热门试题:
[判断题]预算单位只有贷款才可以开立一般户,事业单位资金来源自收自支可以开立一般账户,其余的要开立专用存款账户。
[填空题]按图定出库时间提前 5 分钟进行探头作业。确认库门开启到位,防护人员监护;平交道口无人员、异物侵限, 限速 5km/h 运行越过库门 ( )米处一度停车,等待信号开放。
[单选题] ( )客舱乘务员应当在结束初始训练的所有地面训练和应 急生存训练后的___天内完成飞机飞行训练和资格检 查。
A.60
B.90
C.120
D.150
[多项选择]有尿路感染症状的留置导尿管的尿路感染,治疗措施是
A. 及时更换导尿管
B. 暂不治疗
C. 必要时改为间歇导尿或耻骨上膀胱造瘘引流
D. 加强支持疗法
E. 立即予以强有力的抗菌药物治疗
[单选题]“三段式”课程的基本结构为( )、专业基础课、专业课三段。
A.操作课
B.文化课
C.公共课
D.必修课
[多选题]《铁路劳动安全》中规定,电气化铁路是由()两大部分组成。
A.A、外部供电系统
B.B、电力机车
C.C、牵引供电系统
D.D、内部供电系统
[单项选择]痰热咳嗽,痰稠色黄,咯之不爽,胸膈痞闷,甚则气急呕恶,舌质红,苔黄腻,脉滑数宜选用()
A. 小陷胸汤
B. 清气化痰丸
C. 温胆汤
D. 贝母瓜蒌散
E. 苓甘五味姜辛汤
[单选题]生防与化防的( )应用,是保护利用自然天敌昆虫的最重要措施。
A.同时
B.单独
C.混合
D.协调
[单选题]中国将坚定不移奉行独立自主的和平外交政策,同国际社会一道致力于推动建立的新型外交关系的核心是( )。
A. 相互尊重
B. 公平正义
C. 合作共赢
D. 普遍安全
[单项选择]用高级程序设计语言编写的程序称为源程序,它______。
A. 只能在专门的机器上运行
B. 无须编译或解释,可直接在机器上运行
C. 可读性不好
D. 具有良好的可读性和可移植性
[判断题]锦鲤、娃娃鱼、龙鱼都属于鱼类。
A.正确
B.错误
[单项选择]压缩机排气压力不应大于()Mpa。
A. 20
B. 25
C. 18
D. 21
[填空题]值班备勤人员自值班备勤()至值班备勤结束不得饮酒。
[单项选择]关于字号,描述错误的是()
A. 字号是指字符的大小
B. 字号的表示方法有中文数字表示和阿拉伯数字表示两种方式
C. 用中文字号表示时,“初号”最小,“八号”最大
D. 阿拉伯数字表示字号的磅值,128磅最大,5磅最小
E. 以上均是
[填空题]5股以下镀锌铁线拉线缠绕长度为下缠()mm。
[判断题]运营内控副行长/经理代职人员是指由委派机构统筹安排,负责运营内控副行长/经理代职工作的人员,分为专职代职人员和临时代职人员。
A.正确
B.错误
[多项选择]能够影响运输合理化的因素有:()。
A. 运输距离
B. 运输环节
C. 运输工具
D. 运输时间
[判断题]车站窗口在使用进站补票功能对减价不符学生票补收票价时,收回原票换发新票,新票票面打印“补”字,原席位不予保留。
A.正确
B.错误
[填空题]《铁路旅客运输服务质量规范》(铁总运〔2016〕247号)规定,按规定实行实名制验证,核验车票、<--有效身份证件原件-->、旅客的一致性。
[单选题]记录应当保持清洁,不得撕毁和任意涂改。记录填写的任何更改都应当签注_______和_______。( )
A.姓名、日期
B.名称、数量
C.批号、规格
[判断题]间接接触触电是由于电气设备(包括各种用电设备)内部的绝缘故障,而造成其外露可导电部分(金属外壳)可能带有危险电压(在设备正常情况下,其外露可导电部分是不会带有电压的),当人员误接触到设备的外露可导电部分时,便可能发生触电。()
A.正确
B.错误
[单选题]二号线列车自动折返模式的英文缩写是( )。
A.AR
B.AM
C.ATB
D.DTRO
[多选题]在直角坐标系中,下列叙述直线象限角正确的是()。
A.从纵轴北端起始按顺时针方向与某一直线之间的夹角
B.从纵轴南端起始按顺时针方向与某一直线之间的夹角
C.从纵轴北端起始按逆时针方向与某一直线之间的夹角
D.从纵轴南端起始按逆时针方向与某一直线之间的夹角
E.从横轴一端起始按逆时针方向与某一直线之间的夹角
[判断题]皮带机、除尘器电机的接地线可有可无。( )
A.正确
B.错误
[多选题]中国“复兴号”动车组具有“寿命”更长、“身材”更好、 等优点。
A.“容量”更大
B.空间更小
C.舒适度更高
D.“警惕性”更高
[单选题]关于高供低计客户加收有功变损电量的规定,不正确的是(____)。
A.铁损是固定损耗,铜损是变动损失
B.铁损和铜损都含有功和无功电量
C.铁损是变动损失,铜损是固定损失
D.铜损的无功电量等于铜损的有功电量乘以系数K
[单选题]商店营业厅防火卷帘门两侧各()米范围内不得堆放物品,应用黄色标识线划定范围。
A. 0.2
B. 0.3
C. 0.4
D. 0.5
[简答题]已知某水泵的流量为50t/h,出口压力p2=3.14MPa(相当于扬程320.28m),入口压力p1=0.196MPa(相当于扬程20m),水泵的效率η为0.75,试求水泵的轴功率。
[简答题]导游人员和领队搞好协作关系的因素有哪些?
[单选题] 在犯罪过程中,自动放弃犯罪或者自动有效地防止犯罪结果发生的,是( )。
A. 犯罪中止
B. 犯罪终止
C. 犯罪未遂
D. 不构成犯罪
[判断题]【2017电力安全工作规程习题(线路部分)判断题】346.对于动火作业,可以采用不动火的方法代替而同样能够达到效果时,尽量采用替代的方法处理。( )
A.正确
B.错误
[判断题]>接触网倒闸作业应一人监护,一人操作。( )
A.正确
B.错误
[不定项选择题]共用题干
Electromagnetic Energy
1 White light seems to be a combination of all colors.The energy that comes from a source of light is not limited to the kind of energy you can see.Heat is given off by a flame or an electric light.On a cloudy day it is possible to get a sunburn even though you feel cool.Visible light and the kinds of energy that produce warmth and sunburn are examples of electromagnetic energy.
2 The sun is 93 million miles from the earth.Yet we can use energy from the sun because electromagnetic energy travels through space.
3 Many other kinds of energy are also types of electromagnetic energy.Radio,television,and radar signals travel from transmitters to receivers as low-energy electromagnetic waves.Infrared(红外线的)radiation is an electromagnetic wave.When it is absorbed by matter,heat is produced.Waves of infrared and visible light have more energy than waves of radio,television,or radar.Ultraviolet rays(紫外线)and X-rays are electromagnetic waves with even greater amounts of energy.Infrared radiation is used in cooking food and heating buildings. Sunlight and electric lights are part of our requirements for normal living.Ultraviolet radiation is useful in killing certain disease organisms.X-rays and gamma rays have so much energy that they travel through solid objects. They can be used to detect and treat cancer.X-rays are used in industry to find hidden cracks in metal,and in medicine to reveal broken bones.
4 Usually we use electricity to generate electromagnetic energy.The source of most of our energy is the sun.Heat from the sun causes water to evaporate.When the water falls to the earth as rain,some of it is trapped behind dams and then used to operate electric generators.Other generators are powered by coal,but the energy stored in coal came from the sun,too.
5 Until recently,the source of the tremendous amount of energy given off by the sun was a puzzle.If the sun depended on chemical reactions,it would have used up all its energy long ago.Experiments with electromagnetic radiation led to the theory that mass can be converted into energy.About forty years after the theory was proposed , nuclear energy was harnessed(利用)by man.Chemical energy comes from electron (电子)rearrangement.Nuclear energy comes from a change in the nucleus of an atom.Compared with chemical reactions,nuclear reactions release millions of times more energy per pound of fuel.We now believe that the sun's energy comes from the nuclear reactions in which hydrogen is changed into helium(氦).
6 Nuclear energy is beginning to compete with coal as an economical source of'power to generate electricity.It is also being used to operate engines in large ships.Scientists continue to seek new and better methods of obtaining and using energy.
One can get a sunburn even______.
A.when it is absorbed by matter
B.when it is cloudy
C.because they can pass through solid objects
D.when the sunrays are fierce.
E.when a change in the nucleus of an atom takes place
F.when electron rearrangement takes place
[多选题]单个人员和建制单位出列、入列,通常用( ),5
步以内用( ),1 步用( )。
A. 跑步
B. 齐步
C. 正步
D. 礼步