热门试题:
[单项选择]在层次网络体系结构中,第N层协议利用 (28) 提供的服务向 (29) 提供服务,称 (29) 是N服务的 (30) , (30) 是利用 (31) 通过 (32) 调用N层协议的服务的。
A. 实体
B. 提供者
C. 用户
D. 服务者
[判断题]调车手信号指挥机车向显示人反方向去的信号,昼间用展开的绿色信号旗上下摇动,夜间用绿色灯光上下摇动。
A.正确
B.错误
[单项选择]有关特征X线的解释,错误的是()
A. 特征X线是高速电子与靶物质原子的轨道电子相互作用的结果
B. 特征X线产生的X线的质与高速电子的能量有关
C. 特征X线的波长,由跃迁的电子能量差所决定
D. 靶物质原子序数较高时,特征X线的能量就大
E. 管电压70kV以下,不产生K系特征X线
[单选题]CR400AF型动车组中间直流环节直流电压:( )。
A.1500V
B.1900V
C.2500V
D.3600V
[单选题]对担任领导职务的管理指挥干部和兼任领导职务的专业技术干部实施处分,按照其中( )的处分权限执行。
A.较低
B.任意一个
C.较高
D.以上都不对
[判断题]WJ-7型扣件锚固螺栓扭矩为300~350N·m。
A.正确
B.错误
[判断题]侧门旋动时,液控管路内应保持一定的压力。
A.正确
B.错误
[单项选择]老舍完成《老张的哲学》、《二马》、《赵子曰》三部小说写作是在( )
A. 美国
B. 法国
C. 中国
D. 英国
[判断题]锯高压电缆前,必须与电缆图纸核对无误,并验明电缆无电压后,用接地的带木柄的铁钎钉入电缆芯后方可工作。扶木柄的人应戴绝缘手套,并站在绝缘垫上。
A.正确
B.错误
[单选题]安全带是预防坠落伤亡的个体防护用品,由带子、绳子和金属配件组成。使用安全带时,下列操作中正确的是( )。
A.高挂低用
B.缓冲器、速差式装置和自锁钩可以串联使用
C.绳子过长,可以打结使用
D.使用时挂钩应挂在安全绳上使用
[单选题]如何进行口罩气密性检查,下列描述正确说法的是
A.查看口罩产品包装袋生产日期
B.查看口罩产品包装袋是否有破损
C.打开口罩看大小尺寸,越宽松越好
D.双手捂住口罩呼吸气,观察感觉口罩有略微鼓起或塌陷
[单选题]轿车上常采用( )式制动器。
A.双领蹄
B.双从蹄
C.领从蹄
[多项选择]26.微观消费与宏观消费的关系是()
A. 两者之间是平行关系
B. 两者之间是包容关系
C. 两者之间是并列关系
D. 宏观消费问题是微观消费问题的目的
E. 微观消费问题是宏观消费问题的基础
[单选题]终止用电是指供用电合同双方当事人( )了合同关系。
A.暂时中止
B.停止
C.变更
D.解除
[单项选择]高血压病的诊断标准是
A. 收缩压≥200mmHg,舒张压≥130mmHg
B. 收缩压≥180mmHg,舒张压≥110mmHg
C. 收缩压≥120mmHg,舒张压≥80mmHg
D. 收缩压≥160mmHg,舒张压≥90mmHg
E. 收缩压≥140mmHg或(和)舒张压≥90mmHg
[判断题]低温甲醇装置中原料气终冷器E-40003A/B为单台操作,多管程绕管式换热器。( )
A.正确
B.错误
[单选题] 四川省东部为中国四大盆地之一的四川盆地,属中国地势(
A.第一阶梯
B.第2阶梯
C.第三阶梯
D.第四阶梯
[判断题]一般保证的债权人未在保证期间对债务人提起诉讼或者申请仲裁的,保证人仍需要承担保证责任
A.正确
B.错误
[单项选择]在我国的地价体系构成中,从地价的特点看,基准地价属于( )。
A. 区域平均地价
B. 市场价格的平均值
C. 成交地价的平均水平
D. 评估价格的平均值
[填空题]监护操作时,其中一人对设备较为熟悉者作监护。特别重要和复杂的倒闸操作,由熟练的运维负责人操作,工区领导监护。( )
[单项选择]综合布线要求设计一个结构合理、技术先进、满足需求的综合布线系统方案,下列哪项不属于综合布线系统的设计原则。()
A. 不必将综合布线系统纳入建筑物整体规划、设计和建设中
B. 综合考虑用户需求、建筑物功能、经济发展水平等因素
C. 长远规划思想、保持一定的先进性
D. 扩展性、标准化、灵活的管理方式
[单选题]KMI/PKI支持的服务不包括( )。
A.非对称密钥技术及证书管理
B.对称密钥的产生和吩咐
C.访问控制服务
D.目录服务
[单项选择]最易导致脑萎缩的因素是()
A. 颅内压升高
B. 脑膜刺激征
C. 脑脓肿
D. 脑动脉粥样硬化
E. 颈内动脉栓塞
[单选题]交流电动机直接启动控制方式中,会因()过大,而影响同一线路其他负载的其他工作。
A.启动电压
B.启动电流
C.启动转矩
D.启动转速
[单项选择]预防矫治是从何时开始的()
A. 自胚胎第3周
B. 自胚胎第4周
C. 自胚胎第5周
D. 自胚胎第6周
E. 自胚胎第7周
[单项选择]昭阳K43内置的蓝牙模块采用的接口是()
A. USB
B. PCI-E 1X
C. LPC
D. PCI
[多选题]物资管理现场监督是指对物资管理相关业务环节实施现场旁站式监督的过程,其中相关业务环节包括( )。
A.开评标现场
B.供应商资质业绩核实现场
C.非招标谈判现场
D.废旧物资竞价处置现场
[单项选择]The world is going through the biggest wave of mergers and acquisitions ever witnessed. The process sweeps from hyperactive America to Europe and reaches the emerging countries with unsurpassed might. Many in these countries are looking at this process and worrying: "Won’’ t the wave of business concentration turn into an uncontrollable anti-competitive force"
There’’s no question that the big are getting bigger and more powerful. Multinational corporations accounted for less than 20% of international trade in 1982. Today the figure is more than 25% and growing rapidly. International affiliates account for a fast-growing segment of production in economies that open up and welcome foreign investment. In Argentina, for instance, after the reforms of the early 1990s, multinationals went from 43% to almost 70% of the industrial production of the 200 largest firms. This phenomenon has created serious concerns over the role of smaller economic firms, of national businessmen and over th
A. optimistic
B. objective
C. pessimistic
D. biased
[判断题]运行中的电流互感器的二次回路不得开路。( )
A.正确
B.错误
[单项选择](79)The Olympic Games are held every four years in a different city in the world. Athletes from many countries compete in a variety of sports which are divided into winter and summer games.
The Olympics began in Greece more than 2,700 years ago. The games were originally part of a religious festival in honour of the Greek Gods. Eventually, the games became the most important festival in all of Greece.
The first recorded Olympic competition was held in 776 B. C. It was held in an outdoor stadium which was about 200 metres long and 30 metres wide. The stadium was in a valley and about forty thousand people watched the event. The first thirteen Olympics consisted of only one race - running.
Since 776 B. C. the games had been held regularly for about 1,200 years. In the year 397 the Olympics were prohibited by the Roman Emperor.
(80) It was not until 1896 that the first Olympics of modern times were held in Athens. From then on the games are held
A. They are the world’s most important athletic events and mark the friendship among people of the world.
B. They not only provide exciting sporting events but also make great contributions to world peace.
C. They allow people of the world to enjoy most important athletic events and bring great economic benefit to the host sponsor country.
D. They offer best sporting events and promote cooperation between countries.
[单项选择]女婴,10个月。体重10kg,头围45cm,方颅,前囟1.5cm,平坦,今晨突然抽搐一次,持续1~2min缓解。当时测体温38.5℃,抽搐后即入睡。醒后活动如常。查血钙1.75mmol/L(7mg/dl),血磷 45mmol/L(4.5mg/dl)。最可能的惊厥原因是
A. 脑积水、脑发育不良
B. 低血糖症发作
C. 癫痫
D. 低钙惊厥
E. 高热惊厥
[单选题]( )安全文明生产的第一责任人。
A.现场施工人员
B.项目总监/项目经理
C.施工方现场经理
D.各专业工程师
[单项选择]The discovery of the halftone process in photography in 1881 made it ______ photographs in books and newspapers.
A. the possible reproduction
B. the possibility of reproducing
C. possible to reproduce
D. possibly reproduced
[不定项选择题]患者男性,24岁,右下后牙区胀痛进食吞咽时加重4天,1天前出现局部自发性跳痛,张口受限。查右面颊部、下颌角区轻度肿胀,张口度二指,垂直低位阻生,表面牙龈红肿,新形成的龈袋内溢胀,咽侧壁稍充血、无明显压痛
如下颌角区呈凹陷性水肿,压痛明显,怀疑形成咬肌间隙脓肿,确诊的方法是
A.CT检查
B.触诊有否波动感
C.下颌升支正侧位X线片
D.粗针头穿刺
E.血细胞分析
[单项选择]9岁男孩。午餐时突发神志丧失,手中持碗失落,碗打碎后即醒。脑电图示3周/秒棘慢波规律性和对称性发放。最可能的诊断是
A. 复杂部分发作
B. 部分性发作
C. 杰克逊癫痫
D. 失神发作
E. 不能分类的癫痫发作