热门试题:
[判断题]大型电力变压器强迫油循环风冷却装置二次回路要求,当冷却装置的工作电源及备用电源全部消失,冷却装置全部停止工作时,可根据变压器上层油温的高低,经一定时限作用于跳闸。( )
A.正确
B.错误
[单选题]下列临床表现中最不支持心绞痛诊断的是
A.疼痛可在睡眠中发生
B.含服硝酸甘油，疼痛在3～5分钟内缓解
C.疼痛易被运动或情绪激动诱发
D.反复出现的局限性心前区刺痛，每次持续仅2～3秒
E.疼痛在休息时发生，持续10分钟
[单选题]采取适当的措施,使燃烧因缺少氧气助燃而熄灭,这种灭火方法称为( )。
A.窒息灭火法
B.隔绝灭火法
C.降温灭火法
[单项选择]放射性质量（ ）
A. 表明放射性元素的蜕变情况
B. 表明放射性元素蜕变方式
C. 表明放射性元素发射粒子的种类
D. 表明放射性元素发射粒子的能量
E. 不能用克镭当量表示，只能用居里表示
[多选题]服务器病毒防治软件应该具有如下功能（ ）。
A.集中管理、监控和升级功能
B.病毒防治系统运行效率高
C.病毒防治系统价格低廉
D.能够提供对集中管理平台的接口，实现整体监控
[判断题]国际单位计量制，就是我国的法定计量单位。（ ）
A.正确
B.错误
[单选题]患者淡漠寡言,闷闷不乐,精神痴呆,喃喃自语,哭笑无常。多属:( )
A.癫病
B.痫病
C.狂病
D.郁症
E.以上都不是
[单选题]马克思在《资本论》中指出：“在一极是财富的积累，同时在另一极，即在把自己的产品作为资本来生产的阶级方面，是贫困、劳动折磨、受奴役、无知、粗野和道德堕落的积累。”这句话揭示了资本积累的一般规律是
A.资本有机构成的提高导致了资本主义社会相对过剩人口的形成
B.随着资本积累的增长，资本有机构成表现出不断提高的趋势
C.资产阶级财富的积累与工人阶级贫困的积累内在地、本质地、必然地联系在一起
D.资本积累和资本有机构成提高的过程，就是“机器排斥工人”的过程
[单项选择]患者男性，40岁，贫血、出血、感染伴走路乏力、头晕，诊断为慢性再生障碍性贫血，治疗应首选（）
A. 雄激素
B. 环孢素
C. 抗胸腺球蛋白
D. 抗淋巴细胞球蛋白
E. 造血干细胞移植
[填空题]通过电气化铁路平交道口车辆限界及货物装载高度（从地面算起）不得超过()米，超过时，应绕行立交道口或进行货物倒装。
[单选题]CRH2型动车组一级修时，受电弓编导线的芯线缺损小于 （ ）%
A.5
B.10
C.15
D.20
[判断题]正线车站大面积停电：单个及以上正线车站一、二级负荷停电。（ ）
A.正确
B.错误
[判断题]警用巡逻车应当配备符合相关标准的反光或者发光锥筒、警戒带、警告标志、指示标志、灭火器装备,装备的数量根据辖区道路交通状况和执勤执法实际需要确定。
A.正确
B.错误
[判断题]RTtJ是被控端的远动设备,它也是一个微机,用来完成遥控接收、输出执行、遥测、遥信量的数据采集及发送功能。 ( )
A.正确
B.错误
[单项选择]疟原虫的感染阶段是
A. 裂殖体
B. 子孢子
C. 动合子
D. 雌、雄配子体
E. 卵囊
[单选题]已终结的工作票（含工作任务单）、故障紧急抢修单、现场勘察记录至少应保存2年。
A.正确
B.错误
C.略
D.略
E.略
F.略
[判断题]变更工作负责人或增加工作任务，若工作票签发人和工作负责人无法当面办理，应通过电话联系，并在工作票登记簿和工作票上注明。
A.正确
B.错误
[多项选择]国家创新体系中主要组成成分包括（）
A. 政府
B. 企业
C. 大学
D. 科研机构
E. 中介机构
[判断题] 人民币发行基金是中国人民银行人民币发行库保存的未进入流通的人民币。()( )
A.正确
B.错误
[简答题]起吊易燃易爆桶罐时，应选择防静电专⽤起吊绳索，发⽣可燃易燃液体泄漏时应出覆盖，防⽌产⽣⽕花引发爆炸燃烧。
[单选题]Text3 In the past several years,as the nascent medium of virtual reality has come into its own,scientists and creators have begun to explore its potential effects on the human mind.Some are undoubtedly positive-as,for instance,when the technology is used to help war veterans overcome posttraumatic stress disorder,or as a means to expand a person's capacity for compassion.But the immediacy of virtual reality has a dark side,too.Several months ago,Michael Madary and Thomas K.Metzinger,researchers from the Johannes Gutenberg University of Mainz,in Germany,published a series of recommendations on the ethical design and implementation of virtual reality.Their appraisal of the medium's psychological force is both studious and foreboding."The power of virtual reality to induce particular kinds of emotions could be used deliberately to cause suffering,"they write."Conceivably,the suffering could be so extreme as to be considered torture."In filmmaking,the director must perform a kind of seduction of dread,leading viewers through an escalating series of psychological states.In the immersive world of virtual reality,no such dance is required.Part of the power of virtual reality-based horror comes from the fact that the director knows exactly where the viewer is looking."With that knowledge,we can play mind tricks or trigger events based on the gaze,"Jon Hibbins,the director of Psytec Games,a London-based virtual reality studio,said.For instance,he said,in Psytec's most recent fantasy-horror title,Crystal RiR,"a monster can appear in a vent only when the player looks at the vent."Hibbins claims that,as viewers'brains are tricked into believing that they are physically present in a reality,the memories they form are much stronger than those made when watching so-called flat-screen media.To soften these memories,Hibbins and his team have introduced a slider into their game that allows players to control the intensity of the horror."'Normal'will be an average scare experience,"he said."You'Il hear voices in the distance,ghosts in the corridors,sound from the voids,and snakes in the corridors.'Extreme'introduces jump scares,such as ghost figures that run through your body.It really does offer everyone an option."Stephan said,"Long-term,perhaps it's a case of building literacy in players and viewers so they understand when the scares are coming.For now,I think that means taking it slow."31.Virtual reality was originally designed as
A.a treatment ofveterans'injury after wars.
B.an exploration of the myth in human mind.
C.a way to raise sympathy for others.
D.a remedy for mental disorder caused by stress
[单选题] 密度计的检定周期最长不超过( )。
A.半年
B.一年
C.一年半
D.两年
[单选题]进行油罐清洗作业时，对进出油管线应采取 ( )的隔离措施。
A. 加盲板
B. 水封
C. 油封
D. 关闭阀门
[判断题]在结账前发现账簿记录有文字或数字错误，而记账凭证没有错误，可采用划线更正法更正。( )
[判断题]煤巷、半煤岩巷和有瓦斯涌出的岩巷的掘进工作面未装备甲烷风电闭锁装置或者甲烷断电仪和风电闭锁装置为煤矿重大安全生产隐患。( )
A.正确
B.错误
[单项选择]中支架敷设时管道保温层外表面至地面的净距一般为（ ）。
A. 0.5-1,0m
B. 1.0-2.0m
C. 2.0-2.5m
D. 2.5-4.5m
[判断题]提高贷款日均使用率有利于经济资本回报率的提高。( )
A.正确
B.错误
[单项选择]The Wall Street Journal quoted sources close to the company as saying a run of 4,000 devices will be manufactured next month. The tablet will have two rear-facing cameras and advanced imaging software— and will be shown off at the firm’s forthcoming developers’ conference. Google has said it will not comment on "rumor and speculation". But in March, Google showed off Project Tango, an effort to bring 3D technology to its handheld devices. A prototype smart phone had been given out to 200 developers to try out.
The technology makes use of infrared sensors to measure depth of surroundings. While the ability to create 3D images with small devices is by no means a new technological feat, Google’s strategy will be to harness the hardware to contribute to, among other things, its mapping effort. For instance, the devices could be used to create quickly a 3D map of indoor environments. According to the Wall Street Journal, the 3D tablet will be shown off at Google’s annual developers’ co
A. It will have two pre-facing cameras and advanced imaging software.
B. It will have one rear-facing camera and advanced imaging hardware.
C. It will have two rear-facing cameras and advanced imaging software.
D. It will have one pre-facing camera and advanced imaging hardware,
[单选题]平面力系是指（ ）。
A.所有力作用线位于同一平面内的力系
B.所有力的作用线汇交于同一点的力系
C.所有力的作用线相互平行的力系
D.都错误
[单选题]集群移动通信系统的信道利用率比较高，原因是它的信道控制技术采用（ ）方式。
A.集中分配
B.集中处理
C.分散处理
D.动态分配
[单选题]信号强度指示不够稳定(1至2格)，忽高忽低，主站通讯时断时续，故障原因是当地信号强度较弱，处理方法是更换外置天线或高增益天线，或调整外置天线(____)。
A.方向
B.位置
C.高度
D.方位
[判断题]重整催化剂烧焦是不能用蒸汽做载气而应用氮气 。 ( )
A.正确
B.错误
[单选题]间歇操作的特点是 ( )。
A.不断地向设备内投入物料
B. 不断地从设备内取出物料
C.生产条件不随时间变化
D.生产条件随时间变化
[判断题]在普通V带传动中,若发现皮带松弛不能使用时,应立刻更换不能使用的V带. ( )
A.正确
B.错误
[单选题] 年版10美元紫外光下可以看到安全线上的缩微文字是（ ）
A.USA 国旗
B.10
C.USA 10
D.USA TEN
[多项选择]病历摘要：男性，35岁，常感到胸部隐痛，有明显颈动脉搏动感，常有头晕，拟入院确诊。查体：心率85次/分，心脏可闻及病理性杂音，脉压增大。
此时应考虑诊断为（）（提示：超声心动图示，左室60mm，左房35mm，主动脉瓣回声增厚，关闭有裂隙，CDFI可见舒张期五彩血流束反流至左室流出道，达心尖部，二尖瓣回声增厚，开放受限，PHT测二尖瓣口面积为2.0cm2，关闭未见反流束。）
A. 先天性心脏病，房间隔缺损
B. 风湿性心脏病，二尖瓣狭窄
C. 风湿性心脏病，主动脉瓣关闭不全
D. 梅毒性心脏病，主动脉瓣关闭不全
E. 风湿性心脏病，二尖瓣关闭不全
F. 肺源性心脏病
[判断题]电缆沟（电缆隧道）基坑开挖雨期施工时，应尽量缩短开槽长度，逐段、逐层分期完成，并采用措施防止雨水流入基坑。（ ）［《国家电网公司输变电工程标准工艺（三） 工艺标准库（2016年版）》，工艺编号：0301030101］
A.正确
B.错误
