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[单选题]4.163. 第163题
两只单相电压互感器V/V接法,测得Uab=Uac=100V,Ubc=173V,则可能是( )。
A.一次侧A相熔丝烧断
B.一次侧B相熔丝烧断
C.二次侧熔丝烧断
D.一只互感器极性接反
[单项选择] If you feel tired all the time, you don’’t necessarily need to go to bed earlier ---- the solution could be as simple as taking a five-minute afternoon nap.
Children under five have an abundance of energy and one of the reasons is because they nap once or twice a day. Many sleep experts think we’’re programmed to take a nap during the day, and getting back into this habit can be a solution for those who feel tired all the time.
Prof. Chris Idzikowski of the Sleep Advisory and Assessment Center thinks that one can feel refreshed after just five minutes sleep. And research has shown that concentration and attention are improved after even a short nap.
Sleep is genetically programmed in babies and it’’s only as we get older that we learn to sleep for about eight hours a night and not at all during the day. But most research suggests that we are not physically designed to sleep for one long, single block.
Before the working day became nine to five, all Western sleep
A. Improvement of concentration.
B. Improvement of attention.
C. Refreshment.
D. Nice appearance.
[简答题]一个高为5M,内径3M,锥底高0.3M的油罐,最多能装密度为0.87克/立方厘米的汽轮机油?
[单项选择] Recent research had claimed that an excess of positive ions in the air could have an ill effect on people’’s physical or psychological health. What are positive ions Well, the air is full of ions, electrically charged particles, and generally there is a rough balance. If the balance becomes disturbed and a larger proportion of positive ions are found. This happens naturally before thunderstorms, earthquakes or when winds such as the Mistral, Foehn, Hamsin or Sharav are blowing in certain countries. Or it can be caused by a build-up of static electricity indoors from carpets or clothing made of man-made fibers, or from TV sets, duplicators or computer display screens.
When a large number of positive ions are present in the air many people experience unpleasant effects such as headaches, fatigue, irritability, and some particularly sensitive people suffer nausea or even mental disturbance. Animals are also found to be affected, particularly before earth- quakes; snakes have bee
A. using home-made electrical goods
B. wearing clothes made of natural materials
C. walking on artificial floor coverings
D. sorting food in a refrigerator
[单选题]15.对先天性心脏病诊断具有确诊意义的无创伤性检查方法是
A.X线检查
B.心电图检查
C.超声心动图检查
D.心导管和心血管造影
E.放射性核素的心血管造影
[单选题]法制教育最重要的时期是 (3分)
A.. 婴儿期
B.. 幼儿期
C.. 学龄前期
D.. 学龄期
E.. 青春期
[判断题]VOBC也会提供倒溜保护,并在列车倒退超过10m时命令紧急制动()
A.正确
B.错误
[单项选择]编制资源消耗计划的依据中,()是编制资源计划的基本依据。
A. 资源储备说明
B. 范围说明书
C. WBS
D. 进度计划
[单选题]邻近营业线进行可能因翻塌、坠落等意外而危及营业线行车安全的工程施工,列为( )施工。
A.A类
B.B类
C.C类
D.D类
[填空题]电流通过人体叫( )。人体触电方式有以下几种:( )、( )、跨步触电、高压电场对人体的伤害、静电对人体的伤害、雷电。
[单选题]ZYJ7分动外锁闭道岔启动电路定位启动和反位启动电路分别用三条线来控制,定位到反位用()控制。
A.X1、X2、X4
B.X1、X3、X5
C.X1、X2、X5
D.X1、X3、X4
[单选题]国家电网有限公司“十四五”发展,必须坚持系统观念,做到“四个统筹好”,统筹好政治经济社会“三大责任”,统筹好().统筹好监管和非监管“两类业务”,统筹好管好和放活“两个取 向” 单选题
A.利润和成本“两件大事”
B.质量和效率“两件大事”
C.发展和安全“两件大事”
D.规模和效益“两件大事”
[单项选择]This story is mainly about ______.
A. the distance between the sun and the other stars
B. the problems of traveling to faraway stars
C. what happens when we travel faster than the speed of light
D. the tool we use when we measure the distance of faraway stars
[多选题]利用钻头旋转时产生的( )作用破碎岩石,是当前最通用的钻井方法。
A.切削
B.切割
C.研磨
D.碾磨
[多选题]现代市场经济的基本特征包括( )。
A.发达的要素市场
B.市场的国际化
C.规范的现代企业制度
D.高度的法制化
E.经济增长稳定
[单选题]( )是一项从属于主要合同的承诺,是保险人接受承保或承担保险责任所需投保人或被保险人履行某种义务的基本条件。
A.说明
B.告知
C.保证
D.弃权与禁止反言
[简答题]为了将本企业经济活动与其他企业经……建立的基本前提是( )。
[判断题]进入济南局集团有限公司以外电气化铁路区域的人员,对所有牵引供电设备均应视为带电,必须严格遵守《中国铁路济南局集团有限公司电气化铁路有关人员电气安全细则》(济铁供〔2021〕148号)相关规定。
A.正确
B.错误
[简答题]黏度指数反映了油的黏度随变化的特性。(1.0分)
[判断题](190)蒸发器单位传热面积每小时所能蒸发溶剂的千克数,称为蒸发器的生产强度。( )
A.正确
B.错误
[多选题]什么情况下,任何人不准进行攀登训练?( )
A.组训人员、安全员不到位
B.训练场地、器材不符合安全要求
C.未做热身活络操前
D.防护措施不落实时
[单选题]电力机车撒沙量的调整:调整螺栓的调整量是10mm,撒沙量以( )为宜。
A.1~2g/s
B.2~3g/s
C.1~2kg/min
D.2~3kg/min
[单选题]依据《中国南方电网有限责任公司电力安全工作规程》(Q/CSSG 510001-2015)第3.23条规定:双重称号指同杆架设两回及以上线路的名称和( )。
A.位置称号
B.电压等级
C.线路类型
D.相序分布
[单项选择]S700K电动转辙机的单线圈电阻不大于()。
A. 50Ω
B. 54Ω
C. 58Ω
D. 64Ω
[多选题]影响外环境的因素有( )
A.气候变化
B.地域特点
C.生活环境
D.工作环境
E.社会环境
[判断题]《铁路旅客运输管理规则》中规定,乘务组的主要工作,列车员通告站名、组织旅客安全乘降,对重点旅客做到重点照顾。
A.正确
B.错误
[单选题]TCP4-008/600(L)型DC110V充电机微机板指示灯具有一定的含义:如果VL0灭,VL6亮,表示()。
A.IGBT保护
B.接触器KM1故障
C.系统过热
D.输出过压(硬件)
[单选题]可燃气体报警后的处理方法错误的是( )。
A.操作人员立即到现场检查有无大泄漏点
B.操作人员立即到现场检查有无连续排放
C.必要时作好灭火准备
D.装置立即停车检查漏点
[填空题]TYJL-Ⅱ型计算机联锁,总线电流提供( )系统工作电流。
[单选题] 一般缺陷的处理时限为( )。
A. 一个月;
B.三个月;
C. 一年;
D.六个月。
[单项选择]最先提出科学管理理论的代表人物是()。
A. 法约尔
B. 韦伯
C. 甘特
D. 泰罗
[单选题]境内某公司从香港购进孟加拉国产的某商品一批,设该商品的最惠国税率为10%, 普通税率为30%,亚太协定税率为9.5%,香港CEPA项下税率为0,该商品进口时适用的税率是( )。
A.10%
B.30%
C.9.5%
D.0
[判断题]遂行马蜂窝摘除任务,应评估其周边环境条件,疏散现场围观群众,提示附近住户关闭门窗。( )
A.正确
B.错误
[单选题]在入党、考录干部、选送院校培养、选取消防士(长)、选学技术和评功评奖等问题上,做到名额、条件、程序和结果( )。
A.保密
B.隐藏
C.公开
D.公平
[判断题] 内部市场人员配置方式:主要包括岗位竞聘、挂职(岗)锻炼、人才帮扶、劳务协作、人员借用、组织调配等6种。()
A.正确
B.错误
[多项选择]国际商务谈判中的个体心理特征主要表现为()
A. 个性
B. 情绪
C. 态度
D. 印象
E. 知觉