热门试题:
[单项选择]
冯·诺依曼体系结构的计算机有两个主要组成部件：内存和处理器。其中，内存用于存储指令和数据。在大多数高级语言程序中， (7) 是内存单元的抽象。微处理器中的ALU可执行算术运算和 (8) 操作。
（8）处应填（）。
A. 浮点
B. 定点
C. 逻辑
D. 控制
[填空题]《中国铁路上海局集团有限公司普速铁路客运非正常情况应急处置办法》（上铁客〔2018〕354号）规定，电气化区段发现人员攀爬车顶时，现场工作人员应加强站台秩序维护，避免站台旅客集中围观。同时，工作人员应告知车顶人员<--NRC-->。
[单项选择]氯瓶燃烧法测定含氯有机化合物，常用的稀释液是
A. 水
B. 稀硫酸
C. 稀氢氧化钠液
D. 氢氧化钠+硫酸肼溶液
E. 浓氢氧化钠液
[填空题]故余若将不及兮，______。(屈原《离骚》)
[判断题]（类别：号段管理难度：中等）根据文旅融合的大思路，文化是旅游的载体。（）
A.正确
B.错误
[单项选择]首级平面控制网应优先以( )形式布设。
A. GPS网
B. 导线网
C. 边角网
D. 三角网
[单选题]变电作业现场指在运用中的20kV以上（）、变电设备上及相关场所进行工作的作业现场。
A.发电
B.输电
C.信息
D.配电
[单项选择]含膳食纤维较多的食物为（）
A. 鱼、奶
B. 粮谷、蔬菜
C. 肉、蛋
D. 果汁
E. 豆浆
[判断题]温州S1线AGM回收模块能回收所有已知的地铁票。（ ）
A.正确
B.错误
[单项选择]以下描述中不是气流干燥特点的是（）。
A. 工艺气体温度高
B. 干燥时间短
C. 在干燥管内停留6～7秒
D. 膨胀效果明显
[判断题]井下紧急避险系统包括临时避难硐室永久避难硐室和救生舱。
A.正确
B.错误
[填空题]参与公司系统所承担电气工作的外单位或外来人员工作人员应熟悉《安规》、经考试合格，并经（）认可，方可参加工作。
[判断题]党的十九大报告指出，协调是持续健康发展的内在要求。
A.正确
B.错误
[单选题]锌元素的主要生理功能不包括（ ）
A.维持免疫功能
B. 促进生长和发育
C. 酵素组分
D. 缓冲剂
[单选题]CRH5型动车组牵引电机的悬挂方式为（ ）。
A.体悬式
B.抱轴式
C.架悬式
D.感应式
[单项选择]在Microsoft Word中点击“文件”→“另存为”，在保存类型下拉框中不能选择的有 (45) 。
[多项选择]在施工现场，应按国家现行标准抽取钢筋（ ）试件作为力学性能检验，其质量应符合有关规程的规定。
A. 绑扎连接接头
B. 机械连接接头
C. 法兰连接接头
D. 挤压连接接头
E. 焊接接头
[判断题]使用汽车运输，在工程未开工前，应指定专人对运输道路进行检查，确定运输路线。
A.正确
B.错误
[多选题]在以下设备互连时应该使用交叉网线的是（ ）
A.交换机普通口到路由器以太口
B.集线器级连口到交换机级连口
C.交换机普通口到交换机普通口之间
D.集线器普通口到集线器级连口之间
[单项选择]票据行为是产生、变更、消灭票据上权利义务关系的法律事实。法律上不具有的特征是（）
A. 票据行为是一种要式行为
B. 票据行为是一种独立行为
C. 票据行为是一种无因行为
D. 票据行为是一种附属行为
[单选题]钨极氩弧焊采用什么( )引弧。 【单选题】
A.短路
B.高频高压
C.敲击法
D.划擦法
[单项选择]What do we know about the flight
A. There will be a short delay.
B. There will be a long delay.
C. The flight has been cancelled.
D. The condition is still uncertain.
[单项选择]Ⅱ型呼吸衰竭的动脉血气诊断标准是（）
A. PaO2<50mmHg，PaCO2>60mmHg
B. PaO2<65mmHg，PaCO2>45mmHg
C. PaO2<60mmHg，PaCO2>50mmHg
D. PaO2<75mmHg，PaCO2>45mmHg
E. PaO2<50，PaCO2>40mmHg
[单选题]搬运物料描述错误的是( )
A.开箱就佩戴手套并正确使用工具
B.搬运设备必须有足够的人力和可靠的搬运工具,索具绑扎坚固,防止人员被碰伤、压伤
C.搬运带强腐蚀性液体的物料时,可以按照任意朝向搬动
D.设备固定过程中必须有有协助保持机械平衡,防止机柜倾覆
[单选题]下列关于决策的说法错误的是( )。
A.决策是由人的主观意志对客观存在的多种可能性进行选择
B.决策是以人的主观意志为转移的一项活动
C.决策选择是高级的认识选择
D.决策选择主要是依据事实判断来进行的
[不定项选择题]共用题干
The Roadrunner
The roadrunner（走雀）lives in the desert zone of the southwestern United States and
northern Mexico._________(1)People gave it its name because they usually see it
running across a road,but of course,it spends more time among the plants of the desert
than it does on roads.
The roadrunner is quite a large bird-about 45 centimeters long and 25 centimeters high.
______(2)It holds its head straight out in front and its tail sticks straight out in back.
It takes long steps and can run 30 kilometers an hour.
It eats an amazing variety of food.Although it eats plants once in a while,it is mostly a
meat eater.Most of its diet is insects,but it also catches birds,mice,and other small
animals.It is even brave enough to catch snakes and black widow spiders（蜘蛛）.
_________(3)When he finds one,he gives her presents a snake to eat or a tiny
branch of a tree to use in building a nest.Then they build their nest,the female lays eggs,
and they raise their young.
_________(4)One couple in Arizona feeds a pair of roadrunners that come once at
a time every day and make a noise outside the window.If someone doesn't give the bird a
piece of hamburger immediately,the bird knocks on the window with its beak（喙）.
Roadrunners are not shy.
__________(5)They will stand on a chair or table and watch television,and they
seem really interested in what is happening on the program.
__________（5）
A.Roadrunners can also become friendly with people.
B.People laugh when it runs because it looks so funny.
C.Itisabird,but it can only fly about as much as a chicken can.
D.In early spring,the bird doesn't eat anything.
E.Another couple feeds a pair of roadrunners that go right into the house.
F.In the spring,a male roadrunner begins looking for a female as a mate.
[单选题]LKD1-T型车站列控中心机柜顶部风扇工作电压为( )。
A.DC24V
B.DC36V
C.AC110V
D.AC220V
[判断题]警情受理复盘的报告警情评价指是否要素齐全准确、用语文明规范、掌握询问方法。（）
A.正确
B.错误
[多选题]下列符合警务人员在涉外活动与外宾交往的礼仪项是。
A.非常热情以显示我礼仪之邦的风范
B.充分尊重他人的隐私
C.本着女士优先的原则
D.对方国家贫穷,其国格人格有时可以忽略。
[判断题]线路曲线地段，实设最大超高，在单线上不得大于120 mm。（ ）
A.正确
B.错误
[判断题]举高消防车的升降斗主要用于运送灭火救援装备。
A.正确
B.错误
[填空题]
[A] But soon the settlers wanted bigger farms and more land for themselves and their families. More and more immigrants were coming from Europe and all these people needed land. So the Europeans started to take the land from the Indians. The Indians had to move back into the center of the continent because the settlers were taking all their land.
[B] By 1857 the Indians had lost the fight: they were living in special places called "reservations". But even here the White Man took land from them -- perhaps he wanted the wood, or perhaps the land had important minerals in it, or he even wanted to make national parks there. So even on their reservations the Indians were not safe from the White Man. Between 1500 and 1900 the Indian population of the area that is now the United States declined from close to 1,000, 000 to 300, 000. and for those remained, the agony was great. Many were forced to take land in new and strange places. They were introduced to new tools, im
[判断题] ( )(? )加强对事故隐患的控制管理,对于预防特大安全事故有重要意义。
A.正确
B.错误
[单项选择]Jet lag is back on the agenda for business travelers, especially as long-haul international traffic picks up again.
There is endless advice online about jet lag. Drugs are frequently mentioned, and a recent favorite is Nuvigil, used to treat excessive sleepiness. Nuvigil’s manufacturer, Cephablon, has so far not succeeded in obtaining government approval for its plan to market the drug as a remedy forjet lag.
But the approach I hear most often from long-haul travelers involves diet and preparation. " Why would you take a pill that your body then has to shake off " said Lynne Waller Scanlon, the author, with Charles F. Ehret, of Overcoming Jet Lag, which was a best seller in the mid-1980s but went out of print until she revised and republished it last year under a snappier title, The Cure for Jet Lag.
The book lays out a treatment system for jet lag based on pre-trip diet and conditioning to reset the body’s internal clock. The book suggests resetting the body clock so th
A. Drugs for Jet Lag
B. The Best-selling book on Jet Lag
C. Treatment for Jet Lag
D. Enjoy Your Flight
[单项选择]tRNA反密码子第1位碱基I可与mR-NA上密码子第3位碱基U、C或A配对，属于密码的（）。
A. 连续性
B. 特异性
C. 通用性
D. 摆动性
E. 简并性
[多项选择]气体钻井流体的主要特点（）。
A. 环空返速及洗井和携屑能力是油和水的5倍
B. 液柱压力低，仅有2.5～4.5mPa
C. 对各种无机盐类有较好的适应性，污染轻、性能变化小
D. 岩屑清晰，便于分析
E. 能较好地保护产层，减轻损害
