在缝纫时，面、底线不能（）在一起形成的线迹，称为跳线。 A.交织 B.连续交织 C.

患者10岁，3年前开始发作性意识丧失，全身抽动，持续4～5分钟恢复，发作时面色青紫，有时伴尿失禁、舌咬伤，常在夜间睡眠中发作；体检及各项检查均正常，最可能的诊断是()

A．癔症

B．特发性失神发作

C．症状性失神发作

D．特发性全面强直—阵挛发作

E．症状性全面强直—阵挛发作

向含有下列离子的溶液中加入一小块金属钠，引起离子数目减少的是

A．OH^—

B．CO₃^2—

C．HCO₃^—

D．Cl^—

背景

A公司承建跨线立交桥工程，桥梁全长782.4m，共计26跨，桥梁下部结构有240棵直径1.2m的钻孔灌注桩，采用反循环钻机成孔。项目部经招标程序将钻孔作业分项工程分包给B公司，签订了分包合同。施工过程中现场发生如下事件：

事件一：因地下管线改移困难，设计方在现场决定8、9、10轴桩位移动并增加钻孔桩数量，立即办理了洽商变更手续。项目部及时复印后，直接交给测量员和负责本段施工的工长。

事件二：项目部在现场文明施工检查中发现原有泥浆沉淀池已淤积，致使钻孔施工的泥浆水沿排水沟流到工地附近的河道里，现场土堆旁有未燃尽的油毡碎片。事件三：B公司液压吊车起吊钢筋笼时，因钢筋笼的U形吊环与主筋焊接不牢，起吊过程中钢筋笼突然倾倒;幸亏作业人员及时避开，但将泥浆搅拌棚砸坏。项目负责人组织人员清理现场，并开展事故调查分析，对分包方进行罚款处理，调查报告完成后，经项目负责人签字，上报了A公司安全部门。

事件四：项目部要求B公司增加钻孔机，以保障钻孔作业计划进度。但B公司1周后才将钻机运到现场，致使该桥全部钻孔桩完成时已拖延工期15d。

问题

1、事件一中变更设计程序有无不妥?给出正确程序。

2、事件二的做法有无违规之处?写出正确做法。

3、事件三的事故处理程序是否妥当?如不妥当，写出正确做法。

4、就事件，分析项目部与分包进度控制存在问题，给出应采取的控制措施。

When my brother and I were young, my mom would take us on Transportation Days.

It goes like this: You can't take any means of transportation more than once. We would start from home, walking two blocks to the rail station. We'd take the train into the city center, then a bus, switching to the train, then maybe a taxi. We always considered taking a horse carriage in the historic district, but we didn't like the way the horses were treated, so we never did. At the end of the day, we took the subway to our closest station, where Mom's friend was waiting to give us a ride home—our first car ride of the day.

The good thing about Transportation Days is not only that Mom taught us how to get around. She was born to be multimodal (多方式的). She understood that depending on cars only was a  failure of imagination and, above all, a failure of confidence—the product of a childhood not spent exploring subway tunnels.

Once you learn the route map and step with certainty over the gap between the train and the platform, nothing is frightening anymore. New cities are just light­rail lines to be explored. And your personal car, if you have one, becomes just one more tool in the toolbox—and often an inadequate one, limiting both your mobility and your wallet.

On Transportation Days, we might stop for lunch on Chestrut Street or buy a new book or toy, but the transportation was the point. First, it was exciting enough to watch the world speed by from the train window. As I got older, my mom helped me unlock the mysteries that would otherwise have paralyzed my first attempts to do it myself: How do I know where to get off? How do I know how much it costs? How do I know when I need tickets, and where to get them? What track, what line, which direction, where's the stop, and will I get wet when we go under the river?

I'm writing this right now on an airplane, a means we didn't try on our Transportation Days and, we now know, the dirtiest and most polluting of them all. My flight routed me through Philadelphia. My multimodal mom met me for dinner in the airport. She took a train to meet me.

小题1: According to the writer, what was the greatest benefit of her Transportation Days?

A．Building confidence in herself.

B．Reducing her use of private cars.

C．Developing her sense of direction.

D．Giving her knowledge about vehicles.小题2: The underlined word “paralyzed”(in Para.5) is closest in meaning to “________”．

A．displayed

B．justified

C．ignored

D．ruined小题3: Which means of transportation does the writer probably disapprove of?

A．Airplane.

B．Subway.

C．Train.

D．Car.

脑组织的放射性耐受量与下列哪些因素有关？（）

A.单次剂量

B.总计量

C.总治疗时间

D.治疗次数

E.以上均是