热门试题:
[单选题]FX2N 系列继电器输出型 PLC 不可以( )。
A.输出高速脉冲
B.直接驱动交流指示灯
C.驱动额定电流下的交流负载
D.驱动额定电流下的直流负载
[判断题] 操作柱上充油断路器(开关)或与柱上充油设备同杆(塔)架设的断路器(开关)时应防止充油设备爆炸伤人。( )
A.正确
B.错误
[单选题]砍剪山坡树木应做好防止树木向（）弹跳接近导线的措施。
A.下
B.上
C.左
D.右
E.略
F.略
[单选题]下列能够加重哮喘的抗心律失常药物是
A.奎尼丁
B.利多卡因
C.胺碘酮
D.β受体拮抗药
E.腺苷
[单选题]1视频服务器能实现对系统内所有（ ）及录像存储设备的统一管理。
A.编码器
B.解码器
C.编解码器
D.传输
[判断题]行车有关人员，接班前须充分休息，严禁饮酒，如有违反，立即停止其所承担的任务。
A.正确
B.错误
[判断题]手工电弧堆焊时,常选用小电流,短弧堆焊。
A.正确
B.错误
[单选题](47533)混凝土宽枕采用密铺式,每千米铺( )根。(1.0分)
A.1667
B.1680
C.1760
D.1840
[单项选择]关于数据库系统中的数据的静态转储和动态转储机制，下述说法正确的是______。
A. 静态转储时允许其他事务访问数据库
B. 动态转储时允许在转储过程中其他事务对数据进行存取和修改
C. 静态转储能够保证数据库的可用性
D. 动态转储无法保证数据库的可用性
[单选题]开展群众性文体活动时，要做到队列集会有歌声、( )。
A.重大节日有晚会、每月体育有比赛
B.每月体育有比赛
C.周末假日有活动、重大节日有晚会、每月体育有比赛
D.周末假日有活动、每月体育有比赛
[单选题]点型感温火灾探测器的动作温度一般在54°C~78°C范围内,进行试验时,气流温度应大于()°C。
A.70°C
B.98°C
C.78°C
D.80°C
[判断题]装有无线调车灯显设备接口的机车，在调车作业中必须与无线调车灯显设备连接配套使用，确保无线调车灯显设备发出的调车指令纳入LKJ控制。
A.正确
B.错误
[单选题]道岔前端与另一道岔后端相连时，允许速度不大于120km/h的线路，尖轨尖端轨距递减率如不能按6‰递减时，可加大前面道岔的辙叉轨距为( )。
A.1437mm
B.1441mm
C.1450mm
D.1453mm
[判断题]1.134. 第134题
营业外收入主要是指客户违章用电的违约使用电费和客户迟交电费产生的违约金。
A.正确
B.错误
[单选题]电力机车撒砂量调整时调整螺栓的调整量是( ),撒砂量以2～3kg/min为宜。
A.5mm
B.10mm
C.15mm
D.20mm
[单项选择]在油（气）油田水处理中，常用的调节pH值的药剂为（）。
A. 烧碱
B. 氢氧化钙
C. 碳酸氢钠
D. 硫酸钙
[单选题]（ ）不是反映嵌入式实时操作系统实时性的评价指标。
A.任务执行时间
B.中断响应和延迟时间
C.任务切换时间
D.信号量混洗时间
[判断题]墙面抹灰的施工工艺流程为：基层处理→湿润墙面→阴阳角找方→设置标筋→抹底层灰→抹中层灰→抹面层灰（）
[判断题]Windows操作系统不断升级从最开始的8位、16位、32位到现在的64位操作系统。( )(易)(第一篇:基础公共部分 第二章 基础知识 第一节 计算机基础知识)
A.正确
B.错误
[多选题]发现( )和车站交接旅客等人员，会同乘警对其人身和携带物品要全面检查，核查身份，发现问题及时处理和上报。
A.上访人员
B.无票乘车
C.越站乘车
D.行为神情异常
E.重点关注
[判断题]热量从管子的外壁传向内壁的过程叫导热。( )
A.正确
B.错误
[简答题]装置交付使用前为何进行吹扫，气密，氮气置换？
[判断题]杆塔组装，组装构件连接对孔时，严禁将手指伸入螺孔找正。（ ）
A.正确
B.错误
[判断题]5S活动是一项持之以恒的活动,不能坚持的话,5S活动难以成功,若脚踏实地加以改善,则5S活动将逐见功效。( )
A.正确
B.错误
[判断题]“四不放过”原则是事故原因没有查清不放过；防范措施没有落实不放过；事故责任者没有严肃处理不放过；广大员工没有受到教育不放过。
A.正确
B.错误
[单选题]事故发生单位及其有关人员有谎报或者瞒报事故行为的，对事故发生单位及主要负责人、直接负责的主管人员和其他直接责任人员如构成犯罪的，将（ ）。
A.处以罚款
B.依法追究刑事责任
C.依法给予处分
D.依法给予治安管理处罚
[单项选择]女性，35岁，因家庭纠纷赌气服用农药200ml，30分钟后出现头痛、头晕、嗜睡、恶心、发绀，2小时出现昏迷及血尿、少尿。查体：浅昏迷，发绀明显，双侧瞳孔3mm，对光反射存在，两肺可闻及少许干、湿啰音，血压140／70mmHg，心率110次／分，心脏听诊可闻及期前收缩。尿常规：RBC（+++），WBC（+），蛋白（++），镜下可见颗粒管型，血肌酐286μmol／L，血钾5.8mmol/L。为确诊应首选哪一项实验室检查（）.
A. 血胆碱酯酶活力测定
B. 尿中4-氯-邻甲苯胺含量测定
C. 血清单胺氧化酶测定
D. 血中高铁血红蛋白测定
E. 肝、肾功能测定
[多选题]进入各式（ ）等容器内部工作前，应打开各孔口进行通风换气。如系盛装易燃易爆、有毒有害物品的在用容器，应先冲洗置换，再用通风或吸尘装置进行通风换气，把易燃易爆或有毒有害气体排除干净。如在容器内工作过程中须接触过敏性的物质，应采取强力通风措施。
A.A.箱
B.B.桶
C.C.槽
D.D.罐
[单项选择]下列______是面向大型企业级用容器管理专用构件的应用平台。
A. J2EE
B. J2SE
C. J2ME
D. J2DE
[单选题]身上着火后,下列哪种灭火方法是错误的( )
A.就地打滚
B.用厚重衣物覆盖压灭火苗
C.迎风快跑
D.有条件跳到水里
[单选题] 行政机关依法对被许可人从事行政许可事项的活动进行监督检查时， 应当将监督检查的情况和处理结果予以（）， 由（）签字后归档。
A.通报； 监督检查人员
B.记录； 监督检查人员
C.分析； 被许可人
D.公布； 被许可人
[多选题]碱性氧化物有（ ）。
A.CaO
B.MgO
C.SiO2
D.Al2O3
E.MnO
[单选题]肝上界在右锁骨中线处相交于、
A.第4肋
B.第5肋
C.第4肋间隙
D.第5肋间隙
E.第6肋
[多选题]下列（ ）情况发生变化时，应当及时修订战备方案。( )
A.编制
B.人员
C.装备器材
D.形势任务
E.工作性质
[单选题]Text 3 University used to be for a privileged few.In some countries it is now almost a rite of passage.Although that is excellent news,rew countries have worked out how to pay for it.In some of continental Europe,where the state often foots the bill,the result has usually been under investment.In America,where students themselves pay,many have little choice but to take on huge debts.English policymakers thought they had struck the right balance,with a mix of student fees and generous state loans.But,nearly two decades after youngsters were first required to contribute to tuition costs,the system has dwindling support at home.Jeremy Corbyn,Labour's leader,speaks as though it were designed to keep the poor from spoiling the ivory towers.He has called for an end to the"debt burden"on students,and has claimed that"fewer working-class young people are applying to university,"Labour's showing at the recent election suggests many young voters agree.Mr Corbyn's argument betrays a disregard for the facts and a poor understanding of student finance.Twenty years ago English students could go to university free,with the state covering the cost.The result was many struggling institutions and strict limits on the numbers of students universities were allowed to take.Annual tuition fees allowed an expansion of higher education,from around 30%of 18-year-olds to more than 40%-and the proportion of youngsters going to university from poor parts of the country has grown from one-in-ten to three-in-ten.That is because loans for tuition are combined with gentle repayment terms.Graduates only pay back based on their income above￡21,000 a year,meaning that their debts never become unmanageable.Outstanding loans are written off after 30 years.Critics argue that tuition fees aggravate inequality between generations（rich oldsters attended university free,after all）,but the alternative would be greater inequality within generations-as poorer students were once again frozen out when capacity fell,and relatively wealthy graduates were subsidised from general taxation.The real problem with the English system is not fairness,but that fees have not driven up standards.Almost all universities charge the maximum,whatever the course-not because they are a"cartel",but because no university wants to suggest that it offers a cut-price,second-rate degree.Nevertheless,surveys indicate that students have seen little improvement in teaching.One answer would be to promote competition by giving students better information.The government has relaxed the rules for new institutions in the hope that they will develop new teaching methods and drive down prices.It could also encourage students to hold universities to account,with devices such as learning contracts specifying what undergraduates should expect,and by helping them switch courses if they are dissatisfied.If students think they are not getting value for money,support for a scheme that is fair and progressive will dwindle.And that could lead to the most regressive step of all:scrapping tuition fees.
The author views Jeremy Corbyn's argument with______
A.iolerance
B.opposition
C.approval
D.uncertainty
[多选题]有关双轮异向切割锯的说法正确的有( )。
A.切割超硬金属
B.切割玻璃幕墙
C.使用时,锯不能前后随意移动
D.操作人员应佩戴切割手套
