热门试题:
[单选题]我国狂犬病的传染源主要是：
A.病犬
B.病猫
C.蝙蝠
D.狼
E.患者
[单选题] (单选题,1.0分),密码编码学研究()、如何对消息进行加密。(1.0)
A. 怎样编码
B. 破解
C. 破译
D. 对密文破译
[判断题] 睫状肌舒张时,悬韧带张力下降,晶状体靠自身弹性回缩变厚,产生眼的调节。
A.正确
B.错误
[多项选择]按照《环境保护法》的规定，有下列（）行为的，环境保护行政主管部门或者其他依照法律规定行使环境监督管理权的部门可以根据不同情节，给予警告或者处以罚款。
A. 拒绝环境保护行政主管部门现场检查的
B. 拒报污染物排放申报事项的
C. 拒绝缴纳排污费的
D. 建设项目的防治污染设施没有建成便投入生产的
E. 将产生严重污染的生产设备转移给没有污染防治能力的单位使用的
[判断题]依法促进企业、机关、事业单位基本养老保险制度改革不是建立社会保障体系的任务之一。
[判断题]高处作业吊篮在使用前必须经过施工、安装、监理等单位的验收。未经验收或验收不合格的，不得使用。
A.正确
B.错误
[判断题]二氧化碳灭火器可用于一般电气火灾。
A.正确
B.错误
[单选题]()安全技术措施有消除危险源、限制能量或危险物质、隔离等。
A. 减少事故损失的
B. 电气
C. 防止事故发生的
[单项选择]尽管取消了纺织品贸易配额，但贸易歧视依然存在，国际贸易摩擦加剧。这对我国出口增长开始形成明显约束。面对这一新的形势，我国政府一方面加强对本国产品的出口保护，做好应对工作；另一方面，也在加快贸易增长方式的转变，尽快从数量型转向质量效益型。贸易摩擦程度的加剧说明了在国际贸易中（）
A. 贸易自由化原则行不通
B. 存在不等价交换
C. 贸易歧视越来越严重
D. 国际市场竞争激烈
[多项选择]五倍子(肚倍)的性状特征有
A. 菱角形，具不规则角状分枝
B. 表面被柔毛
C. 质硬而脆，易破碎
D. 气特异，味涩
E. 断面角质状
[多项选择]居住区道路网形式有( )。
A. 规则式
B. 分散式
C. 自由式
D. 混合式
E. 集中式
[单选题]Ⅱ级施工由集团公司（ ）、施工主体项目业务部室主任（副主任）担任施工协调小组正、副组长，成员由行车组织、设备管理、建设、设计、施工、监理、安监等有关部门和单位主管人员组成。
A.业务部室工程师
B.业务部室副主任人
C.业务部室主任
D.施工办主任（副主任）
[填空题]Cell-Phone Bans While Driving Have More
Impact in Dense, Urban Areas
A The study,
conducted by Sheldon Jacobson, a professor of computer science and the director
of the simulation and optimisation laboratory at Illinois, analysed the
relationship between pre-and post-law automobile accident rates using public
data from 62 counties in New York. Jacobson and co-researchers Alexander
Nikolaev and Matthew Robbins published their results in an article titled
Evaluating the Impact of Legislation Prohibiting Hand-Held Cell Phone Use While
Driving, which will appear in a forthcoming issue of the Journal Transportation
Research Part A: Policy and Practice.
B The team found
that after banning hand-held cell phone use while driving, 46 counties in New
York experienced lower fatal accident rates, 10 of which did so at a
statistically significant level, while all 62 counties experienced lower
personal injury accident rates. They also discovered that the personal injury
accident rate decrease was more substantive in counties such as Bronx, New York
and Queens, where there was a high density of licensed drivers rather than in
sparsely populated areas of upstate New York. ’What that suggests is, if you
have a congestion of cars and you’re distracted, you’re more likely to hit
someone,’ Jacobson said. ’If you have a lower congestion of cars, you’re still
distracted, but you’re less likely to hit anyone because there are less people
to hit. It’s simple probability.’ Driver distraction is thought to be the cause
of nearly 80 per cent of automobile accidents in the U.S., resulting in about
2,600 deaths, 330,000 injuries and 1.5 million instances of property damage
annually.
C Although a ban on hand-held cell phone use
while driving in rural areas has less of an impact on driver safety, Jacobson
says that doesn’t necessarily mean the ban itself is worthless. ’Hand-held cell
phone bans are very valuable in high-density urban areas, but less so in
lower-density rural areas,’ Jacobson said. ’But that doesn’t mean they have no
impact in rural areas. It just means that such legislation is less likely to
have an impact on driver accident rates.’
D Jacobson’s
study differs from other studies in that, rather than focusing on reaction times
of simulated drivers in lab setting, it analysed publicly available data of
accident rates published by the New York State Department of Motor Vehicles. To
allow for a proper comparison between time periods, the years 1997 to 2001 were
treated as the pre-law time period, and the years 2002 to 2007 were considered
as the post-law time period. ’Nobody’s done a study like this before,’ he said.
’Everything prior to this is a micro-analysis of reaction time in laboratories
by researchers.’ The challenge, Jacobson said, was getting the right data to
analyse. ’The best state that had the data to analyse was New York,’ he said.
’They’ve had the hand-held cell phone ban in place since 2001. So we had a lot
of data.’
E Jacobson said one of the limitations of the
study is extrapolating the data from New York state and projecting it onto the
nation at large. ’That’s fraught with problems, but these are limitations we
acknowledge,’ he said. ’Every state is unique, but the overall conclusions still
stand to reason.’ Jacobson, who also holds appointments as a professor of
industrial and enterprise systems engineering, of civil and environmental
engineering, says the holy grail of data sets to analyse would be the property
damage data collected by insurance companies. Jacobson says the difference
between his study and one recently published by the Highway Loss Data Institute,
an affiliate of the Insurance Institute for Highway Safety, is that he used
publicly available data and the number of licensed drivers as a proxy for
accident prediction. (The insurance industry-backed report studied pre- and
post-ban insurance claims from accidents in California, Connecticut, New York
and Washington, D.C. It contends that state laws banning the use of cell phones
while driving didn’t reduce the number of vehicle crashes.) If the property
damage data were available to Jacobson and his co-researchers, ’We could come up
with a more definitive statement,’ he said.
F Another
challenge for Jacobson and his team was how to standardise accident data across
the counties. Their solution was to use the number of licensed drivers and
compare the statistical inferences to licensed-driver density. ’Measuring the
throughput of cars is very difficult,’ Jacobson said. ’As a result, using the
number of licensed drivers is a reasonable way to standardise, and
licensed-driver density provided an interesting measure to compare the
counties.’ The measures of traffic safety considered in the study are the number
of fatal automobile accidents per 100,000 licensed drivers per year and the
number of personal injury accidents per 1,000 licensed drivers per year,
Jacobson said. For the purpose of analysis, the personal injury accident rate
proved to be a more appropriate measure. ’The trend that we saw was that
high-density driving areas tended to have a more precipitous drop in the number
of fatalities and accidents after the ban was implemented than in lower- density
areas,’ Jacobson said. ’This was more pronounced for personal-injury rates than
it was for fatality rates.’
G Despite the exponential
growth in cell phone subscribers, Jacobson says that all the evidence suggests
that hand-held cell phone bans while driving are worthwhile. ’All the evidence
suggests hand-held cell phone bans while driving are a good thing, and this is
more evidence to that effect,’ he said. ’But it doesn’t establish it
definitively. There’s still more work to be done, but this helps to further
clarify the picture.’Licensed-driver density is the way to help limited data become national.
[多选题]中队每季度至少开展一次考核评比活动,考核内容包括()
A.事故处理与预防检查
B.装备维护保养
C.执行规章制度、政治与技术业务学习
D.演习训练、体质训练
[单选题]电刷边缘全部或大部分有强烈的火花。换向器上有黑痕,用汽油不能擦除,同时电刷上有灼痕。电机不允许在这种情况下长期运行。这样的火化等级为（ ）级。
A.1
B.2
C.3
[不定项选择题]电力系统操作前应考虑（）
A.潮流变化
B.备用容量分布
C.电压变化
D.频率变化
[单选题]政府及政府有关部门应当从资金、税收、人才等多方面采取优惠措施，鼓励和支持（）。加强安全生产理论和政策研究，运用大数据技术开展安全生产规律性、关联性特征分析，提高安全生产决策科学化水平。
A.安全生产的科学技术研究工作
B.相关技术研发
C.科学技术研究
D.技术改造及研发
[判断题]把带顶开装置的箭形止回阀抢装在井口钻具上,缷松顶开杆的定位螺丝时,操作者应避开顶开装置的导流口方向。
( )
A.正确
B.错误
[单选题]Usenet命名规则第一部分确定专 题小组所属的大类,约有( )顶级类别。
A.6个
B.8个
C.10个
D.12个
[判断题]韶山8型电力机车电机轴和小齿轮内孔的配合锥度为1:3。 ( )
A.正确
B.错误
[单选题]某矿井下因发火将一长度为2350米,断面积为12平方米的巷道进行了封闭,现在用一台BGP-400型高倍数泡沫灭火机向封闭的巷道注入高泡,高泡机的泡沫量为400m3/min。用( )分钟将封闭的巷道注满。
A.22.5
B.70.5
C.13.33
D.5.026
[单选题]县信访局是否应该受理关某王某夫妇所提出的信访事项？（）
A.应该.该案涉及事业单位及其工作人员的职务行为
B.不应该.该事项属于民事纠纷.因诉讼解决
C.不应该.该事项因扶贫工程而起.须顾全大局
D.不应该.县里面没有安排专项资金.即使受理也无济于事
[单选题]①然而，我觉得“界面”代替了“纸面”的阅读，损失的可能是时间的纵深和历史的厚重
②之所以这样说，是因为就我个人的经验而言，阅读其实是一种有重量的精神运动
③如今，网络阅读成为人们生活重要的组成部分
④人类的阅读行为也随之发生了革命性的变化：眼睛在网上快速、便捷的“暴走”，逐渐替代以往细嚼慢咽似的传统阅读
⑤新媒介使昔日“纸面”凝聚的诸多艺术的神性，不断被“界面”的感觉颠覆和碾轧
⑥人在获得大面积爆炸性信息的同时,也会有某种难言的失重感
将以上6个句子重新排列，语序正确的是（）。
A.③④①⑤⑥②
B.⑥②④⑤①③
C.⑥②⑤③④①
D.③④⑤①⑥②
[单选题]针对近期七国集团峰会关于中国问题的公报，我国外交部发言人陆慷表示：“我们希望七国集团和域外国家认清形势，________在有关争议问题上不持立场的承诺，充分________本地区国家管控争议的努力，停止发表不负责任的言论，为本地区的和平稳定发挥建设性的作用。”
填入画横线部分最恰当的一项是：
A.遵守理解
B.履行认识
C.恪守尊重
D.践行认同
[判断题]一级处警力量调度模式是指完成警情受理工作后，由同一级指挥中心或队站通信室负责完成力量调度工作的处警模式。
A.正确
B.错误
[单项选择]Which of the following statements regarding the issuance of a discount bond is TRUE（）
A. The cash from operations (CFO) is understated.
B. The cash from investing (CFI) is increased by the amount of the proceeds.
C. The cash from financing (CFF) is increased by the amount of the proceeds.
[多选题]护栅栏破损或倒塌时，应通知（）、公安部门，并通知确认是否（）。
A.工务
B.电务
C.侵限
D.越界
[判断题]无论在任何情兄下,三极管都具有电流放大功能。
A.正确
B.错误
[多选题]使用虚假身份证件罪中的“身份证件”包括( .
A.居民身份证
B.护照
C.社会保障卡
D.驾驶证
[单选题] 某大工业客户装有2000kVA变压器1台,已知基本电价为10元/(kVA·月),电度电价为0.20元/kWh,高峰电价为0.30元/kWh,低谷电价为0.10元/kWh,该客户当月抄见总有功电量为1000000kWh,高峰电量为40000kWh,低谷电量为200000kWh,则该户当月平均电价为(____)元/kWh。
A. 0.18
B. 0.24
C. 0.26
D. 0.34
[单选题]《安全生产法》规定,生产经营单位从业人员的义务不包含_____。
A.严格遵守本单位的安全生产规章制度和操作规程,服从管理,正确佩戴和使用劳动防护用品
B.应当接受安全生产教育和培训,掌握本职工作所需的安全生产知识
C.发现事故隐患应当立即向现场安全生产管理人员或者本单位负责人报告;
D.在没有必要的劳保防护用品时，服从领导安排，按规程作业
[单选题]小型养路机械、机具、防护电话和自动报警器等如在作业中发生故障，应（ ）。
A.设置移动停车信号防护
B.当即派专人检修
C.设置故障防护
D.停机下道进行检修
[单选题]电费管理工作主要有抄表、核算、收费和()统计分析几个环节。()
A.电费
B.电价
C.票据
D.台帐
[判断题]凡参加高处作业的人员，应每两年进行一次体检。（）
A.正确
B.错误
