热门试题:
[判断题]21312】输电线路在山区单避雷线对导线的保护角一般为25°左右。 ( )
A.正确
B.错误
[单项选择]急性酒精中毒应用哪种检查方法()。
A. 高铁血红蛋白测定
B. 碳氧血红蛋白测定
C. 毒物检测
D. 腹部X线片
E. 乙醇定性检测
[单选题] 识别出的风险可分为()级。
A.1
B.2
C.3
D.4
[判断题]国家秘密知悉范围内的机关、单位,其有关工作人员不在知悉范围内,但因工作需要知悉国家秘密的,应当经本单位负责人批准。( )
A.正确
B.错误
[判断题]
接到邻国(地区)、使(领)馆、外籍船舶、军事管理区等特殊区域报警或者救援时,应当立即出动。( )
A.正确
B.错误
[单选题]下列哪项是脑血栓形成最常见的病因
A.高血压
B.血液黏稠,血流速度慢
C.动脉粥样硬化
D.动静脉畸形
E.血管痉挛
[单项选择]
When an invention is made, the inventor has three possible 61 of action open to him; he can give the invention to the world by publishing it, keep the idea 62 , or patent it.A 63 patent is the result of a bargain 64 between an inventor and the state, but the inventor gets a limited period of monopoly and publishes full details of his invention to the public after that period 65 .
Only the most exceptional circumstances 66 the lifespan of a patent 67 to alter this normal process of events.
The longest extension ever 68 was to Georges Valensi; his 1939 patent for color TV receiver circuit was extended until 1971 because for most of the patent’s normal life there was no color TV to 69 and thus no hope for reward for the invention.
Because a patent remains permanently 70 after it has terminated, the shelves of the library attached to the 71 office contain details of literally mi
A. customer
B. commerce
C. patent
D. television
[单项选择]某网络计划中,工作M的自由时差为3天,总时差为5天。通过检查分析,发现该工作的实际进度拖后,且影响总工期2天。在其他工作均正常的前提下,工作M的实际进度拖后()天。
A. 5
B. 7
C. 6
D. 9
[单项选择]()比例混合器就是供水支管向泡沫液贮罐内注入压力水,作用于泡沫液上,使泡沫液通过出液阀进入比例混合器,并与水混合形成混合液。
A. 贮罐式压力
B. 压力输送
C. 平衡压力输送
D. 环泵式
[判断题]桥梁荷载试验的荷载分级一般可分为4-5级。
[单项选择]
In the 1950’s accumulating scientific evidence linking cigarette smoking and lung cancer made a (51) impact (52) the smoking public. During this period many health agencies declared smoking to be a (53) Hazard. US Surgeon General Leroy E. Brunei said in 1957: "The weigh of the evidence is increasingly pointing to one direction: that (54) smoking is one of the causative factors in lung cancer." The initial reports had the heaviest impact, so (55) total cigarette production dropped in 1953 and again in 1954. (56) reports appeared to have less (57) on smoking habits, and by 1957 cigarette production had (58) above the 1952 level.
(59) four voluntary health organizations urgued president John F. Kennedy to (60) a commission to study the widespread implications of the tobacco problem, the Surgeon General’s Advisory Committee on Smoking and Health was (61) in 1962 to review and ev
A. far
B. long
C. much
D. that
[单项选择]数据字典是定义下列哪种模型中的数据的工具
A. 系统流程图
B. 数据流程图
C. 程序流程图
D. 软件结构图
[多项选择]同时符合下列哪些条件,可以使用一张带电作业工作票?()
A. 由同一个监护人监护的工作
B. 在同一变电站或发电厂升压站内进行
C. 依次进行的工作
D. 同一类型的带电作业工作
[单选题]CRH2A型动车组踏面清扫装置安装螺栓扭矩为( )N.m。
A.40-50
B.40-60
C.20-40
D.45-55
[单项选择]关于临床化学的基本概念不恰当的是
A. 它是一门新兴的、年轻的学科
B. 它是化学、生物化学和临床医学的结合
C. 目前已经发展成一门成熟的独立学科
D. 它是一门实践性比理论知识更重要的应用学科
E. 它是检验医学中一个独立的主干学科
[多选题]准乘软席的人员范围为( )。
A.正、副局长和相当职级的人员
B.教授和相当专业技术职务的人员
C.年满五十周岁的正、副科长和相当职级的人员
D.教授和相当专业技术职务的人员
[判断题]移出剖面的图形画在视图之外,轮廓线用细实线绘制
A.正确
B.错误
[填空题]驻站(所)联络员、现场防护员必须具有高度的<--NRC-->,具备基本的安全知识和技能,熟悉铁路行车有关规章制度和施工作业情况。
[填空题]在面向对象方法中,______描述的是具有相似属性与操作的一组对象。
[判断题] 依据《机动车查验工作规程》GA801-2019查验合格要求规定,2019年1月1日起出厂的危险货物运输半挂车及2020年1月1日起出厂的三轴栏板式和仓栅式半挂车,其所有车轮均应装备盘式制动器。
A.正确
B.错误
[单选题]安全生产工作应当( )。
A.以人为本
B.坚持人民至上
C.坚持生命至上
D.把保护人民生命安全摆在首位
[单选题]客运职工职业道德中遵章守纪:做到服从命令,();
A.业务熟练
B.举止文明
C.执行标准
D.不徇私情
[判断题]正确错误严格日期格式在任何情况下都可使用。
[单选题]担当救援的动车组列车需要跨区段担当救援任务时,列车调度员须通知机车调度员(动车司机调度员)指派带道人员。
A.正确
B.错误
[单项选择]下面哪一项不属于工作的三个时期()
A. 适应期
B. 稳定和发展期
C. 衰退期
D. 高潮期
[单选题]按照形成资产法编制建设投资估算表,下列费用中可计入无形资产费用的是( )。
A.研究试验费
B.非专利技术使用费
C.引进技术和引进设备其他费
D.生产准备及开办费
[判断题]当电路发生短路或严重过负荷时,熔断器能自动切断故障电路,从而使电器设备得到保护。
A.正确
B.错误
[单选题]用凿子凿坚硬或脆性物体时(如生铁、生铜、水泥等),应戴( ),必要时装设安全遮栏,以防碎片打伤旁人。
A.口罩
B.耳罩
C.防护眼镜
D.防毒面具
[单选题]支座底板的锚固螺栓埋入墩台深度不小于( )。
A.300mm
B.350mm
C.400mm
D.500mm
[多项选择]下列选项中哪些药物与红霉素合用产生药理性拮抗作用( )。
A. 林可霉素
B. 氯霉素
C. 链霉素
D. 四环素
E. 万古霉素
[多项选择]逆流再生固定床的压实层厚度过小,会使()。
A. 悬浮物渗入树脂层
B. 反洗时流失树脂
C. 气顶压时中间排水装置进气不均匀
D. 进水冲动交换剂表面
[多项选择]讲话稿的开头很重要,寥寥几句就会产生很大作用。写其开头的方法很多,没有固定模式,比较常用的方式有()
A. 平铺直叙式
B. 开宗明义式
C. 象征比喻式
D. 总结提要式
E. 表明态度式
[单项选择]原发性腹膜炎的病原菌最多为
A. 大肠杆菌或厌氧类杆菌
B. 肺炎双球菌或变形杆菌
C. 溶血性链球菌或变形杆菌
D. 溶血性链球菌或肺炎双球菌
E. 多种细菌的混合感染
[填空题] 保险柜的存放房间应配备“三铁、一器、一镜”,即:()、()、(),(),()。保险柜需靠墙固定。
[单选题]新经济组织和新社会组织的简称( )
A.“非公有制经济组织”
B.“两新组织”
C.非国有集体独资的经济组织
D.各类民间性的社会组织
[单项选择]Questions 1 to 5 are based on the following passage:
Television has opened windows in everybody’s life. Young men will never again go to war as they did in 1914. Millions of people now have seen the effects of a battle. And the result has been a general dislike of war, and perhaps more interest in helping those who suf-fer from all the terrible things that have been shown on the screen.
Television has also changed politics. The most distant areas can now follow state affairs, see and hear the politicians before an election. Better informed, people are more likely to vote, and to make their opinions count.
Unfortunately, television’s influence has been extremely harmful to the young. (76) Children do not have enough experience to realize that TV shows present an unreal world; that TV advertisements lie to sell products that are sometimes bad or useless. They believe that the violence they see is normal and acceptable. All educators agree that the "television
A. discuss politics at an information center
B. show more interest in politics
C. make their own decisions on political affairs
D. express their opinions freely
[单选题]大件修、小件修按处理方式分为:更换、补装、调整、( )、恢复、修复等。
A.处理
B.紧固
C.放行
D.处理放行