热门试题:
[单选题]大队横队,由各中队(站)的( )依次向左并列组成。
A.并列横队
B.并列纵队
C.纵队
D.横队
[判断题]只有被告人供述，没有其他证据的，不能认定被告人有罪和处以刑罚。
A.正确
B.错误
[判断题]一张工作票中，工作票签发人、工作许可人和工作负责人三者不得为同一人。
A.正确
B.错误
[单选题]用导通法核对电缆线芯时，必须将电缆从端子排脱离，用适当的确认无压后，方可对线。
A.A、两侧，电压表
B.B、任一侧，电流表
C.C、两侧，电流表
[单选题]车载数据中未设置为"禁止绿灯确认"时，当列车距出站或发车进路信号机小于（ ）时，司机按规定方法操作后，LKJ解除该信号机及次一架信号机前机车信号为一个白色灯光的停车控制。
A.500m
B.600m
C. 400m
D.700m
[单项选择]河北省第一工业支柱产业是（）
A. 纺织业
B. 煤炭业
C. 钢铁业
D. 化工业
[判断题]车站的调车工作：车站调车操作方式（车站操作方式）或转为非常站控的车站，由列车调度员统一领导。《行细》第61条
A.正确
B.错误
[单选题]开车后飞艇检查发动机动力手势为
A.上下摆动手臂
B.点头
C.手指向抬艇人员，并握拳做往后拉手势
[单项选择]电子巡航控制系统ECU（电脑），整个控制器采用了（）个运算放大器。
A. 一
B. 二
C. 四
D. 三
[单选题]《中华人民共和国义务教育法》颁布的年份是（ ）。
A.1950 年
B.1977 年
C.1980 年
D.1986 年
[单选题]山脉的延伸方向被称为走向。下列山脉中，走向与其他三项不同的是()。
A.长白山
B.六盘山
C.横断山脉
D.贺兰山脉
[单选题]关于劳动防护用品的规定不包括（ ）
A.生产经营单位必须为从业人员提供符合国家标准或者行业标准的劳动防护用品
B.生产经营单位应当监督、教育从业人员按照使用规则佩戴、使用劳动防护用品
C.生产经营单位要安排劳动防护用品的经费
D.生产经营单位每年要发放足够数量的劳动防护用品
[填空题]The world’s population continues to grow. There now are about 4 billion of us on
earth. That could reach 6 billion by the end of the century and 11 billion in a farther 75 (1)______
years. Experts have long been concerned about such a growth. Where will we find the
food, water, works, houses, schools and health care for all these people A major new (2)______
study shows that the situation may be changing. A large and rapid drop in the world’s
birth rate have taken place during the past 10 years. Families generally are smaller now (3)______
than they were a few years ago. It is happened in both developing and industrial nations. (4)______
Researchers said they found a number of reasons for this. More men and women are
waiting more longer to get married and are using birth control devices and methods to (5)______
prevent and delay pregnancy. More women are going to school or working at jobs away
[单选题]有条件、有需求的车站可将部分公用候车座椅调整为等数量的多功能候车座椅,调整数量暂不得超过全部公用候车座椅的（ ）。
A.10%
B.20%
C.30%
D.40%
[判断题]心血池动态显像和心室功能测定对冠心病心肌缺血的诊断有较高的临床价值。
[简答题]一位语文老师走进教室，准备上新教材《小山羊》。他刚走上讲台，只听见警笛声，学生被这警笛声吸引，离开座位，看消防车，并议论。这位老师没有制止学生，学《小山羊》一课。而是把“消防车”作为一种绝好的课程资源来加以利用，因势利导，……（分析：该教师做法是否符合新课程改革的精神？）
[单选题]测量轴电压和在转动着的发电机上用电压表测量转子绝缘的工作，应使用专用电刷，电刷上应装有(____)以上的绝缘柄。
A.100mm
B.150mm
C.200mm
D.300mm
[判断题]货物转向架上架体与跨装货物，下架体与车辆分别固定在一起。（ ）
A.正确
B.错误
[单选题]工作班人员发现现场安全措施不适应工作时，应( )。
A.继续工作
B.及时提出异议
C.工作后提出疑问
D.以上三种都可以
[多项选择]WMS中的主要功能模块是（）。
A. 库位设定与安全库存量
B. 入库与出库管理
C. 库内保管状况与物品移动
D. 结算与统计
[简答题]影响铸铁中石墨化过程的主要因素是什么？相同化学成分的铸铁件的力学性能是否相同？
[单选题] 丛式井组之间的井口距离不小于( ) m。
A.:1;
B.:1.5;
C.:2;
D.:2.5。
[单选题]在培训方法中，()适用于管理人员或技术人员了解专业技术发展方向或当前热点问题。
A.实践法
B.讲授法
C.专题讲座法
D.研讨法
[单项选择] Edwin Hubble
Edwin Hubble changed our ideas about the universe and how it developed. The work of few other scientists changed our understanding of 【51】 suddenly. He made his most important discoveries in the 1920s. Today, other scientists continue the work he began back then. Edwin Powell Hubble was born in 1889 in Marshfield, Missouri. He 【52】 his early years in the state of Kentucky. Then he moved with his family to Chicago, Illinois. He attended the University of Chicago, taking mathematics and astronomy 【53】 his specialty.
As a student, Hubble was also a member of the University’’s basketball team and an excellent boxer. Several people urged him 【54】 for the world heavy weight boxing championship after college. Instead he decided to continue his 【55】 .
In his first observations from Mount Wilson, California, Hubble used a telescope with one-hundred fifty-two and began 【56】 more and more distant objects. His first great discovery was
A. likely
B. like
C. as
D. similar to
[多选题]作业人员应被告知其作业现场和工作岗位存在的(____)。
A.危险因素
B.设备缺陷
C.防范措施
D.事故紧急处理措施
[单选题]380/220V配电典型设计方案编号D代表（ ）。
A.低压
B. 高压
C. 开关
D. 变压器
[单选题]卢梭认为，国家主权的终极来源是（ ）。
A.政党
B.政府
C.人民代表
D.人民
[单项选择]{{B}}第二篇{{/B}}
|
U.S. Scientists Confirm Water on
Mars
NASA scientists said that Mars was covered
once by vast lakes, flowing rivers and a variety of other wet environments that
had the potential to support life.
Laboratory tests aboard
NASA’s Phoenix Mars Lander have identified water in a soil sample. The lander’s
robotic arm delivered the sample Wednesday to an instrument that identifies
vapors produced by the heating of samples.
"We have water," said
William Boynton of the University of Arizona, lead scientist for the Thermal and
Evolved-Gas Analyzer, or TEGA. "This is the first time Martian water has been
touched and tasted. "
The robotic arm is a critical part of the
Phoenix Mars mission. It is needed to trench into the icy layers of northern
polar Mars and deliver samples to instrum
A. They are from America.
B. They are from Canada.
C. They are from both America and Canada.
D. They are from neither America nor Canada.
[单选题]事假审批权限。在不影响正常工作前提下，员工连续请假5～10 天（含10 天）的，由（ ）批准。
A.班组长
B.车间主任（作业区、科室责人）
C.本单位人力资源科室
D.单位主管领导
[单项选择]下列关于趋势延伸法描述有误的是（）。
A. 趋势延伸法又称趋势外推法，是一种常用的预测方法
B. 直接趋势延伸模型参数a和b的最佳拟合值，用最小的二乘法计算
C. 对时间编号可采用最简单形式，∑t=0编写方法
D. 直线趋势延伸法与平滑技术的适用条件不同
[填空题]
Rather than fight the crowds in the Chicago and San Francisco areas, thousands of busy people log on (登陆) to the Peapod, an online shopping and delivery service. Peapod is giving us a look into the future of retailing (零售业 ) -the virtual store. Peapod is a pioneer in a rapidly expanding industry that is devoted to enabling us to buy almost anything from PC.
Peapod’s online shopping system is linked directly to its partner store’s computer systems. When you send your shopping list to Peapod, an order is delivered to the nearest partner store. A professionally trained shopper takes your order, grabs (抓) a shopping cart, and does your shopping for you. The professional shopper takes a fraction of the time you would take because the list is ordered by aisle (栏) and the shopper knows exactly what to get. The system saves people time and money.
Busy people in Chicago and San Francisco do their shopping by entering (46) .
Peapod is an
[单选题]线路轨道静态几何尺寸容许偏差管理值中，轨向（直线）偏差为()m弦测量的最大矢度值。
A.5
B.10
C.15
D.20
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