热门试题:
[判断题]分层抽样、整群抽样和系统抽样均属于概率抽样。( )
A.正确
B.错误
[判断题]已发行的第2版欧元背面右下角保留光变油墨面额数字。
A.正确
B.错误
[单选题]《铁路客车运用维修规程》规定,客车辅(A1)修系对()和制动装置进行的专项检修。
A.轮对
B.制动缸
C.制动机
D.电子防滑器
[单项选择]Children are (62) serious illnesses because of their parents smoking at home, rays the government’s chief medical officer, who has warned adults not to light (63) in front of their sons and daughters.
Sir Liam Donaldson, Britain’s most senior doctor, (64) that there would be a further (65) crackdown on smoking after the ban comes into force in England next Sunday.
He promised renewed public health advertising campaigns to try to educate parents who smoke. "We will strengthen and make (66) the message to parents about the risks to their children of smoking. This is something we will need to constantly remind them about."
" (67) the number of parents who make is falling, children’s exposure (68) parental smoke remains "a problem area", he said.
The number of Britons who smoke has fallen to 24 per cent and ministers hope going smoke-free will (69) time bring about another 4 or 5 per cent drop. " (70) if w
[填空题]自动闭塞区段、自动站间闭塞区段、半自动闭塞区段,超长列车头部越过发车进路信号机而未压上轨道绝缘节发车时,行车凭证为( )。
[判断题]因货物原因关门车超过6%时,有列检作业的列车,由列检计算闸瓦压力,并填发制动效能证明书交给司机。
A.正确
B.错误
[判断题]AIS告警代表上游信号故障。
A.正确
B.错误
[简答题]分解训练方法是指将完整的()或()过程合理地分成若干个环节或部分,然后按照环节和部分分别进行训练的方法。
[单项选择]实质性脏器损伤与空腔脏器破裂的主要区别在于()
A. 发生休克的类型
B. 有无腹膜刺激征
C. 腹痛性质
D. 腹腔穿刺液的性质
E. 外伤程度
[单选题]办理外币储蓄业务,存款本金和利息应当用( )支付。
A.人民币
B.外币
C.按照储户要求
D.以上都可以
[判断题]3号位乘务员对每一个坐于出口座位旅客的适合情况应进行目视评估、询问和确认,提示在出口座位就座的旅客阅读为其专备的出口座位旅客须知卡并进行自我对照。
A.正确
B.错误
[填空题]下部调剂是想尽方法维持合理的(),以保证气流在炉缸初始分布合理。
[单项选择]She worked hard at her task before she felt sure that the results would ______ her long effort.
A. justify
B. testify
C. rectify
D. verify
[单选题]一个子网网段地址为10.32.0.0 掩码为255.224.0.0 的网络,它所允许的最大主机地址是()
A.10.32.254.254
B.10.32.255.254
C.10.63.255.254
D.10.63.255.255
[单项选择]有关改装系统使其可应用R134a制冷剂前之注意事项,下列陈述哪一项最为正确()
A. 无须考虑系统之兼容性,可任意更换制冷剂为R134a
B. 无须考虑系统之兼容性,可逐步混入R134a制冷剂
C. 确认现有压缩机可兼容制冷剂R134a后,实时更换
D. 确认现有压缩机可兼容制冷剂R134a后,必须一并更换系统中所有冷冻油及制冷剂
[单项选择] A century ago in the United States, when an individual brought suit against a company, public opinion tended to protect that company. But perhaps this phenomenon was most striking in the case of the railroads. Nearly half of all negligence cases decided through 1896 involved railroads. And the railroads usually won.
Most of the cases were decided in state courts, when the railroads had the climate of the times on their sides. Government supported the railroad industry; the progress railroads represented was not to be slowed down by requiring them often to pay damages to those unlucky enough to be hurt working for them.
Court decisions always went against railroad workers. A Mr. Farwell, an engineer, lost his right hand when a switchman’’s (铁路的转辙员) negligence ran his engine, off the track. The court reasoned that since Farwell had taken the job of an engineer voluntarily at good pay, he had accepted the risk. Therefore the accident, though avoidable had the switchman acted
A. the railroad company got the support of media such as Times
B. during that period, the weather was favorable for the railroad building
C. the railroad industry was supported by the government
D. the railroad companies should hold responsibility for their negligence
[单项选择]堵转时间长会烧损电动机,所以堵转时间应控制在()秒内。
A. 1-2
B. 3
C. 6-7
[单选题]P307T1S008 重合闸可由( )起动。
A.电流,电压,或开关跳闸
B.保护动作或开关位置不对应
C.保护跳闸
D.电流,电压,或开关位置不对应
[判断题]对于客户指定在本行原有的账户作为资金监管账户的,应对账户内对应监管的资金进行控制。
A.正确
B.错误
[简答题]某工业用电客户,三相负荷平衡分布,装设三相二元件有功表计量。某用电检查发现,计量表两元件电压电流配线分别为Uuv,Iu,Uwv,-Iw。已知,其计量接线相量图如图φ=30,表计示数差W为5000kWh。该应追补电量______kWh。
[单选题]电焊机的外壳应可靠接地或接零。接地时其接地电阻不得大于8。()
A.正确
B.错误
C.略
D.略
E.略
F.略
[判断题]剩余电流式电气火灾监控探测器以设置在低压配电系统首端为基本原则,宜设置在第一级配电柜(箱)的出线端。( )
A.正确
B.错误
[单项选择]按保险标的分,保险合同分为()
A. 责任保险、信用保险
B. 寿险、健康险
C. 财产损失险、人身意外伤害保险
D. 财产保险、人身保险
[判断题]消防通信调度系统的响应时间是指从火警电话呼入开始,到消防中队收妥出动指令为止的时间。其间包括调度员与接警调度设备人机交互的操作过程。( )
A.正确
B.错误
[单选题]以上事件直接原因为()。
A.高空作业未使用安全带,导致不慎坠落;安全帽下颌带没有系牢,导致头部直接触地受撞击。
B.安全工器具过多,管理过于复杂
C.工期管理不够灵活,人员难以安排
D.环境条件不适合作业
[判断题]灾情侦察小组在进入有爆炸、中毒危险区域侦察时,在安全区域校验侦检设备,并预留同等级防护的紧急救助小组,随时做好紧急救援准备。
A.正确
B.错误
[多项选择]能源预警的程序一般包括()。
A. 明确警情
B. 查找警源
C. 分析警兆
D. 预报警度
[单项选择]何种病原体引起的盆腔炎是以血行传播为主()
A. 淋病奈瑟菌
B. 葡萄球菌
C. 沙眼衣原体
D. 大肠埃希菌
E. 结核杆菌
[单项选择]
Cell Phone Lets Your Secret out
Your cell phone holds secrets about you. Besides the names and (51) that you’ve programmed into it, traces of your DNA linger on the device, according to a new study.
DNA is genetic material that (52) in every cell. Like your fingerprint, your DNA is unique to you— (53) you have an identical twin. Scientists today routinely analyze DNA in blood, saliva, or hair left (54) at the scene of a crime. The results often help detectives identify (55) and their victims. Your cell phone can reveal more about you (56) you might think.
Meghan J. McFadden, a scientist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the (57) . This made her wonder whether traces of DNA lingered on cell phones—even when no blood was involved. (58) A. when
B. until
C. before
D. than
[单选题]苏某,女,30岁。患甲亢半年,应限制的饮食是
A. 高热量
B. 高蛋白
C.高维生素
D. 高碘饮食
E.富含钾和钙
[判断题]《安规》(热力和机械部分)规定,经过有关主管领导批准,就可以在运行中的汽轮机上进行检修工作。
A.正确
B.错误
[多选题]适合自体移植的NDMM患者的治疗路径包括哪几个阶段:( )
A.巩固治疗
B.ASCT
C.诱导治疗
D.固定周期治疗
E.维持治疗
[判断题]17世纪后,法国取代西班牙成为欧洲大陆最强大的国家。
[判断题]入窖糟醅应尽量做到高温入池,缓慢发酵。 ( )
A.正确
B.错误
[判断题]作业监护人应清点出入受限空间的作业人数,在出入口处保持与作业人员的联系,严禁离岗。当发现异常情况时,应及时制止作业,并立即采取救护措施。
A.正确
B.错误