热门试题:
[单选题]主含挥发油,油中主成分为醋酸龙脑酯的药材是
A.小茴香
B.砂仁
C.苦杏仁
D.决明子
E.马钱子
[单选题]轴的主要功能是()。
A.支承转动件
B.传递运动
C.传递动力
D.以上都是
[判断题]实验室出具虚假结论或者出具的结论严重失实,自我纠正后可以继续使用资质认定标识。
[多项选择]以下哪些是细菌性痢疾的临床特点()
A. 人群普遍易感,3~4月份达高峰
B. 潜伏期为数周至数月
C. 腹痛以左下腹为重,腹泻次数多
D. 排暗红色果酱样大便
E. 肠粘膜弥漫充血、水肿、浅表溃疡
[单选题]由上下工序流程不均衡,部门协作不同步等原因造成的浪费属于()的浪费。
A.运输
B.等待
C.动作
[单项选择]英译汉:“certificate of cleanliness;certificate of damage;certificate of shortage”,正确的翻译为( )。
A. 清洁证书;验残证书;短缺证书
B. 短缺证书;验残证书;清洁证书
C. 清洁证书;短缺证书;验残证书
D. 验残证书;短缺证书;清洁证书
[单选题]YN,d11变压器,三角形侧ab两相短路,星形侧装设两相三继电器过流保护,设ZL和ZK为二次电缆(包括TA二次漏阻抗)和过流继电器的阻抗,则电流互感器二次负载阻抗为( )。
A.ZL+Zk
B.2(ZL+Zk)
C.3(ZL+Zk)
D. (ZL+Zk)
[单项选择]某企业员工与企业管理者在集体协商过程中发生争议,且通过内部协商后双方无法就劳动合同达成共识。根据相关规定,当事人一方或双方可以书面向()提出协调处理申请。
A. 工会
B. 劳动保障行政部门
C. 街道办事处
D. 劳动局
[单选题]智能变电站系统中,远动装置采用( )方式与装置通讯。
A.单实例
B.多实例
C.单实例或多实例
D.单实例和多实例同时
[多选题]停留站,餐售班组未使用完的( )( )( )食品要冷藏存储
A.生肉类
B.大米
C.水产类
D.禽肉类
[判断题]有自燃发火危险的矿井,必须定期检查CO2浓度、气体温度等的变化情况。
A.正确
B.错误
[单选题]如果计算机字长是8位,那么-25的补码表示为( )。
A.00011001
B.11100111
C.10100101
D.00100101
[单选题]跨区域行车,应每间隔( )小时停车休息。
A.0.5
B.1
C.1.5
D.2
[判断题]变压器投切时会产生大气过电压。( )
A.正确
B.错误
[单项选择]The 213.115.77.0 network was subnetted using a /28 subnet mask. How many usable subnets and host addresses per subnet were created as a result of this?()
A. 2 networks with 62 hosts
B. 6 networks with 30 hosts
C. 16 networks and 16 hosts
D. 62 networks and 2 hosts
E. 14 networks and 14 hosts
F. None of the above
[单选题]有计划的使用绿色许可证操纵时,在列车运行至使用绿色许可证发车站的进站信号机、出站信号机或接发车进路信号机前,运行速度低于45km/h时,显示屏自动弹出“绿色许可证输入”窗口,提示司机输入“绿色许可证号”;若司机未输入,提示窗口消失后,持续按压【↑】键2秒,显示屏显示“非正常行车确认”窗口,司机将光标移动到“绿色许可证”选项处,按压【确认】键,全员确认行车凭证正确后,输入“( )”并确认,再次按压【确认】键“绿色许可证输入”窗口消失。(监控手册)
A.调度命令号
B.绿色许可证号
C.电话记录号
[判断题]《山东省农村信用社融资性担保公司担保贷款管理办法》中规定,法人机构对的融资性担保机的保证金实行专户管理,不可办理质押。( )
A.正确
B.错误
[单项选择]组成人体运动系统的主要有
A. 血管、肌肉、关节
B. 血管、肌肉、骨骼
C. 血管、骨骼、关节
D. 骨骼、肌肉、关节
E. 骨骼、肌肉、韧带
[单项选择] 第一篇Motoring Technology
1.2 million road deaths worldwide occur each year,plus a further 50 million injuries.To reduce car crash rate,much research now is focused on safety and new fuels-though some electric vehicle and biofuel research aims at going faster.
Travelling at speed has always been dangerous.One advanced area of research in motoring safety is the use of digital in-car assistants.They can ensure you don’t miss important road signs or fall asleep.Most crashes result from human and not mechanical faults.
Some safety developments aim to improve your vision.Radar can spot obstacles in fog,while other technology“sees through”big vehicles blocking your view.
And improvements to seat belts,pedal(脚踏)controls and tyres are making driving smoother and safer.The colour of a car has been found to be linked with safety,as have,less surprisingly,size and shape.
But whatever is in the fuel tank,you don’t want a thief in the driving seat and there have been many innovat
A. design fully automatic cars.
B. develop faster electric vehicles.
C. analyze road deaths occurring worldwide each year.
D. improve the safety of cars and develop new fuels.
[判断题]浮艇泵启动后,在陆地上运转不得超过1分钟。
A.正确
B.错误
[多选题]ZXG 焊机外壳漏电原因( )。
A.电源线碰焊机外壳
B.电抗器、风扇及控制回路的线路碰机壳
C.接地、接零不良
D.焊机外壳破损
[单选题]钢的密度系数是( )。[321030202]
A.7.7
B.7.78
C.7.85
D.8.15
[判断题] ( )转子流量计的转子玷污后对精度影响不大。
A.正确
B.错误
[单项选择]在经过()封装的数据分组的外层包头中包含了PDSN或PCF的IP地址。
A. L2TP
B. GRE
C. IPsec
D. IP
[多选题]城域数据网设备布置原则( )
A.人机分离
B.线路最短
C.布局紧凑
D.规格统一
[单选题] 视频监控中用于表征画面流畅度的指标是( )
A. 场频
B. 帧率
C. 码率
D. 时延
[判断题]【配电安规】不填用工作票的低压电气工作必须双人进行。( )
A.正确
B.错误
[单项选择]无灌溉条件的旱作区,在采取保持土壤水分措施的前提下,施氮素要()。
A. 充足
B. 减少1/3
C. 减少1/4
D. 增加1/3
[单项选择]下面不属于社会工作实务中评估目的的是()。
A. 考察社会工作者工作能力
B. 考察社会工作介入效果
C. 总结工作经验、改善工作的方法和技巧,提升服务水平
D. 验证社会工作方法的有效性
[单项选择]
Surprisingly, there is a relationship between sea salt and the making of rain drops. Most of the water droplets that make up clouds are formed around small, solid particles. In order to fall as rain, the cloud droplets have to increase in size. Clouds from which rain does not fall have droplets that are fairly uniform in size. Clouds that produce rain have some droplets that are much larger than others.
The production of rain depends on the presence of the large droplets that grow in size by coalescence (a fusing together). There is evidence to support the theory that a particle of sea salt serves as the nucleus (核,核心) or center, around which the larger droplets form. Most of the sea salt probably enters the atmosphere from, bubbles that form on the surface of the sea. When the bubbles break, a tiny, even microscopic, droplet of salt water is cast into the air. Once in the atmosphere, the microscopic piece of salt collects water vapor from the air. The water vapor then co
A. Minute.
B. Massive.
C. Middle.
D. Attractive.
[单选题]以下哪项不是对记录的基本要求()。
A.干净
B.真实
C.完整
D.有效
[判断题]电气化区段信号人员作业时,必须按规定使用耐高压的绝缘防护用品。
A.正确
B.错误
[单选题]吸入氧浓度为33%,每分钟的氧流量是( )
A.3L
B.4L
C.5L
D.6L
E.7L
[单选题]()按钮是二位非自复示按钮。
A.ZDA
B.BZA
C.SA
D.JCA
[单选题]某平台生活区105室卫生间烟雾探头被触发报警,平台总监和电器师赶到现场发现电热水器冒出浓烟并有明火,外罩落在两米远的地板上,热水器控制系统着火。两人确定灭火器电源关闭后,迅速扑灭现场。下列烟雾探头的缩写正确的是()。
A.
B.
C.S
D.
E.
F.UV
G.H
[单项选择]下列哪项不是白血病发病的原因
A. 放射
B. 免疫功能亢进
C. 化学因素
D. 病毒感染
E. 遗传因素