热门试题:
[单选题]时分复用系统中各路信号及信令、同步等信号按某种固定顺序排列起来，称为（）。
A.基群
B.帧结构
C.同步
D.调制
[多项选择]某座33层的高层住宅，其外形尺寸长、宽、高分别为60m、25m、98m，所在地年平均雷暴日为47.4d/a，校正系数k=1.5，下列关于该建筑物防雷设计的表述中哪些是正确的( )
A. 该建筑物年预计雷击次数为0.27次/a
B. 该建筑物年预计雷击次数为0.35次/a
C. 该建筑物划为第三类防雷建筑物
D. 该建筑物划为第二类防雷建筑物
[简答题]金属瓦斯抽采管路可以作为采空区及封闭区得埋、插管抽采管路使用。
;
[单选题]充电时应将（）完全插入充电口内，避免因雨淋漏电造成人身或设备伤害。
A.A.充电棒
B.B.充电线
C.C.充电头
D.D.充电枪
[多选题]SDH网元的时钟源有（ ）。
A.A、线路时钟源
B.B、支路时钟源
C.C、内部时钟源
D.D、外部时钟源
[判断题]精密仪器、电器等类物品,应作为货物托运,如按托运行李运输,必须妥善包装,并且此类物品的重量计算在免费行李额内。( )
A.正确
B.错误
[单选题]按照有关规定，商业银行未要求理财人员的（ ）。
A.从业经验
B.职业操守
C.行业资格
D.年龄
[判断题]挂放线滑车的钢丝绳套安全系数应大于5。
A.正确
B.错误
[多选题]下列有关Word修订功能的说法，正确有()。
A.修改状态下用户用以插入批注
B.可以显示所有的修改标记
C.可以为不同的修改形式设置不同的修改标记
D.无法区分不同修订者的修订内容
E.用户可以选择接受或拒绝某个修订
[多选题]在电气设备上工作，保证安全的技术措施由（）执行。
A.调控人员
B.检修人员
C.运维人员
D.有权执行操作的人员
[判断题]交接班会的接班内容规定，接班条件不符合要求时,如确因设备问题,难以在短时间内处理好,经接班人同意,双方确认后,要共同协助解决。
A.正确
B.错误
[判断题]铁矿石的还原性是指矿石被还原气体CO和H2还原的难易程度。( )
A.正确
B.错误
[单选题]‐年，全国国有建设用地土地供应总量42. 8万公顷，比上年增长18.4%。其中，工矿仓储用地15.3万公顷，增长7. 9%；商服用地3. 9万公顷，增长40.4%；住宅用地11.4万公顷，增长40.3%；基础设施等其他用地12.2万公顷，增长10.2%。全年全国105个重点监测城市综合地价比上年上涨8. 6%，其中商业地价上涨10.0%，居住地价上涨11.0%，工业地价上涨5.3%。
全年水资源总量28470亿立方米，比上年增加17.7%。全年平均降水量682毫米，增加15. 4%。年末全国422座大型水库蓄水总量2091亿立方米，比上年末多蓄水284亿立方米。全年总用水量5990亿立方米，比上年增加0.4%。其中，生活用水增加2.9%，工业用水增加1.4%，农业用水减少0.6%，生态补水增加6.8%。万元国内生产总值用水量190.6立方米，比上年下降9.1%。万元工业增加值用水量105.0立方米，下降9.6%。
全年完成造林面积592万公顷，其中人工造林389万公顷。林业重点工程完成造林面积346万公顷，占全部造林面积的58.4%。截至年底，自然保护区达到2588个，其中国家级自然保护区319个。新增综合治理水土流失面积4.2万平方公里，新增实施水土流失地区封育保护面积2.5万平方公里。截至年底，已确权集体林地面积为16204万公顷，其中发放林权证的面积为13396万公顷。
2009年住宅用地占全国国有建设用地土地供应量的比例是多少？（ ）
A.18%
B.20%
C.22%
D.34%
[单项选择]Text 2
There was a time in the late 17th century when no respectable monarch would be seen without a guitar. Both Louis XIV and Charles II were dab hands. And the future Queen Anne thought a guitar tutor was worth an annual stipend of ￡100, which was a small fortune then.
The instrument had seen revivals in the early 19th century and the early 20th, when its place in the concert hall was finally secured by Andres Segovia. A further decade in the sun in the 1970s resulted from the maturity of two gifted young guitarists: Julian Bream and John Williams. But in the past three decades, this subtle musical voice has grown quieter and quieter. Until now, Deutsche Gramophon has signed its first classical guitarist in years. Milos Karadaglic’s debut CD of Mediterranean repertoire is out this month and includes pieces by two popular composers.
The 27-year-old Montenegrin blames the pop world for his instrument’s demise. "With the invention of the electric guitar, the instrumen
A. People are tired of glaring technological advances in musical instruments.
B. Competition in the music world has led to the current revival of the guitar.
C. The classical guitar is an instrument producing pure and natural music.
D. A guitarist’s performance creates a personal touch of the music.
[单选题]D5-1403有几个压力变送器?
A.1
B.2
C.3
D.4
[多选题]国家发展人民警察教育事业，对人民警察有计划地进行（）等教育培训。
A.政治思想
B.法制
C.警察业务
D.专业能力
[判断题]请假一日以内（不远离驻地，不在外住宿）的，消防员由中队（站）首长批准
A.正确
B.错误
[多项选择]患者女性，20岁，甲状腺功能亢进症，服用他巴唑治疗1个月后突发极度乏力，寒战、高热伴咽痛。查体：咽部肿胀，有坏死溃疡。他巴唑的不良反应包括（）
A. 皮疹或皮肤瘙痒
B. 轻度白细胞减少
C. 味觉减退
D. 恶心、呕吐
E. 关节痛、头痛、头晕
F. 脉管炎
G. 狼疮样综合征
H. 肝炎
I. 心律失常
[多项选择]下列那些债券属于信用债券( )。
A. 无担保债券
B. 抵押债券
C. 担保债券
D. 附属信用债券
[判断题]动车组列车遇特殊情况需变更办理客运业务的固定股道时，须经调度所值班主任（值班副主任）准许。
A.正确
B.错误
[单项选择]“机智”是指思维的( )。
A. 灵活性
B. 敏捷性
C. 深刻性
D. 广阔性
[多选题]以下属于中央社会治安综合治理委员会《意见》体现的流动人口的主要权益有（ ）。
A.平等接受高等教育
B.子女平等接受义务教育
C.社会保障
D.参与政治活动
E.计划生育服务
[单选题]药品检验工作的基本程序一般包括
A.取样、鉴别、检查
B.取样、鉴别、检查、含量测定
C.取样、鉴别、检查、含量测定、写出检验报告
D.取样、鉴别、含量测定
E.取样、鉴别、检查、写出检验报告
[判断题]日常电气设备的维护和保养应由设备管理人员负责。(1.0分
A.正确
B.错误
[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.’
[多选题]随中低端防火墙发货的免费配套光盘可以收集哪些日志（）
A.会话分析日志
B.应用流量分析日志
C.用户行为分析日志
D.网络安全分析日志
[单项选择]带压汽车槽车卸液，按规定保留罐内有（）MPa以上余压，但余压最高不得超过当时环境温度下介质的饱和蒸汽压力。
A. 0.05
B. 0.1
C. 0.2
D. 0.3
[判断题]《铁路旅客运输办理细则》发售代用票发生退款时在合计栏的金额数前用减号表示退款额。
A.正确
B.错误
[单项选择]下面不是肾细胞癌特点的是（）
A. 是起源于近端肾小管上皮细胞的恶性肿瘤
B. 无痛性血尿、腰痛、季肋部肿物是其主要症状
C. 透明细胞癌是最常见的类型
D. 通常易发生淋巴道转移
E. 免疫组化：CK8、EMA、CEA阳性，Vimentin阴性
[判断题]矿山救援队是处理矿山灾害事故的专业队伍，实行标准化、军事化管理。( )
A.正确
B.错误
