普罗塔戈拉认为：“人是万物的尺度”，强调人的感知是判断万物的标准，与其有相似哲学观点

阅读下面短文，根据所给语境，按要求完成下列各题。

    The first walk into outer space was taken by a Soviet astronaut. Astronaut Zhai Zhigang became the first

Chinese to walk in space on September 27,2008. It showed that it was quite safe for a man to be outside the

spaceship for a certain period of time. But to walk in space, astronauts have to meet with many kinds of

difficulties and dangers.

    The spaceship goes round the earth at an altitude (海拔高度) of about 200 kilometers above its surface. At

such altitudes there is no atmosphere which prtects the life on the earth. The conditions of outer space are very

harmful to man.

    The boiling point of liquids (液体) goes down with pressure. But pressure outside the spaceship is nearly

zero. In such conditions the decompression (减压) of the spacesuit may cause the boiling of the blood and quick

death. There is radiation from space and it is harmful.

    Breathing problems in space can be solved with the help of the spacesuit. Another problem is heat. Man gives

off heat in the course (过程) of his activity, and the harder the labor (劳动) is, the greater the amount (总量) of

heat is. In space unless special measures are taken, the heat inside the spacesuit would make the conditions

difficult.

1. 根据处完成下面的句子。（每空一词）

    Zhai Zhigang became the first Chinese astronaut _______  _______ in space on September 27, 2008.

2. 根据短文内容，完成下面的句子。（每空一词）

    The altitude is so _______ that there is no atmosphere which protects the life on the earth. At the same time,

    the astronauts usually meet with some problems, such as _______ problem, radiation problem, breathing

    problem, heat problem and so on.

3. 将画线句子翻译成汉语。

    _________________________________________________________________________

如图所示，真空中有一以(r，0)为圆心、半径为r的圆柱形匀强磁场区域，磁场的磁感应强度大小为B方向垂直纸面向里，在y≥r的范围内，有方向向左的匀强电场，电场强度大小E。从O点向不同方向发射速率相同的质子，质子的运动轨迹均在纸面内，已知质子的电量为e，质量为m，质子在磁场中的偏转半径也为r，不计重力及阻力作用。求：

(1)质子进入磁场时的速度大小；

(2)速度方向沿x轴正方向射入磁场的质子，到达y轴所需的时间；

(3)速度方向与x轴正方向成30°角（如图中所示）射入磁场的质子，到达y轴时的位置坐标。

场景(十六) 甲施工单位为使施工作业方便，将雇佣来的部分农民工安排在一间没有竣工的楼房里作集体宿舍。杨某夜间起来方便，掉进一个没有设置明显标志且未采取安全措施的基坑中，造成腿部受伤，花去医疗费3000元。杨某多次找该项目的建设单位、施工单位索赔，双方都互相推诿。
根据场最(十六)，回答下列问题：

根据《建设工程施工现场管理规定》规定，施工现场的用电线路、用电设施的安装和使用必须符合安装规范和安全操作规程，并按照施工组织设计进行架设，严禁任意拉线接电。施工现场( )。

A．必须设有保证施工安全要求的夜间照明

B．必须有保证施工安全的主管人员管理

C．必须设有危险潮湿场所的照明以及手持照明灯具

D．必须采用符合安全要求的电压

E．必须要对用电作业人员进行专业培训和考核，合格方可上岗

到目前为止传播过程的模式可以分为四类（）、（）、（）和（）。

C63A型敞车后从板座磨耗板剩余厚度小于（）时更换

A.2mm

B.3mm

C.4mm

D.5mm