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[多选题]站台门设备电源系统的UPS主要由 ( ) 部分组成的AC-DC-AC变换 主回路、 由两组反向并联的可控硅 组成的旁路静态开关、维修旁路空 开、输出隔离变压器和静态开关、 蓄电池组以及输入/输出空开等。
A.AC-DC转换装置 (冗余配置)
B.整流模块 (REC)
C.ATS (交流自 动切换装置)
D.逆变模块 (INV)

热门试题:

[多选题]对于退出服务列车及自身动力转轨的电客车停放到位后,由电客车司机( )。
A.施加停放制动
B.并关闭客室门
C.降弓
D.分断蓄电池
E.锁闭所有司机室侧门
F.将车辆交给检修人员
[单选题]根据下面资料,回答 Bum rate is the speed at which a start up business consumes money. My rate would be $50,000 a month when my new media company started. So, I began looking around for individuals who would be my first investors. "Angel money" it was called. But when I reviewed my list of acquaintances to find those who might be able to help, I found the number got small. With no other choices, I began meeting with the venture-capital companies. But I was warned they took a huge share of your company for the money they put in. And if you struggled, they could drop you cold. As I was searching for "angel money", I started to build a team who trusted me even though I didn′t have money for paying checks yet. Bill Becker was an expert in computer programming and image processing at a very famous Media Lab at M.I.T. With his arrival, my company suddenly had a major technology "guy" in-house. Katherine Henderson, a film maker and a former real-estate dealer, joined us as our director of market research. Steve White came on as operating office. He had worked for the developer of a home-finance software, Quicken. We grabbed him. We had some really good people, but we still didn′t have enough money. One night, my neighbor, Louise Johnson, came for a visit. She and I were only nodding acquaintances, but her boys and ours were constant companions. She ran a very good business at the time. Louise was brilliant and missed nothing. She had been watching my progress closely. She knew I was dying for money and I had prospects but could offer no guarantees of success. She told me that her attorney had talked to mine and the terms had been agreed upon. She handed me an envelope. Inside was a check for $500,000. I almost fell down. I heard her voice as if from heaven. "I have confidence in your plan," she said. "You′ll do well. You′re going to work for it, but it′ s satisfying when you build your own company." Who could have thought I′ d find an angel so close to home? There were no words sufficient for the moment. We just said good night. She left and I just stood there, completely humbled and completely committed. By ′,Angel money", the author refers to _____________.
A.the money borrowed from banks
B.the money spent to promote sales
C.the money raised from close friends
D.the money needed to start a business
[单选题]结肠癌的好发部位,多见于( )
A.降结肠
B.盲肠
C.升结肠
D.乙状结肠
E.横结肠
[判断题] ( )道岔有单独锁闭、 区段锁闭、 进路锁闭及引导总锁闭等四种方式。
A.正确
B.错误
[单选题]当日本宾客到茶艺馆品茶时,茶艺师应注意不要使用( )图案的茶具。
A.荷花
B.龙凤
C.樱花
D.鱼龙
[单选题]一个IP地址为162.1.255.255,从以下几种说法中选一种最准确的说法是( )。
A. 是一个B类地址
B. 是一个在网络号为162.1的网段中直接广播的地址
C. 是一个一般地址
D. 是一个特殊地址
[多项选择]税收管理的特征()。
A. 社会性
B. 适应性
C. 规范性
D. 服务性
[单项选择]某分部工程有甲、乙、丙三个施工过程,分4段施工,甲施工过程的流水节拍是3周、5周、2周、4周,乙施工过程的流水节拍是4周、3周、3周、3周、丙施工过程的流水节拍是5周、2周、4周、2周,为了实现连续施工,乙、丙两施工过程间的流水步距应是 ( )周。
A. 3
B. 4
C. 5
D. 6
[单选题] 蓝色安全帽为( )人员使用。
A.管理;
B.运行;
C.检修(施工、试验);
D.检查。
[多选题]、下列关于公安机关办理治安案件所查获的物品的处理方法错误的是()
A. 查获的毒品、淫秽物品等违禁品,应当收缴,按照规定处理
B. 查获的赌具、赌资,吸食、注射毒品的用具以及直接用于实施违反治安管理行为的所有工具,应当收缴,按照规定处理
C. 违反治安管理所得的财物,收缴退还被侵害人
D. 违反治安管理所得的财物,没有被侵害人的,登记造册,公开拍卖或者按照国家有关规定处理,所得款项上缴国库
[单选题](类别:号段管理 难度:中等)UNIX操作系统是著名的( )。 ( )
A.多道批处理系统
B.分时系统
C.实时系统
D.分布式系统
[单项选择]依据供应商评价的各项指标,按供应商的优劣档次,分别对各供应商进行评分,选得分高者为最佳供应商的供应商选择方法称为( )。
A. 直观判断法
B. 评分法
C. 采购成本比较法
D. 招标采购法
[多选题]火情侦察的内容()。
A.火源(泄漏点)位置、燃烧(泄漏)物质性质、燃烧(泄漏)范围和火势蔓延(泄漏扩散)的主要方向。
B.火场内有无被困或遇险人员,及其所在位置、数量;疏散途径的位置及安全性。
C.有无爆炸、毒害、腐蚀、遇水燃烧等物质,及其数量、存放形式和具体位置。
D.燃烧的建(构)筑物的结构特点,及其毗邻建(构)筑物的状况,是否需要破拆;有无带电设备,是否需要切断电源。
[简答题]试述目标管理的过程及其优缺点。
[填空题] 作业现场为两个及以上单位综合利用天窗在同一区间作业时,由()指定作业主体单位,明确主体作业负责人。《普速铁路工务安全规则》第2.1.8条
[单项选择]下列4条叙述中,有错误的一条是
A. 通过自动(如扫描)或人工(如击键、语音)方法将汉字信息(图形、编码或语音)转换为计算机内部表示汉字的机内码并存储起来的过程,称为汉字输入
B. 将计算机内存储的汉字内码恢复成汉字并在汁算机外部设备上显示或通过某种介质保存下来的过程,称为汉字输出
C. 将汉字信息处理软件固化,构成一块插件板,这种插件板称为汉卡
D. 汉字国标码就是汉字拼音码
[单选题]动车组广播中,餐饮供应广播时长不超过( )秒。
A.30
B.60
C.80
D.120
[单选题]使用普通车运输时,20、40英尺冷藏集装箱按“铁路货物运价率表”规定的集装箱运价率执行,45英尺冷藏集装箱按“铁路货物运价率”规定的40英尺集装箱运价率加成( )。
A.10%
B.20%
C.30%
D.40%
[单选题]Repair Kit是指
A.手电筒
B.修补钳
C.急救箱
D.应急医疗箱
[判断题]在屋顶及其他危险的边沿工作,临空一面应装设安全网或防护栏杆,否则,作业人员应使用安全带。
A.正确
B.错误
[单项选择]梗塞后心绞痛患者容易发生()
A. 梗塞延展
B. 心绞痛
C. 室壁瘤
D. 栓塞
E. 再梗死
[单选题]为了孩子的学习环境而三迁居的是哪个历史故事?( )
A.孟母教子
B.举案齐眉
C.岳母刺字
[多选题]沈阳地铁一号线具备( )折返模式。
A.无司机的ATO自动折返模式
B.有司机的ATO自动折返模式
C.有ATP防护的人工折返模式
D.有iATP防护的人工折返模式
[判断题]轨道车运用单位应制定细化GYK设备运用管理的各项制度、检查考核办法等,并严格执行。
A.正确
B.错误
[判断题]新中国宣布成立后,中国政府宣布愿意同世界上一切国家无条件建立外交关系。
A.正确
B.错误
[填空题]

Employers fear they will be unable to recruit students with the skills they need as the economic recovery kicks in, a new survey (1) . Nearly half of the organisations told researchers they were already struggling to find (2) with skills in science, technology, engineering and maths (STEM), (3) even more companies expect to experience (4) of employees with STEM skills in the next three years. The Confederation of British Industry (5) 694 businesses and organisations across the public and (6) sectors, which together employ 2.4 million people. Half are (7) they will not be able to fill graduate posts in the coming years, while a third said they would not be able to (8) enough employees with the right A-level skills. " (9) we move further into recovery and businesses plan (10) growth, the demand for people with high-quality skills and qualifications will (11) ," said Richard Lambert, Director General, CBI. "Firms say it is already hard to find people with the right (1

[单选题]党的八大正确分析了社会主义改造完成后我国社会主要矛盾的变化,提出今后党和国家的工作重点是()
A. 调动一切积极因素,为社会主义事业服务
B.正确处理人民内部矛盾,巩固社会主义制度
C.集中力量发展生产力,建设社会主义现代化强国
D.技术革命和社会主义建设
[单项选择]有一矩形断面渠道底宽b=2m,底坡i=0.0004,糙率n=0.012,当槽中均匀流水深h0=1.5m时。水力半径为()m。
A. 0.4
B. 0.6
C. 0.9
D. 1.5
[单选题].卵巢肿瘤最常见的并发症是( )
A.恶性变
B.破裂
C.感染
D.蒂扭转
E.与组织粘连
[单选题]对66~( )kV电压等级变压器,在新安装时应抽样进行空载损耗试验和负载损耗试验。
A.110
B.220
C.750
D.200
[填空题]水泵轴的弯曲不应超过0.1mm,当超过0.1mm时,应进行()。
[多项选择]我国水资源是相当紧张的。因此,______等是改变目前我国水资源状况的重要手段,也是实现我国社会主义经济可持续发展的重要条件。
A. 保护水源
B. 治理污染
C. 节约用水
D. 合理开发利用水资源
[单项选择]静脉输液时,茂菲滴管内液面自行下降,其原因是
A. 输液管有裂隙
B. 病人肢体位置不当
C. 压力过大
D. 输液管口径粗
E. 输液速度过快
[多项选择]房屋施工面积指报告期内施工的全部房屋建筑面积,包括( )。
A. 本期新开工的面积
B. 上年开工跨入本期继续施工的房屋面积
C. 上期已停建在本期恢复施工的房屋面积
D. 本期未竣工面积
E. 本期施工后又停建缓建的房屋面积
[判断题]当人体的视锥细胞功能障碍时,将会出现夜盲症。
[单选题]不属于车载子系统驾驶模式?
A.BM-ATP
B.BM-ATO
C.NRM
D.CBTC-ATP
[单选题]在距牵引供电设备高压带电部分2m 以外,与回流线、架空地线、保护线lm 以外,()作业时,牵引供电设备可不停电,但须按照铁路营业线施工安全管理有关规定执行。
A.邻近铁路营业线
B.室外
C.点内
D.点外

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