热门试题:
[单项选择]20世纪90年代初，小普村建立了洗涤剂工厂，当地村民虽然因此提高了收入，但工厂每天排出的大量污水，是村民们忧心忡忡：如果工厂继续排放污水，他们的饮用水将被污染，健康将受到影响。然而，这种担心是多余的。因为1994年对小普村的村民健康检查发现，几乎没有人因水污染而患病。以下哪项为真，最能质疑上述论证？（）
A. 1994年，上述洗涤剂厂排放的污水量是历年中较少的
B. 1994年，小普村的村民并非全体参加健康检查
C. 合成洗涤剂污染饮用水导致的疾病与一般疾病相比更难检测
D. 合成洗涤剂污染饮用水导致的疾病需要多年后才会显现出来
[多选题]新建加热炉烘炉时，通常需经过的三个恒温阶段分别是( )
A.150℃
B.320℃
C.450℃
D.500℃
[单选题]( )、磷、钾等单质固体物质着火后先熔融,后燃烧。(难)
A. 硫
B. 沥青
C.石蜡
D. 松香
[单选题]劳动能力鉴定委员会应当自作出确认结论之日起( )日内将确认结论送达工伤职工及其用人单位。
A.5
B.10
C.20
D.30
[多项选择]以保险的性质为标准分类，保险可以分为商业保险、社会保险和政策保险。其中商业保险与社会保险的区别表现为（）。
A. 缴费原则不同
B. 实施方式不同
C. 数理基础不同
D. 经营主体不同
E. 以上全部正确
[多选题]台区线损精益化管理评价过程管控主要从管理线损和技术线损两个维度，对（ ）等专业支撑工作质量进行评价。
A.A.责任制落实
B.数据监测
C.巡视检查
D.营配贯通
[单选题]P65 型棚车自重为( )。
A.26t
B.25.4t
C.24t
D.23.5t
[单选题]防护栏杆必须自上而下用安全立网封闭，或在栏杆下边设置严密固定的高度不低于( )的挡脚板或40cm的挡脚笆。
A.14cm
B.16cm
C.18cm
D.20cm
[单项选择]Please read the passages and choose A, B, C or D to best complete the statements about them.
The Quiet Crisis
Close games for the Americans were rare in previous Olympics, but now it appears to be something the Americans should get used to.
You could find no better metaphor for the way the rest of the world can now compete head-to-head more effectively than ever with America than the struggles of the U. S. Olympic basketball team in 2004. The American team, made up of NBA stars, limped home to a bronze medal after losing to Puerto Rico, Lithuania, and Argentina. Previously, United States Olympic basketball team had lost only one game in the history of the modern Olympics. Remember when America sent only NCAA stars to the Olympic basketball events For a long time these teams totally dominated all corners. Then they started getting challenged. So we sent our pros. And they started getting challenged. Because the world keeps learning, the diffusion of knowledge happens faster; coaches in other countries now download American coaching methods off the Internet and watch NBA games in their own living rooms on satellite TV. Many of them can even get ESPN and watch the highlight reeds. And thank to the triple convergence, there is a lot of new raw talent walking onto the NBA courts from all over the world—including many new stars from China, Latin America, and Eastern Europe. They go back and play for their national teams in the Olympics, using the skills they honed in America. So the automatic American superiority of :wenty years ago is now gone in Olympic basketball. The NBA standard is increasingly becoming a global commodity—pure vanilla. If the United States wants to continue to dominate in Olympic basketball, we must, in that great sports cliche, step it up a notch. The old standard won"t do anymore. As Joel Cawley of IBM remarked to me, "
Star for star
, the basketball teams from places like Lithuania or Puerto Rico still don"t rank well versus the Americans, but when they play as a team—when they collaborate better than we do, they are extremely competitive."
There is something about post-World War II America that reminds me of the classic wealthy family that by the third generation starts to squander its wealth. The members of the first generation are nose-to-the-grindstone innovators, the second generation holds it all together then their kids come along and get fat, dumb, and lazy and slowly squander it all. I know that is both overly harsh and a gross generalization, but there is, nevertheless, some truth in it. American society started to coast in the 1990s, when our third postwar generation came of age. The dot-com boom left too many people with the impression that they could get rich without investing in hard work. All it look was an MBA and a quick IPO, or one NBA contract, and you were set form life. But while we were admiring the flat world we had created, a lot of people in India, China, and Eastern Europe were busy figuring out how to take advantage of it. Lucky for us, we were the only economy standing after World War II, and we had no serious competition for forty years. That gave us a huge head of steam but also a huge sense of entitlement and complacency—not to mention a certain tendency in recent years to extol consumption over hard work, investment, and long-term thinking. When we got hit with 9/11, it was a once-in-a-generation opportunity to summon the nation to sacrifice, to address some of its pressing fiscal, energy, science, and education shortfalls—all the things that we had let slide. But our president did not summon us to sacrifice. He summoned us to go shopping.
The truth is, we are in a crisis now, but it is a crisis that is unfolding very slowly and very quietly. It is a quiet crisis and this quiet crisis involves the steady erosion of America"s scientific and engineering base, which has always been the source of American innovation and our rising standard of living.
"The sky is not falling, nothing horrible is going to happen today," said Jackson, a physicist by training who chooses her words carefully. "The U. S. is still the leading engine for innovation in the world. It has the best graduate programs, the best scientific infrastructure, and the capital markets to exploit it. But there is a quiet crisis in U. S. science and technology that we have to wake up to. The U. S. today is in a truly global environment, and those competitor countries are not only wide awake, they are running a marathon while we are running sprints. If left unchecked, this could challenge our preeminence and capacity to innovate."
And it is our ability to constantly innovate new products, services, and companies that has been the source of American"s horn of plenty and steadily widening middle class for the last two centuries. It was American innovators who started Google, Intel, HP, Dell Microsoft, and Cisco, and it matters where innovation happens. The fact that all these companies are headquartered in America means that most of the high-paying jobs are here, even if these companies outsource or offshore some functions. The executives, the department heads, the sales force, and the senior researchers are all located in the cities where the innovation happened. And their jobs create more jobs. The shrinking of the pool of young people with the knowledge skills to innovate won"t shrink our standard of living overnight. It will be felt only in fifteen or twenty years, when we discover we have a critical shortage of scientists and engineers capable of doing innovation or even just high-value-added technology work. Then this won"t be a quiet crisis anymore, said Jackson, "it will be the real McCoy."
Today Americans are feeling the gradual and subtle effects of globalization that challenge the economic and strategic leadership that the United States has enjoyed since World War II. A substantial portion of our work-force finds itself in direct competition for jobs with lower-wage workers around the globe, and leading-edge scientific and engineering work is being accomplished in many parts of the world. Thanks to globalization, driven by modern communications and other advances, workers in virtually every sector must now face competitors who live just a mouse-click away in Ireland, Finland, China, India, or dozens of other nations whose economies are growing. This has been aptly referred to as "
the Death of Distance
".The title of this passage "The Quiet Crisis" suggests that______.
A. the crisis that the U S. faces is seen clearly
B. the U. S. is not yet in a crisis
C. the crisis that the U. S. faces unfolds very quickly
D. the current crisis develops slowly
[单选题]发现道岔故障或被挤坏后,为不中断行车,可由()人员将道岔扳向未挤坏一侧,钉固后准许使用
A.扳道
B.道岔清扫
C.工务、电务
D.信号
[单项选择]（）以下何人长着满脸麻皮？
A. 殷无福
B. 殷无禄
C. 殷无寿
D. 殷无安
[单项选择]扶梯与人行道的出入口，在维修时应该要有（）防止发生事故。
A. 醒目的警告标志
B. 纸张通知
C. 放个阻挡物
D. 旗帜
[判断题]电子商业汇票已逾期提示付款的，持票人（或与其签有协议的接入行、接入财务公司）在做出说明后仍可向承兑人发出逾期提示付款申请，逾期提示付款可在票据到期日后3年内发起。
A.正确
B.错误
[单选题] 社团贷款借款人一般应提前()工作日向代理社提交提款通知书。
A.3个
B.5个
C.7个
[填空题]运营突发事件应急机构由 、 、 三部分组成。
[单选题]
一般网络舆情事件包含普通( )及非热门( )等互联网站发布有关消防的负面信息。
A. 微信和微博,视频、图片
B. 腾讯和搜狐,文字、论坛
C. 博客和微博,论坛、贴吧
D. 博客和微博,短信、彩信
[单选题]关于引气压力表和传感器下列说法不对的是
A.最大刻度为80PSI
B.两个指针独立
C.都由同一保险电门供电
D.左右压力传感器可以互换
[填空题]尖轨眼端轨组过大,间隔铁和夹板磨耗,螺栓松动,过车时加大了冲击,是产生尖轨眺动的原因之一,可采用焊补成更换间隔铁、夹板,（ ）磨耗的双头螺栓的方法来整治,
[单项选择]要建立( )，通过治安信息的收集与分析，不断提高对治安危害的预见性，加强超前控制。
A. 群防群治制度
B. 预警制度
C. 110报警制度
D. 警民联系卡制度
[单项选择]（），系指为防止施工过程中工程工伤事故和职业病的危害而从技术上采取的措施。
A. 安全技术措施
B. 施工技术
C. 施工方案
D. 安全评价
[判断题]《要求复议意见书》一式三份,一份附卷,一份交检察院,一份交给法院
A.正确
B.错误
[单选题] "在采用电话闭塞法行车时,列车占用区间的凭证是路票,列车司机凭车站行车人员的发车手信号动车,凭车站行车人员的停车手信号停车,列车发车时与前车间隔应满足( )。"
A. 一站一区间空闲
B.一站两区间空闲
C.两站两区间空闲
D.两站一区间空闲
[多选题]大型养路机械施工作业验收主要项目包括（）等。
A.清筛
B.起道
C.拨道
D.捣固
E.动力稳定
F.钢轨打磨
[单选题] 在110(66)kV带电运行区域内正常工作,作业人员与带电设备的安全距离应不小于( )m (1.0分)
A. 0.7
B. 1
C. 1.5
D. 2
[多选题]智能运输系统带来的巨大社会经济效益可以从以下几个主要方面体现:( )。
A.减少效能拥挤和行车延迟
B.带动未来新兴产业群
C.减少交通事故的发生率、死亡率
D.能源消耗量减少污染程度降低
E.带动未来的高新技术
[多选题]明确中国特色社会主义事业总体布局是“五位一体”、战略布局是 “四个全面”,强调坚定( )。
A.道路自信
B.理论自信
C.制度自信
D.文化自信
[单选题]TMS中告警操作台中红色告警代表哪个告警等级？
A.重要
B.提示
C.紧急
D.严重
[单选题]自动喷水灭火系统玻璃球洒水喷头公称动作温度68℃时,工作液色标为()色。
A.橙
B.红
C.黄
D.绿
[简答题]汽轮机旁路排放系统（MAN）的主要功能是什么？
[单项选择]2011年3月1日晚央行宣布25日起上调存款类金融机构人民币存款准备金率0.5个百分点。这是2011年第（）次上调存款准备金率也是自去年初以来的第（）次上调。
A. 四；八
B. 三；九
C. 二；八
D. 一；九
[单选题]在焦糖汁的调制中,由于糖有( ),而产生焦糖,焦糖可产生令人悦目的色泽与风味。
A.结晶性
B.吸潮性
C.分子不稳定性
D.热敏感性
[单选题]压力容器运行中防止（）和介质泄漏，是防止事故发生的根本措施。
A.超温、超压
B.充装过量
C.介质流量过大
[多选题]一、二级动火工作票签发人应是经本单位考试合格，并经本单位批准且公布的有关部门（）。
A.负责人
B.技术负责人
C.有关班组班长
D.经本单位批准的其他人员
[判断题]调车灯显使用中，禁止手提天线，禁止在未安装天线的情况下接收、发射信令，禁止长时间按压送话键对调车作业产生干扰，随时注意自检信号，发现无自检信号时，立即停车查明原因，禁止使用无线调车灯显设备手持台闲谈和从事与工作无关的事情。
A.正确
B.错误
[单选题]制冷设备操作安全管理包括( )。
A.设备的使用和维护保养
B.设备的安全措施与事故处理
C.设备日常维护保养规程
[单选题]液力变矩器的传动功率( )机械传动。
A.大于
B.小于
C.等于
[单选题]短期接触电磁场电磁场对人体的伤害作用( )逐渐消除。
A.不确定
B.不可以
C.可以
