热门试题:
[判断题]无人值守变电站保护功能压板应采用软压板方式,具备远方操作功能。
A.正确
B.错误
[多选题]TJWX-2000型信号微机监测系统采集板共分为()
A.开关量输入板
B.开关量输出板
C.模拟量输入板
D.互感器板
[单选题]生产经营单位的主要负责人未履行本法规定的安全生产管理职责,发生较大事故的,处上一年年收入百分之()的罚款。
A.二十
B.四十
C.六十
D.八十
E.lue
F.lue
[单选题]哪项是辅助电气系统构成设备之一?
A.通风机
B.冷凝风机
C.压缩机
D.照明系统
[单项选择]Thirty-two people watched Kitty Genovese being killed right beneath their windows. She was their neighbor. Yet none of the 32 helped her. Not one even called the police. Was this in gunman cruelty Was it lack of feeling about one’s fellow man
"Not so," say scientists John Barley and Bib Fatane. These men went beyond the headlines to probe the reasons why people didn’t act. They found that a person has to go through two steps before he can help. First he has to notice that is an emergency.
Suppose you see a middle-aged man fall to the side-walk, is he having a heart attack Is he in a coma from diabetes Or is he about to sleep off a drunk
Is the smoke coming into the room from a leak in the air conditioning Is it "steam pipes", Or is it really smoke from a fire It’s not always easy to tell if you are faced with a real emergency.
Second, and more important, the person faced with an emergency must feel personally responsible. He must feel that he must help, or the pers
A. we shouldn’t blame a person if he fails to act in emergencies
B. a person must feel guilty if be fails to help
C. people should be responsible for themselves in emergencies
D. when you are in trouble, people will help you anyway.
[单选题]下列关于低倍泡沫枪使用方法的表述中,错误的是( )。
A.低倍泡沫枪可在消防系统供给3%或6%的各类型泡沫混合液的情况下使用,此时应将球阀处于关闭状态。
B.低倍泡沫枪也可在消防系统供给压力水情况下自吸泡沫使用,此时球阀应处于完全开启状态。
C.低倍数泡沫枪有便于操作和起保护枪作用的圆形手轮,使用时操作者应抓紧枪的手轮。
D.低倍数泡沫枪喷射时尽量要逆着风向。
[判断题]火场上扑救原则是先人后物、先重点后一般、先控制后灭火。
A.正确
B.错误
[单项选择]男性,67岁,患阻塞性肺气肿12年余,近日着凉后,咳嗽、咳黄痰、气喘加剧,伴发热,上腹胀痛,食欲减退,肝大伴压痛,下肢轻度水肿,心电图偶见房性期前收缩治疗稳定期COPD的首选吸入药物为()
A. 沙丁胺醇
B. 异丙托溴铵
C. 特布他林
D. 布地奈德
E. 二丙酸倍氯米松
[判断题]有限空间作业期间,《申请单》应由作业负责人收执。
A.正确
B.错误
[单选题]当无缝线路因轨温发生变化而两端伸缩时首先受到( )的约束。
A.道床纵向阻力
B.道床横向阻力
C.接头阻力
D.扣件阻力
[多选题]以下导线现场检查要点正确的有( )。
A.导线表面不得有断股、缺股、松股、跳股和压扁现象
B.导线外径允许误差为:±1%d且不得大于±0.1mm
C.导线表面不应有目力可见的缺陷
D.应检查两层导线之间的垫衬情况
[单选题]在下列水害灾害现场应急处置中,行车值班员处置作业正确的有()。
A.报告值班站长、行调、维调;收集各岗位反馈的现场信息,进行汇总,及时告知值班站长及行调
B.接启用淹积水应急预案后,播放广播安抚乘客,并做好乘客引导解释工作
C.配合相关中心关闭相应区域电气设备(如:AFC设备、照明、PIS、广告灯箱等电源)
D.以上都正确
[单项选择]维生素C含量测定法
A. 碘量法
B. 三点校正法
C. GC
D. 非水滴定法
E. 紫外分光光度吸收系数法()
[单选题] 成年家畜血液占体重的( )
A.6%~8%
B.10%~12%
C.12%~14%
D.14%~16%
E.16%~18%
[多项选择]下列凝血因子合成需要维生素K参与的有()
A. 因子Ⅱ
B. 因子V
C. 因子Ⅶ
D. 因子Ⅸ
E. 因子X
[判断题]现场校验电流互感器、电压互感器应停电进行,试验时应有防止反送电、防止人员触电措施。
[单项选择]氢气的分子量为()。
A. 1
B. 2
C. 4
D. 6
[判断题]电压也称电位差,电压的方向是由低电位指向高电位。(____)
A.正确
B.错误
[单选题]观察眼图应使用的仪表是( )。
A.频率计
B.万用表
C.示波器
D.扫频仪
[单项选择]
Materials and Tools for Language Learning
① The range of materials and tools available to help you with your language studies is huge, from dictionaries to language courses. All of them can help you in different ways, and the appropriate use of these materials and courses will make your language learning much easier and more effective.
② Possibly the most useful tools there are for learning a language are dictionaries. Dictionaries come in a number of formats including bilingual, monolingual, illustrated, electronic and online. Bilingual dictionaries are perhaps the most useful ones for beginners and intermediate learners, while monolingual dictionaries, which are designed for native speakers, are also useful for advanced learners. Pocket dictionaries are good for quick reference and easy to carry around. Larger dictionaries are better if you want more definitions, examples of usage, and information about pronunciation, and grammar. Electronic dictionaries are available as handheld units, or as software. Handheld ones are portable, easy and quick to search, and often provide other functions, such as, text-to-speech, voice recognition and speech synthesis organizers, address books. They tend to be rather expensive though. Software dictionaries offer many of the same functions, and can be used on computers, and mobile phones.
③ The traditional courses tend to consist of textbooks containing dialogues, exercises, notes on grammar, and maybe cultural information. Accompanying cassettes, CDs and/or mp3s are often available. Most such courses are intended for complete beginners or people with only minimal knowledge of the language. Intermediate and advanced-level courses are available for some of the popular languages, such as French, German, Italian and Spanish.
④ Audio courses usually consist solely of cassettes or CDs, though some may also include a limited amount of printed material. All dialogues, exercises, instructions and explanations are recorded and the focus of these courses is teaching you to understand and speak the languages. They are very good at teaching you authentic pronunciation and a manageable amount of vocabulary.
⑤ Various computer-aided courses are available on CD-ROMs and DVDs. Each course is different but they generally include dialogues, audio, exercises and tests. Some also include phrasebooks, dictionaries, videos, games and provide online and/or telephone support.
The appropriate use of these materials and courses will enable you to learn language()
A. more definitions, examples of usage, and information about pronunciation, and grammar
B. authentic pronunciation and a manageable amount of vocabulary
C. phrasebooks, dictionaries, videos, games and provide online and/or telephone support
D. from dictionaries to language courses
E. in a much easier and more effective way
F. beginners or people with only a little knowledge of the language
[判断题]【判断题】在试验和推广新技术、新工艺、新设备、新材料的同时,应制定相应的安全措施,经本单位分管生产的领导(总工程师)批准后执行。
A.正确
B.错误
[单选题]多孔砖的孔洞应( )于受压面砌筑。
A.平行
B.垂直
C.倾斜
D.平行与垂直分层交错
[不定项选择题]指标:调整
A.未来:展望
B.理想:实现
C.会议:推迟
D.实力:增强
[判断题]( )带负荷更换跌落式熔断器时,若发现熔断器下引线连接处可能脱开,应经工作负责人批准后使用绝缘操作杆加固连接。
A.正确
B.错误
[单项选择]线粒体外NADH经苹果酸穿梭进入线粒体后氧化磷酸化,能得到的最大P/O比值约为()。
A. 0
B. 1
C. 2
D. 3
E. 以上都不是
[单选题]大量出汗时尿量减少是由于
A.血浆晶体渗透压升高,ADH释放增多
B.血浆晶体渗透压降低,ADH释放减少
C.血浆胶体渗透压升高,ADH释放增多
D.血浆胶体渗透压升高,肾小球滤过率减少
[单选题]采用间接验电判断时,至少应有( )的指示发生对应变化,且所有这些确定的指示均已同时发生对应变化,才能确认该设备已无电。
A.两个非同样原理或非同源
B.三个非同样原理或非同源
C.两个非同样原理和非同源
D.三个非同样原理和非同源
[单选题]“理想气体和单一热源接触作等温膨胀吸收的热量全部用来对外做功”。对此说法 有如下几种评论,哪种是正确的?( )
A.不违反热力学第一定律,但违反热力学第二定律
B.不违反热力学第二定律,但违反热力学第一定律
C.不违反热力学第一定律,也不违反热力学第二定律
D.既违反热力学第一定律,也违反热力学第二定律
[单项选择]估计休克及复苏动态演变的主要实验指标是()。
A. 动脉血pH值
B. 动脉血乳酸盐
C. 动脉血乳酸脱氢酶
D. 动脉血血气分析
E. 动脉血丙酮酸盐
[单选题]下列物质燃烧,属于A类火灾的是( )。
A.石蜡
B.沥青
C.棉布
[单项选择]下列关于治疗休克的叙述中,错误的是()。
A. 失血性休克的治疗是扩容
B. 感染性休克时可应用大剂量氢化可的松
C. 失血性休克时,止血是不可忽视的主要手段
D. 感染性休克时,应首先使用升压药
E. 感染性休克应恢复有效循环血量
[单选题]新中国首次以五大国之一的身份参加讨论和平解决朝鲜问题和恢复印度支那和平问题的重大国际会议是( )。
A.万隆会议
B.日内瓦会议
C.开罗会议
D.华盛顿会议
[判断题]举手礼时,戴卷檐帽或者不戴帽时中指微接太阳穴,约与眉同高。
A.正确
B.错误
[简答题]【问答题】在防火重点部位或场所以及禁止明火区动火作业,应填用动火工作票。其方式有哪几种?
[多项选择]水准仪横丝与水准尺刻划不平行,采取的措施有哪些()。
A. 升降架腿
B. 调焦
C. 竖直水准尺
D. 校正水准仪
[多项选择]信息通信技术是实现()的重要基础。
A. 坚强电网
B. 电网智能化
C. 互动化
D. 大电网运行控制
[判断题]车辆维修时,车辆停放于坚实平整地面,车轮前后用木头堰实防止溜滑。
A.正确
B.错误
[单项选择]肢体筋脉弛缓,软弱无力,日久因不能随意运动而肌肉萎缩的病证是()
A. 痉证
B. 痹证
C. 痿证
D. 厥证
E. 痫证