热门试题:
[多选题] 对辊缝的作用叙述正确的有( )
A.使辊环或上下辊相互间不磨擦,通过调整辊缝值的大小可以改变孔型的尺寸,以提高轧辊的共用性
B.增大辊缝值可相对地减少轧槽刻入的深度,提高轧辊的强度,也增加了轧辊的允许重车次数,延长轧辊的使用寿命
C.调辊缝还可以补偿过钢时轧辊的磨损量,但不能调整孔型到设计的高度
[单项选择]After he has written his paper, he found some additional material () he should have included.
A. that
B. of which
C. in which
D. whom
[多项选择]相互接触时,可能会大量放热并着火、爆炸的有()。
A. KMnO4和乙醇
B. KMnO4和浓硫酸
C. CCl4和碱金属
D. 浓HNO3和胺类
[多选题]治疗肾精亏耗之健忘,宜选用的药物有
A.人参、山药
B.黄精、枸杞子
C.黄芪、益智仁
D.龟甲、阿胶
[单选题]标题栏应画在图框的()。
A.左上角
B.左下角
C.右上角
D.右下角
[单选题]在运行中,电流的热量和电火花或()等都是电气火灾的直接原因。
A.A、、电弧
B.B、、电压高低
C.C、、环境温度
[多选题]法律关系主体应具备()能力。
A.财产能力
B.-权利能力
C.管理能力
D.知识能力
E.行为能力
[单选题]齐步、正步、礼步行进时,听到立定的口令,左脚再向前大半步着地,脚尖向外约()度,两腿挺直,右脚取捷径迅速靠拢左脚,成立正姿势。
A.20
B.30
C.60
D.75
[单选题]下列哪个选项不是常用的安全电压( )。
A. 12V
B. 110V
C. 24V
D. 36V
[判断题]当有人在半封闭容器内进行电焊作业时,严禁向内部送氧。( )
A.正确
B.错误
[单选题]蔡某,75岁,左侧肢体瘫痪,为预防压力性损伤发生,最简单而有效的方法是
A.经常翻身
B.进行肢体功能锻炼
C.应用减压敷料
D.应用减压床垫
[单项选择]
2001年末,全国共有艺术表演团体2622个,文化馆2911个,公共图书馆2769个,博物馆1373个,档案馆3816个;共出版全国性和省级报纸203亿份,各类杂志 28.5亿册,图书63.5亿册;共有中、短波广播发射台和转播台1313座,电视综合人口覆盖率93.4%;全国有线电视用户7920万户,成为世界上有线电视用户最多的国家。
如果总人口12.9亿,则电视综合人口覆盖()。
A. 12.9亿
B. 12.05亿
C. 13.1亿
D. 12.69亿
[单选题]1955年,中国的国民生产总值占世界的( )。
A.4.7%
B.5.7%
C.6.7%
[判断题]侵权责任的承担方式只可以单独使用,不能合并适用。
A.正确
B.错误
[多选题]一级化学防护服为( )连体式全密封结构,由大视窗的等组成。同正压式消防空气呼吸器.消防员呼救器及通信器材等设备配合使用
A.连体头罩.化学防护服.内置正压式消防空气呼吸器背囊
B.化学防护靴.化学防护手套
C.密封拉链.超压排气阀
D.通风系统
[简答题]何为避雷针的逆闪络?防止逆闪络的措施是什么?
[判断题]同一条线路的两套继电保护和同一系统的两套安全自动装置应配置两套独立的通信设备,并分别由两套电源供电,两套通信设备和电源在逻辑上应完全隔离。
A.正确
B.错误
[单选题]B60.在办理个人自助循环贷款业务时,自助途径借款、还款均以贷款人业务系统形成的()为准。
A.电子记录
B.电子档案
C.纸质材料
D.放款凭证
[判断题]口令设置是信息系统的第一道屏障,因此口令保护就显得尤其重要。
[判断题]用节点电位法解题的思路是以节点电位为未知数,按KCL列方程,求出节点电位,最后求出各支路路电流。
A.正确
B.错误
[单项选择]关于视神经脑膜瘤的临床特点,下列哪项叙述是不正确的()。
A. 多见于中年妇女
B. 无痛性、缓慢眼球突出伴视力下降
C. 眼底可见视乳头水肿、视神经萎缩以及视盘血管异常
D. CT检查可发现视神经呈弥漫性或球形扩大
E. 容易恶变
[单选题] 常用的热膨胀补偿器有Ω型、Π型和波型。 [1分]
A.正确
B.错误
[单项选择]女,36岁,中度哮喘患者,就诊时下述指标中对于判断哮喘严重程度更为准确的是
A. 奇脉(10~25mmH
B. 心率加快(110次/分)
C. 房室传导阻滞
D. 房性早搏(2次/分)
E. 血压升高(145mmH
[多选题]电缆工必须掌握的初步起重运输知识,下列说法正确是()
A. 人力搬动重物时,必须同时起立和放下,互相配合,上斜坡时,后面的人员身高应比前面的人员高,下坡时反之
B.应掌握必要的绳扣运用知识
C.懂得常用起重工具的工作原理和使用要领
D.电缆盘在滚动时,必须按顺着电缆的牵引方向滚动
[单选题] 从( )最能看出一个人的品质,从最细微的小处最能显示人的灵魂。
A.言谈举止
B.大众场合
C.最隐蔽处
D.工作场合
[判断题]化学防护靴靴面和接缝部位抗化学品渗透时间:≥60min。
[单选题]566.不符合子宫颈癌的描述是
A.A.上皮内肿瘤是癌前病变
B.B.原位癌是可治愈的癌
C.C.原位癌累及腺体
D.D.高分化腺癌可引起黏液分泌增多
E.E.淋巴道转移多见
[单选题] 中共制定民主革命纲领的会议是 ____
A.中共一大
B.西湖会议
C.中共二大
D.中共三大
[单选题]在被检定、校准、检测直流电桥的所有测量端与外壳的参考“地”之间加频率为50Hz实用正弦波的交流电压,历时1min,击穿电流为(____)mA,试验中不应出现击穿或飞弧现象。
A.1
B.3
C.5
D.10
[填空题]臀位可分为______、______、______三类。
[单选题]旅客列车列尾装置尾部主机的安装与摘解、风管及电源的连结与摘解,由()负责
A.机务部门
B.车辆部门
C.调车部门
D.车站部门
[判断题]《铁路旅客运输服务质量规范》规定,应急照明系统覆盖车站进出站、候车、售票、站台、天桥、地道等处所,状态良好。
A.正确
B.错误
[不定项选择题]A.战略决策
A.战术决策
B.常规决策
C.非常规决策
D.团体决策
E.涉及面广、偶然性大、不定因素多、无先例可循、无既定程序可依的决策是
[判断题] 在变压器闭合的铁芯上,绕有两个互相绝缘的绕组,其中,接入电源的一侧叫二次侧绕组,输出电能的一侧为一次侧绕组。()
A.正确
B.错误
[不定项选择题]共用题干
The Arctic Ice is Thawing
Father Christmas may have to move his"workshop"from the North Pole because global warming is thawing the ice beneath his feet and his reindeers' feet as well.His"workshop"is in dire straits. The"platform"for the"workshop"is melting,said Stefan Norris of the World Wildlife Fund Environmental Group's Arctic Program.
An eight-nation report by 250 scientists published recently predicted the Arctic Ocean could be ice-free in summer by 2100 because of a build-up of heat-trapping gases in the atmosphere,mainly from burning fossil fuels in cars or factories.The North Pole is getting more and more inhabitable to Father Christmas._______(46)Young people learn that,Father Christmas'"workshop"produces millions of gifts delivered by him on a flying,reindeer-drawn sleigh.Hollywood movies like The Polar Express tried to make viewers believe that Father Christmas lives at the North Pole._______(47)
The"Fortress of Solitude"is near the North Pole that could be under threat in a warmer world.
Ian Boldt,spokesman of the Danish Ministry of Science,suggested ways to rescue Father Christmas. _______(48)Another alternative,he argued,would be building some electrical facilities to ensure the ice stays on the North Pole for him."This should be a subject for the United Nations."he said. "Danmark could build windmills to provide Father Christmas with power."Denmark says Father Christmas's real home is Greenland,which will help,Denmark thinks,to strengthen its position in claiming the sovereignty over the Pole._______(49)
"Doesn't he already speak Danish?"Boldt said frostily when asked if Father Christmas would be forced to learn Danish if Denmark won international recognition of its claim to the Pole.Last month's Arctic report said the region is warming twice as fast as the rest of the globe,partly because dark ground or water,once uncovered,soaks up more heat than ice or snow. Finland has been most favored by Father Christmas and it has about 500,000 tourists a year to visit its Christmas center in Rovaniemi in Lapland._______(50)
__________(49)
A.However,Nordic nations all reject it by claiming that their countries are his home.
B.Therefore the North Pole is the most attractive place in the world.
C.If Denmark's claim were accepted internationally,it would have the legal right to search for oil and gas at the North Pole.
D.One of them would be building a giant floating ice rink for the workshop if the Pole thaws.
E.Maybe Father Christmas has already moved to Rovaniemi.
F.He may have to move from the North Pole within one children's lifetimes.
[单项选择]Magnetic heading differs from compass heading by().
A. compass error
B. true heading
C. variation
D. deviation
[单选题]在室外高压设备上工作,工作地点四周围栏上悬挂适当数量的()标示牌,标示牌应朝向围栏里面。
A.“从此进出!”
B.“在此工作!”
C.“止步,高压危险!”
D.“从此上下!”