热门试题:
[多选题]监测系统是DS6-K5B计算机机联锁系统的一个重要组成部分,监测系统用户界面主要包括( )等,用户可根据不同的需求调用不同的界面观察所需信息
A.站场图形显示
B.报警显示
C.设备信息查询
D.联锁系统运行图
[判断题]安全生产责任包含了两方面的意义:一是指分内应做的安全工作,恪尽职守;二是指没有做好自己的安全生产工作,而应承担的不利后果或强制性义务。
A.正确
B.错误
[单选题]在易燃易爆物品储放场所动火工作、带明火进入,未采取防火等安全措施,动火作业点()米内未清除可燃物品或作业后现场遗留火种。违章定级为A类违章
A.3
B.5
C.8
D.10
[判断题]依据《建筑材料及制品燃烧性能分级》(GB8624),我国建筑材料及制品燃烧性能分为A.B1.B2.B3四个等级。()
A.正确
B.错误
[判断题]第77条 测量带电的交叉跨越线路的垂直距离时,可用用金属尺、测量绳等测量。
A.正确
B.错误
[判断题]安全是一 种状态,取决于事件发生的可能性和后果的严重度方面是否为人们可以接受的。
A.正确
B.错误
[单选题] 单选题 对于雷达信号处理和雷达数据处理的关系,正确的是( )。
A. 雷达信号处理和雷达数据处理同时进行
B. 雷达数据处理是第一次处理,雷达信号处理是第二次处理
C. 雷达信号处理是第一次处理,雷达数据处理是第二次处理
D. 其它答案均是
[单选题]铁路机车车辆的驾驶人员持过期或者失效驾驶证件执业的,由地区铁路监督管理局责令改正,可以处( )元以下的罚款。
A.500
B.1000
C.2000
[多项选择]工程准备阶段文件包括在( )阶段形成的文件。
A. 立项
B. 审批
C. 征地
D. 设计
E. 签约
[多选题]由于股指期货具有()的特点,因此它常常被用来作为组合管理的工具。
A.交易成本低
B.可消除风险
C.流动性好
D.预期收益高
[单选题]光纤通信系统是以()为载波,以光纤为传输介质的一种线通信方式。
A.电波
B.声波
C.微波
D.光波
[多选题]给予消防救援局和森林消防局( )干部处分,按照国家有关规定实施。
A.正职
B.副职
C.督导员
D.助理员
[单项选择]当触电人有呼吸但心跳停止时,应采用()进行抢救。
A. 人工呼吸法
B. 胸外心脏按压法
C. 人工呼吸法和胸外心脏按压法
[单选题]当河面结冰时,应采用( )计算每一垂线上的平均流速。
A.二点法
B.三点法
C.五点法
D.六点法
[判断题]ISO14000是国际标准化组织(ISO)第207技术委员会(TC207)从1993年开始制定的一系列环境管理国际标准。
A.正确
B.错误
[单选题]查验人员查验时,应严格按部相关文件要求执行,原则上查验应不少于( )人完成检查及确认工作。
A.2
B.3
C.1
D.1或2
[单选题]工作许可人与( )应在工作票上分别确认、签名。
A.A.工作负责人
B.B.工作监护人
C.C.工作班人员
D.D.工作票签发人
[单选题]请阅读Passage l,完成第小题。
Passage 1
Move over Methuselah. Future generations could be living well into their second century and still doing Sudoku, if life expectancy predictions are true. Increasing by two years every decade,they show no signs of flattening out. Average lifespan worldwide is already double what it was 200 years ago. Since the 1980s, experts thought the increase in life expectancy would slow down and then stop, but forecasters have repeatedly been proved wrong.
The reason behind the steady rise in life expectancy is "the decline in the death rate of the elderly", says Professor Tom Kirkwood from Newcastle University. He maintains that our bodies are evolving to maintain and repair themselves better and our genes are investing in this process to put off the damage which will eventually lead to death. As a result, there is no ceiling imposed by the realities of the ageing process. "There is no use-by-date when we age. Ageing is not a fixed biological process," Tom says.
A large study of people aged 85 and over carried out by Professor Kirkwood discovered that there were a remarkable number of people enjoying good health and independence in their late 80s and beyond. With people reaching old age in better shape, it is safe to assume that this is all due to better eating habits, living conditions, education and medicine.
There are still many people who suffer from major health problems, but modern medicine means doctors are better at managing long-term health conditions like diabetes, high blood pressure and heart disease. "We are reaching old age with less accumulative damage than previous generations. We are less damaged," says Professor Kirkwood. Our softer lives and the improvements in nutrition and healthcare have had a direct impact on longevity.
Nearly one-in-five people currently in the UK will live to see their 100th birthday, the Office for National Statistics predicted last year. Life expectancy at birth has continued to increase in the UK--from 73.4 years for the period 1991 to 1993 to 77.85 years for 2007 to 2009. A report in Science from 2002 which looked at life expectancy patterns in different countries since 1840 concluded that there was no sign of a natural limit to life.
Researchers Jim Oeppen and Dr. James Vaupel found that people in the country with the highest life expectancy would live to an average age of 100 in about six decades. But they stopped short of predicting anything more.
"This is far from eternity: modest annual increments in life expectancy will never lead to immortality," the researchers said.
We do not seem to be approaching anything like the limits of life expectancy, says Professor David Leon from the London School of Hygiene and Tropical Medicine. "There has been no flattening out of the best of the best--the groups which everyone knows have good life expectancy and low mortality," he says.
These groups, which tend to be in the higher social and economic groups in society, can live for several years longer than people in lower social groups, prompting calls for an end to inequalities within societies.
Within populations, genes also have an important role to play in determining how long we could survive for--but environment is still the most important factor.
It is no surprise that healthy-living societies like Japan have the highest life expectancies in the world. But it would still be incredible to think that life expectancy could go on rising forever. "I would bet there will be further increases in life expectancy and then it will probably begin to slow," says Tom, "but we just don't know."
The underlined phrase "low mortality" in Paragraph 8 could best be replaced by“__________ ”.
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A.short life span
B.low death rate
C.low illness rate
D.good health condition
[单选题]母线及绝缘子红外测温周期:35kV及以下:( )。
A.1月
B.3月
C.半年
D.1年
[多选题]按生产要素分配中的“生产要素”主要包括( )。
A.劳动力
B.资本
C.技术
D.管理
[单项选择]2012年10月14日,我国成功将实践九号A/B卫星发射升空并送入预定转移轨道,该卫星是我国民用新技术试验卫星系列的首发星,主要用于提高我国卫星研制基础能力。从哲学角度看,科技创新的重要意义在于()
A. 科技进步对社会发展起积极推动作用
B. 科学研究应树立创新意识,不唯书不唯上只唯实
C. 科学理论能够正确地预见社会发展的方向和趋势
D. 科学试验是人类思维在认识和改造社会中创造性的表现
[单选题]
在柴油机曲轴的各项工作条件下,不正确的是_________(335891:第02-02章 柴油机主要部件及检修)
A.曲轴受气体力,往复惯性力,离心力和摩擦力及其产生的弯矩的作用
B.曲轴在径向力,切向力和扭矩的作用下会产生扭转,横向和纵向振动
C.曲轴内钻有输油孔道,供到主轴承的滑油通过曲轴内的油孔送往曲柄销轴承和活塞组
D.曲轴的附加应力大
[判断题]( )攀登高柱信号机作业时,必须确认信号机构及梯子接地良好。
A.正确
B.错误
[判断题]调车指挥人确认有关人员均已了解调车作业计划后,方可开始作业。
A.正确
B.错误
[多项选择]数学区活动的指导包括多个方面,下面属于数学区活动的指导的有()
A. 教师应向全体幼儿介绍数学区,并讨论制定必要的规则
B. 使每个幼儿知道数学区中都有哪些材料,它们放在什么地方以及如何使用
C. 数学区的材料应配合教学进度和幼儿兴趣,适时予以增加或替换
D. 动员幼儿和家长为丰富数学区的材料
[判断题]严禁将有毒品与食品或食品添加剂混储混运。
A.正确
B.错误
[单选题]特种设备存在严重事故隐患,无改造、修理价值,或者达到安全技术规范规定的其他报废条件的,特种设备使用单位应当依法履行()义务。
A.继续使用
B.维修后使用
C.报废
D.报告
[判断题]学校可以聘用曾经因故意犯罪被依法剥夺政治权利的人担任工作人员。( )
[单选题]工作负责人、工作许可人任何一方不得擅自变更( ),运行值班人员不得变更有关( )的运行方式
A.工作班成员,检修设备
B.安全措施 检修设备
C.工作班成员,运行设备
D.安全措施, 运行设备
[单选题]现场防护员要与作业人员之间保持不大于( )的距离。
A.20 m
B.15 m
C.10 m
D.5 m
[单选题]根据《民法典》规定,民事主体应当遵循( ),按照自己的意思设立、变更、终止民事法律关系。
A.自愿原则
B.诚实原则
C.等价有偿原则
D.合理原则
[单选题]填用第一种工作票进行工作,工作负责人应在得到()的许可后,方可开始工作。
A.第一个工作许可人
B.工作票签发人
C.任何一个工作许可人
D.全部工作许可人
E.略
F.略
[判断题]施工负责人在列车通过后,应组织复查整修,确认线路、桥隧等设备质量达到规定要求并做好记录后,方准收工。( )
A.正确
B.错误
[多选题]操作井下电气设备应遵守的规定有( )。
A.操作低压电气设备主回路时,操作人员必须戴绝缘手套或穿电工绝缘靴
B.手持式电气设备的操作手柄和工作中必须接触的部分必须有良好绝缘
C.非专职人员或非值班电气人员不得擅自操作电气设备
D.操作高压电气设备主回路时,操作人员必须戴绝缘手套,并穿电工绝缘靴或站在绝缘台上
[填空题]常压350℃含量大,说明常压拔出率低,减压负荷增加,各侧线质量();常压350℃含量小,说明常压拔出率高,减压负荷少,各侧线质量()。
[单选题]新榜数据、西瓜助手、考拉新媒体助手等是常用的第三方数据分析工具。
A. 对
B. 错