热门试题:
[单项选择]
To live in the United States today is to gain an appreciation for Dahrendoff’s assertion that social change exists everywhere. Technology, the application of knowledge for practical ends, is a major source of social change.
Yet we would do well to remind ourselves that technology is a human creation; it does not exist naturally. A spear or a robot is as much a cultural as a physical object. Until humans use a spear to hunt game or a robot to produce machine parts, neither is much more than a solid mass of matter. For a bird looking for an object on which to rest, a spear or robot serves the purpose equally well. The explosion of the Challenger space shuttle and the Russian nuclear accident at Chernobyl drive home the human quality of technology; they provide cases in which well-planned systems suddenly went haywire and there was no ready hand to set them right, Since technology is a human creation, we are responsible for what is done with it. Pessimists worry that w
A. is used both as a cultural and a physical object
B. serves different purposes equally well
C. is utilized by man
D. cab be of use to both man and animal
[单项选择]患者，女，21岁，恒牙，磨牙完全Ⅱ类颌关系，前牙深覆Ⅲ°，深覆盖Ⅱ°，上牙列拥挤Ⅰ°，缺失，上前牙唇倾，上颌轻度前突，下颌位置基本正常，牙周情况良好最应采用何种矫治技术（）
A. “2×4”矫治技术
B. 方丝弓矫治技术
C. 多曲方丝弓矫治技术
D. Herbst矫治器
E. Activator矫治器
[多选题]质押担保的法律风险主要在于（ ）。[1分]
A.质押物的合法性
B.对于无处分权的权利进行质押
C.非为被监护人利益以其所有权进行质押
D.非法所得、不当得利所得的权利进行质押
E.未明确连带责任保证，追索的难度大
[判断题]根据闪点可将燃烧液体分为两类，闪点小于或等于45℃的称为易燃液体。( )
A.正确
B.错误
[单选题]一百年来，党领导人民，自信自强、守正创新，创造了_____的伟大成就。( )
A.新民主主义革命
B.社会主义革命和建设
C.改革开放和社会主义现代化建设
D.新时代中国特色社会主义
[填空题]韶山3 型电力机车轴箱轴圈热套时,其温度不得超过( )。
[单项选择]进行综合成本的分析，（）是施工项目成本分析的基础。
A. 月(季)度成本分析
B. 分部分项工程成本分析
C. 年度成本分析
D. 单位工程竣工成本分析
[判断题]附着式升降脚手架架体最底层需要全封闭防护。( )
A.正确
B.错误
[单选题]（ ）运行时，钩舌内侧面受力处易磨耗。
A.弯道
B.制动
C.推行
D.牵引
[单项选择]氧化锌丁香油糊剂不能用于
A. 直接盖髓
B. 垫底材料
C. 间接盖髓
D. 暂时封药
E. 根管充填糊剂
[单选题]由于直线长短腿基础的根开不同，长腿根开大，短腿根开小，相当于按(____)基础各分两个坑。
A.正方形
B.长方形
C.辅助桩
D.掏挖
[判断题]指挥机车向显示人方向来的手信号：昼间——展开的绿色信号旗在下部上下摇动（ ）。
A.正确
B.错误
[填空题] A fire is always exciting and dangerous. People crowd around to watch the smoke, the flames, and the fire fighters, who risk their lives to save others’’ lives. Fire fighters are in danger of burns and smoke injuries. (36) ________, they save thousands of lives and (37) ________ of dollars of property every year.
Fighting fires is not just risky. It is also very (38)________. Fire fighters do their jobs in rain or shine, (39)________it’’s 100 F or 20 F below zero. At a fire, they carry heavy gear up and down stairs or ladders. They search for (40)________people. They hack holes in the roof to (41)________smoke and gas. They hold hoses on the fire. The hoses are heavy, and the water in them shoots out under great (42) ________ . In fact, it usually takes two fire fighters to hold one hose.
Fire fighters also have many other duties. Sometimes they have to give first aid, and their (43)________must be kept in order. They must visit factories and public buildings to check f
[单选题]发行服务机构应对客户首次通行图片与发行信息进行全量比对,重点核查大车小标、货车客标、______等违规行为。
A.客车货标
B.假冒绿通
C.超限运输
D.非法安装
[单选题]作物的不同生育期对农药药剂的敏感性不同，一般来说（）
A.营养生长比生殖生
长敏感，易产生药害
B.生殖生长比营养生长敏感，易产生药害
C.苗期、花期、坐
果期比较敏感，易产生药害
D.以上都不正确"
[单选题] 经常有人工作的场所及施工车辆上宜配备急救箱,存放急救用品,并应()经常检查、补充或更换。
A.工作负责人
B.指定专人
C.专职监护人
D.安全员
[多选题]用机械牵引电缆时，牵引绳的安全系数不得（）。施工人员不得站在牵引钢丝绳（）。
A.小于3
B.小于6
C.内角侧
D.外角侧
[判断题]高压直流系统的停运，正常情况采用“正常停运”模式，只有在紧急时，采用“紧急停运模式”。
A.正确
B.错误
[多项选择]Directions: A statement goes that "both the development of technological tools and the uses to which humanity has put them have created modern civilizations in which loneliness is ever increasing." To what degree do you agree with this statement Write an essay of about 400 words.
In the first part of your essay you should state clearly your main argument, and in the second part you should support your argument with appropriate details. In the last part you should bring what you have written to a natural conclusion or make a summary.
You should supply an appropriate title for your essay.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.
[判断题]生产经营单位违反《山东省安全生产条例》规定进行危险作业的，责令限期改正，不可以罚款。
A.正确
B.错误
[判断题]遮断信号机设于需要防护的道口、桥梁、隧道的前方，指示列车在危急情况时停车。
A.正确
B.错误
[判断题]空气侵入液压系统,不仅会造成运动部件的“爬行”,而且会引起冲击现象。( )
A.正确
B.错误
[单选题]‘年9月28日起实施的车辆分公司《消防安全管理规定》中指出了消防安全责任人的职责，下列说法错误的是（）。
A.消防安全责任人要宣传贯彻国家和本市制定的消防法律法规、政府规章、技术规范标准和工作政策
B.消防安全责任人要检查消防工作方针、政策、法规的执行情况
C.消防安全责任人无需通报车辆分公司火灾形势和消防工作状况
D.消防安全责任人要根据上级要求，做好其他消防工作
[单选题]1.119 _______符合GB725国家标准及相关规定时,可以办理注册登记，领取机动车牌证后可以上道路行驶。
A.叉车
B.四轮摩托车
C.前面两个车轮、后面一个车轮的正三轮摩托车
D.特型机动车
[判断题]调节阀理想流量特性是指假定阀前后压差不变的情况下，介质流过阀门的相对流量与相对位移间的关系。( )
A.正确
B.错误
[单选题]各省公司需在故障消除后( )在EOMS上报消障信息。
A.30分钟
B.60分钟
C.90分钟
D.120分钟
[单选题]在三效催化转换器中,当废气经过净化器时,铑催化剂会促使( )还原为氮气和氧 气。
A.H2
B.HC
C.H2S
D.NOx
[单选题]消防手套配备标准为4副/人,备份比为1:1,若一中队执勤人数为40人,则该中队共需配备消防手套_____副。( )
A.200
B.240
C.300
D.320
[单选题]车站印章包括行车专用章、限速25km/h章、反方向运行章各( )个(1.0分)
A.1
B.2
C.3
D.4
[单选题]以下不属于三类票务事故的是（ ）
A.A、故意使用他人密码操作票务设备
B.B、违反车站边门管理办法，私自放行人员从边门出入
C.C、丢失车票（含纸票），成本、押金、余额合计 500 元以上 1000 元（含1000 元）及以下的
D.D、工作中违反相关规定，导致系统数据或监控录像等重要取证资料缺失或不全，影响三、四类事故嫌疑的调查取证
[多选题]在冒顶事故抢救处理中,必须有(),加强支护,防止发生二次冒顶;并且注意检查瓦斯及其他有害气体情况。
A.专人检查
B.安全检查工检查
C.监视瓦斯
D.监视煤层顶板
E.监视有害气体
[单选题]感应电压触电是由于带电设备的电磁感应和静电感应的作用，在附近的( )上感应出一定电位，当人体接触到该设备，且当电位差达到一定值而触电的现象。
A.停电设备
B.导体
C.导线
D.电器
[填空题]（驻站）联络员、<--NRC-->不得随意更换（连续作业按固定班次交接时除外）。
[判断题]紫罗兰根系切断后再生能力较弱，移栽时应多带土。
