengers. (50) Virgin has already committed $20m towards licensing the SpaceShipOne technology from Mr. Rutan and his financial backer Paul Allen, a software billionaire.

(50) Virgin has already committed $20m towards licensing the SpaceShipOne technology from Mr. Rutan and his financial backer Paul Allen, a software billionaire.

问答题

[背景材料]

某建筑工程,建筑面积3.8万m2,地下1层,地上16层。施工单位(以下简称“乙方”)与建设单位(以下简称“甲方”)签订了施工总承包合同,合同期600天。合同约定工期每提前(或拖后)1天奖励(或罚款)1万元。乙方将屋面和设备安装两项工程的劳务进行了分包,分包合同约定,若造成乙方关键工作的工期延误,每延误一天,分包方应赔偿损失1万元。主体结构混凝土施工使用的大模板采用租赁方式,租赁合同约定,大模板到货每延误一天,供货方赔偿1万元。乙方提交了施工网络计划,并得到了监理单位和甲方的批准。网络计划1示意图如图2-1所示。

施工过程中发生了以下事件。

事件一:底板防水工程施工时,因特大暴雨突发洪水原因,造成基础工程施工工期延长 5天,因人员窝工和施工机械闲置造成乙方直接经济损失10万元;

事件二:主体结构施工时,大模板未能按期到货,造成乙方主体结构施工工期延长10天,直接经济损失20万元;

事件三:屋面工程施工时,乙方的劳务分包方不服从指挥,造成乙方返工,屋面工程施工工期延长3天,直接经济损失0.8万元;

事件四:中央空调设备安装过程中,甲方采购的制冷机组因质量问题退换货,造成乙方设备安装工期延长9天,直接费用增加3万元,

事件五:因为甲方对外装修设计的色彩不满意,局部设计变更通过审批后,使乙方外装修晚开工30天,直接费损失0.5万元。

其余各项工作,实际完成工期和费用与原计划相符。

[问题]

指出乙方向甲方索赔成立的事件,并分别说明索赔内容和理由。