热门试题:
[单选题] C C T V监控系统,如果传输信道存在非线性畸变,那么不同亮度电平上的色度信号副载 波幅度将受到不同程度的增大或衰减,从而造成色饱和畸变,这叫做 ( ) .
A.微分相位失真
B.微分增益失真
C.动态增益变动
D.惰性
[多选题]定尺剪剪切8mm钢板时,剪不断,可采用的临时处理方法( )。
A.剪切舌头、舌尾量尽量放长
B.重新测量剪刃间隙,进行标定,剪刃间隙尽量设小
C.剪刃间隙调大
D.剪切舌头、舌尾量尽量放短
E.抬起压抓进行剪切
[判断题] 在油田开发程序中,要在已控制含油面积内打探井,了解油层的特征。
A.正确
B.错误
[判断题]无人机电机仅仅是将电能转换成机械能,螺旋桨才是真正产生升力的部件,
A.正确
B.错误
[单选题]《城市轨道交通运营险性事件信息报告与分析管理办法》规定,运营险性事件中符合国家有关事故等级标准的,其信息报告和调查处理工作按照( )执行。
A.国家有关规定
B.地方有关规定
C.行业有关规定
D.行业标准
[多项选择]施工中对高处作业的安全技术设施发现有缺陷和隐患时,应当如何处置?()
A. 发出整改通知单
B. 必须及时解决
C. 悬挂安全警告标志
D. 危及人时,必须停止作业
E. 追究原因
[单项选择]与自身免疫相关的胃炎是( )
A. A型慢性萎缩性胃炎
B. 慢性浅表性胃炎
C. 肥厚性胃炎
D. B型慢性萎缩性胃炎
[单选题]以下都是音频格式的为()。
A. WMA、MP3、APE
B. AIV, MP3、0GG
C. MIDI. MP3、MOV
D. MIDI. ASF、WMA
[填空题]Television Network
As one of the three major commercial networks, CBS was organized
in 1928 in which its founder, William Paley, acquired ownership of a
41.the group of radio stations. As the Columbia Broadcasting System
42.expanded its operations, and soon becoming the largest radio network
43.in the United States, it is precociously recognized the potential for the
44.rapidly evolving television broadcasting technology. On July 13th,
45.1931, it began to experimental television broadcasting in New York,
46.and ten years later it began regular black and white week broadcasts
47.over its WCBW TV station in the same city, in which became WCBS TV
48.in November 1946. With Television City in Hollywood, CBS has launched
49.the industry’s first full scale production studio there. Today CBS owns
50.television stations, radio stations, home video production and distribution.
51.The CBS Broadcasting Grou
[单选题] 部分银行(如工商银行),冻结的金额不显示,平台反馈会显示余额为“()”
A. ∞
B. 0
C. 不显示
[判断题]气瓶储存时,可不放置于专用仓库储存
A.正确
B.错误
[单选题]预制叠合板堆放时,其高度不宜大于( )层。
A.5
B.6
C.7
D.8
[单项选择]汽车半轴采用40Cr钢制回火处理时,要求保留部分表面淬火所造成的压应力,以提高轴的疲劳强度,所以半轴的回火温度为()。
A. 350~400℃
B. 300~350℃
C. 180~250℃
[判断题]医疗卫生机构发现疑似职业病病人时,应当告知劳动者本人并及时通知用人单位。用人单位应当及时安排疑似职业病病人进行诊断。( )
A.正确
B.错误
[单选题]真空断路器的动、静触头安装在( )内。
A.密封空气容器
B.密封金属容器
C.真空灭弧室
[单选题]战斗员应当履行的战备职责是?
A.掌握辖区交通道路、消防水源、消防安全重点单位等情况和灾害事故处置程序及行动要求,熟悉执勤战斗预案的有关内容;掌握本班人员情况,确定战斗分工;熟悉执勤战斗装备配备和使用操作技术,认真组织维护、保养工作,使其随时处于良好战备状态;妥善处理本班战备工作中发生的问题,并及时报告中队值班首长。
副班长协助班长工作。在班长离开岗位时,代行班长职责。
B.了解辖区交通道路、消防水源、消防安全重点单位等基本情况;保持个人防护装备和分管装备完整好用,熟悉装备性能,熟练操作使用;掌握辖区主要灾害事故处置的行动要求,熟悉中队执勤战斗预案中本岗位的主要任务;熟悉灭火救援行动安全要则,掌握紧急避险方法。
C.掌握火警和应急救援分级规定,坚守岗位,按照出动命令或者报警及时发出出动信号,并做好记录;熟练使用通信系统和装备,做好维护保养工作,发现故障及时处理;掌握辖区交通道路和消防安全重点单位等有关情况,熟记通信用语和有关单位、部门的联系方法;
D.熟悉辖区市政和消防安全重点单位内部消火栓的数量、位置、给水管网形状、直径、供水能力;熟悉辖区内天然水源以及其他可用水源的情况和取水方式;掌握供水装备技术性能和供水方法;保持分管装备完整好用,熟练使用相关装备;负责消防水源资料登记、造册、归档工作,定期对消防水源进行检查。
[判断题]HXN3型内燃机车空气干燥器具有一个DC64V的电气控制接口,用来使干燥器与排水阀之间循环工作。
A.正确
B.错误
[判断题]任何拖延和操作错误都会导致伤员伤情加重或死亡。
A.正确
B.错误
[单选题]所有进入流程的正式公文,都需要经段()签审,再由段()签发。
A.科室负责人;主管领导
B.主管领导;主要领导
C.各科室;主管领导
D.行政办公室;段领导
[填空题] In the popular mind, the Internet is the realization of the global village, where the flow of information and ideas is unimpeded by distance or national barriers. Much has been written _____(1) the technology and the benefits that this system of unregulated information exchange will bring. But____(2) has been very little discussion about the languages — human, not computer languages____(3) are being used on the Internet.
Central____(4) the ideology of the emerging Internet community is the freedom of the individual users to express____(5) as they like. Nevertheless,____(6) recently, it has been very difficult to communicate through the Internet in any language_____(7) could not be expressed in the standard English alphabet as defined____(8) the American Standard Code for Information Interchange (ASCII).
English is already the premier____(9) of science and technology worldwide. The peculiar restriction of____(10) able to communicate with only the limited ASCII character se
[多选题]、哪些物质属于分解燃烧()。
A. 焦炭
B. 蚕丝
C. 硫
D. 合成橡胶
[判断题]组织事故调查组的机关或者铁路管理机构应当自事故调查组工作结束之日起,根据事故大小决定事故认定书相应报告时间。
[单选题]下列关于公安机关辞退民警的说法正确的是()。
A.民警甲工作不努力,年度考核中,被确定为不称职,公安机关可以将其辞退
B.民警乙因所在派出所撤销,被调往另一公安派出所,乙以平调未提拔为由,拒绝前往新安排的公安派出 所上班,公安机关可以将其辞退
C.民警丙在年休假期满后,连续 10 天未上班,也未给领导任何说法,公安机关可以将其辞退D.民警丁因不加强学习,不胜任本职办理出入境管理工作,公安机关可以将其辞退
[单项选择]Jan Hendrik Schon’s success seemed too good to be true, and it was. In only four years as a physicist at Bell Laboratories, Schon, 32, had co-authored 90 scientific papers — one every 16 days, which astonished his colleagues, and made them suspicious. When one co-worker noticed that the same table of data appeared in two separate papers — which also happened to appear in the two most prestigious scientific journals in the world, Science and Nature — the jig was up. In October 2002, a Bell Labs investigation found that Schon had falsified and fabricated data. His career as a scientist was finished.
If it sounds a lot like the fall of Hwang Woo Suk — the South Korean researcher who fabricated his evidence about cloning human cells — it is. Scientific scandals, which are as old as science itself, tend to follow similar patterns of hubris and comeuppance. Afterwards, colleagues wring their hands and wonder how such malfeasance can be avoided in the future. But it never is entirely.
A. Key scientific journals are authoritative in evaluating scientific papers.
B. Peer-review is the most effective method in evaluating and selecting scientific papers.
C. Scientists are less likely to achieve career success without publications in top papers.
D. Fabricating evidence in scientific researches can be discovered by evaluation strict enoug
[单项选择]男性,46岁,胃痛十余年,近半年症状加重持续上腹痛,尚能进食,上腹部偏右可扪及5cm×6cm肿块,移动浊音阳性,肛诊检查,直肠前壁触及质坚硬节,临床诊断胃癌,下列哪种治疗是合理的()
A. 胃大部切除术
B. 胃癌根治术
C. 姑息性胃癌切除术
D. 胃、空肠吻合术
E. 不宜手术
[单项选择]Operation Buccaneer is ______
A. directed by the officials of the Customs Service
B. conducted by the Federal Bureau of Investigation
C. carried out under the cooperation with many people
D. supported by the Central Intelligence of America
[填空题]1600仪器做稀释项目稀释过后的样本添加量为( )ul。
[单选题]西安地铁乘客信息显示系统中,中心无线控制器通过( )与车站以太网交换机相连接。
A.核心交换机
B.延伸交换机
C.单模光纤
D.多模光纤
E.以上选项都正确
[单项选择]19世纪初,英国海军名将纳尔逊指挥皇家海军以少胜多,打了一次漂亮的歼灭战,而他本人却在这次海战中牺牲,这次著名海战是()。
A. 阿布基尔海战
B. 哥本哈根海战
C. 特拉法尔加海战
D. 锡诺普海战
[多选题]地漏规格按排水口公称直径表示,有( )
A.50mm
B.75mm
C.100mm
D.125mm
E.150mm
[判断题]单机测试时,设备急停按钮或者配电柜前必须配备应急操作人员,一旦发现设备故障或其他不安全现象,应立即停止设备或电源。
A.正确
B.错误
[判断题]水准测量中标尺在测线方向上前后倾斜对高差没有影响。( )
A.正确
B.错误
[单选题]电话铃声响起,营业员应在( )声以内接起电话。
A.2
B.3
C.4
D.5
[判断题]专门开采的天然气、与原油同时开采的天然气、煤矿生产的天然气均应按天然气税目计算缴纳资源税。( )
A.正确
B.错误
[单选题]下列关于干法除尘的说法错误的是()。
A.含尘烟气沿中心线方向进入除尘器外壳和排出管之间的环形空间
B.旋风除尘器除尘效率可达85%
C.最常用的干法除尘设备是旋风除尘器
D.旋风除尘器没有运动部件、造价低、维护管理方便
[单选题] 新时代党的建设总要求之一是全面推进党的( ) 。
A.思想建设、政治建设、组织建设、作风建设、反腐倡廉建设
B.思想建设、政治建设、组织建设、作风建设、纪律建设
C.政治建设、思想建设、组织建设、作风建设、纪律建设
D.政治建设、思想建设、组织建设、作风建设、反腐倡廉建设
[单选题]攻下药不适用于
A.大便秘结
B.火热炽盛的血证
C.高热神昏
D.虚热证
E.肠道寄生虫病
[多选题]手车开关每次推入柜内后,应保证(____)。
A.手车到位
B.隔离插头接触良好
C.机械闭锁可靠
D.指示装置指示正确