热门试题:
[单选题]光纤直放站设备下行输出功率是（ ）W。
A.3
B.5
C.8
D.10
[填空题]捣固车处于运行状态且档位未处于空挡位时，禁止发动机熄火和（）发动机。
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A. College students preparing to work in some big companies.
B. College students preparing to study for a degree.
C. High school graduates preparing to have a home training.
D. High school graduates preparing for college entrance examinations.
[判断题]变压器不对称运行，对变压器本身危害极大
A.正确
B.错误
[单选题]摘解时,副驾驶下车指挥,正驾驶确认列车制动主管减压( )以上,再按“一关前、二关后、三摘软管、四提钩”的顺序进行摘解作业。
A.50kPa
B.100kPa
C.240kPa
D.300kPa
[填空题]第二批政法队伍教育整顿整治条线顽瘴痼疾，要开展（），对第一批教育整顿顽瘴痼疾整治中发现的 （）问题进行梳理分析，找准问题症结，健全制度机制、补齐短板漏洞，推动（）、显性问题与深层次问题一起解决。
[单项选择]在我国引起急性胰腺炎的最常见病因是（）
A. 胆石症与胆道疾病
B. 大量饮酒和暴饮暴食
C. 胰管阻塞
D. 手术与创伤
E. 内分泌与代谢障碍
[填空题]允许在机车、车辆运行中上下车时，车速不得超过（ ）km/h。
[单选题]夫妻间的人身关系不包括：（ ）
A. 身份关系
B. 继承关系
C. 人格关系
D. 地位关系
[多项选择]下列可作为磨具结合剂的是（）。
A. 陶瓷胶合剂
B. 树脂胶合剂
C. 橡胶胶合剂
D. 水泥胶合剂
[判断题]公安机关的职责决定了公安机关的性质和任务。( )
[单选题]除颤时电极板分别置于
A.胸骨左缘第二肋间及心尖区
B.胸骨左缘第二肋间及心底区
C.胸骨右缘第二肋间及心底区
D.胸骨右缘第二肋间及心尖区
[单选题]糖尿病代谢紊乱加重时，脂肪动员和分解加速，脂肪酸在肝脏经β氧化产生大量乙酰乙酸、____和丙酮，三者统称为酮体()
A.β-羟丁酸
B.胰高血糖素
C.A细胞
D.血游离脂肪酸
E.丙酮酸
[单选题]党的中央和省、自治区、直辖市委员会实行( )制度,建立专职巡视机构,在一届任期内对所管理的地方、部门、企事业单位党组织全面巡视。( )
A.巡察
B.巡视
C.派驻
D.监督
[单选题]T系列热继电器带有( )保护机构,当电动机在断相运行时,能可靠切断电源。
A.断相
B.短相
C.连相
D.单相
[单选题]“注意安全”、“当心车辆”等这些适用于厂内交通运输的安全标志属于（ ）。
A.指示标志
B.警告标志
C.禁令标志
D.辅助标志
[单选题]6?63kV系统可采用中性点不接地系统，以提高供电连续性但单相接地电流大于允 许值时，可装设消弧线圏。
同一变电所内如有两台变压器可先设一个消弧线圏，但应（）。
A.两台主变压器中性点接一个消弧线圈；
B.两台主变压器中性点经隔离开关接至一个消弧线面；
C.两只隔离开关平时只合一只；
D.两只隔离开关平时都打开
[多选题]下列哪些情况应将重合闸停用（ ）
A.线路长期充电运行时
B.线路带电作业要求时
C.重合闸装置异常
D.开关遮断容量不允许重合时
[单项选择]（）能够调动和发挥团队成员的最大潜能。
A. 良好的沟通责任制
B. 共同的信念
C. 团队领导者的能力
D. 良好的团队环境
E. 团队的目标
[填空题]TYJL-ADX型计算机联锁，检查插接件、电路板，要求接触良好，不 ，无异状，接点无氧化，无脱焊，固定牢固，电路板表示灯显示正确。
[多项选择]肺吸虫病需与下列哪几种疾病相鉴别（）
A. 肺结核和结核性胸膜炎
B. 脑型血吸虫病和囊虫病
C. 脑肿瘤
D. 病毒性肝炎、肝硬化
E. 以上都不是
[单项选择]LGE可换孔板节流装置可动部件均采用1Gr18Ni9Ti材料及（）处理
A. 低温
B. 磁化
C. 防腐
D. 高温
[单项选择]Questions 22 to 25 are based on the conversation you have just heard.A. Travel to that library to get it. B. Pay to use it.
C. Read it in the graduate school library. D. Order the material from the publisher.
[单项选择]在下列固定资产折旧方法中，每年折旧率均相等的是( )。
A. 平均年限法
B. 年数总和法
C. 双倍余额递减法
D. 工作量法
[判断题]生产装置中催化剂补充速度和中毒状况相同的条件下,平衡活性越高说明稳定性越好。 ( )
A.正确
B.错误
[单选题] 发电机的电压波动率应()。
A.≤1.0%
B.≤1.5%
C.≤2.0%
D.≤2.5%
[简答题]车站调车人员在调动危险货物车辆时，车站管理人员应重点对（ ）、调车关键控制、作业纪律等方面进行盯控。
[单项选择]The director of a secondary school where many students were having severe academic problems impaneled a committee to study the matter. The committee reported that these students were having academic problems because they spent large amounts of time on school sports and too little time studying. The director then prohibited all students who were having academic problems from taking part in sports in which they were active. He stated that this would ensure that such students would do well academically.
The reasoning on which the director bases his statement is not sound because he fails to establish that
A. some students who spend time on sports do not have academic problems.
B. all students who do well academically do so because of time saved by not participating in sports.
C. at least some of the time the students will save by not participating in sports will be spent on solving their academic problems.
D. no students who do well academically spend time on sports.
E. (E) the quality of the school’s sports program would not suffer as a result of the ban.
[单选题]在Ⅱ型超敏反应中
A.细胞毒性抗体直接引起靶细胞溶解
B.Tc细胞参与反应而导致细胞被杀伤
C.组胺的释放在早期起重要作用
D.补体活化导致细胞或组织损伤的机制
E.中性粒细胞杀伤作用导致组织损伤
[单项选择]下列关于E-R模型向关系模型转换的叙述中，哪一条是不正确的？（）
A. 一个实体类型转换为一个关系模式
B. 一个m：n联系转换为一个关系模式
C. 一个1：1联系可以转换为一个独立的关系模式，也可以与联系的任意一端实体所对应的关系模式合并
D. 一个1：n联系可以转换为一个独立的关系模式，也可以与联系的任意一端实体所对应的关系模式合并
[单选题]室外地上消火栓的优点是( )( 中 )
A.目标明显
B.不易冻结
C.不易损坏
D.不易寻找和使用
[填空题]当设备出现异常或需要紧急停车时，需按下（）。
[单项选择]( )又称为性能指标达标考核。
A. 技术交底
B. 数量交底
C. 安全交底
D. 生产日期交底
[判断题]凡未办理验交的线路、桥隧等设备，由施工单位负责巡查养护。（ ）
A.正确
B.错误
[单选题] 高处作业区周围的孔洞、沟道等应设( )并有固定其位置的措施。
A.盖板
B.盖板、安全网
C.盖板、安全网或遮栏（围栏）
D.专人监护.
[单选题]丹参醌ⅡA的结构类型是
A.苯醌类
B.萘醌类
C.蒽醌类
D.菲醌类
E.蒽酮类
[单项选择]As Commander-in-Chief of the armed forces, I have directed that all measures______ for our defense.
A. had been taken
B. would be taken
C. be taken
D. to be taken
