热门试题:
[单项选择]中国体育代表队中为中国赢得奥运奖牌最多的是。()
A. 乒乓球队
B. 体操队
C. 跳水队
[多选题]25Hz相敏轨道电路接收端防雷补偿器中的电容可以使用( )型号。
A.CTA
B.CTB
C.CTZA
D.CTZB
[单项选择]
Telecommunications allows people around the World to contact one another, to access information instantly, and to communicate from remote areas. Telecommunications usually involves a sender of information and one or more recipients(收件人) linked by a technology, such as a telephone system, that transmits information from one place to another. Telecommunications devices convert different types of information, such as sound and video, into electronic signals. The signals can then be transmitted by means of media such as telephone wires or radio waves. When a signal reaches its destination, the device on the receiving end converts the electronic signal back into an understandable message, such as sound over a telephone, moving images on a television, or words and pictures on a computer screen. Telecommunications enables people to send and receive personal messages across town, between countries, and to and from outer space. It also provides the key medium for news, data, information&r
A. point-to-point
B. point-to-multipoint
C. multipoint-to-point
D. multipoint-to-multipoint
[单选题]摄影机(或照相机)在被摄对象正侧面 90 度位置进行拍摄的角度是 。
A.正面角度
B.背面角度
C.侧面角度
D.斜侧面角度
[多选题]高压电缆旁路作业,旁路电缆终端与环网柜(分支箱)连接前应进行外观检查,绝缘部件表面应( ),并确认环网柜(分支箱)柜体可靠接地。
A.清洁
B.干燥
C.无绝缘缺陷
D.光滑
[判断题]钢管的自重和其内部的水重均会对钢管产生轴向分力。
[单选题]经济舱热点汉堡烘烤时间:( )
A. 先中温15再低温10
B. 先低温10再中温15
C. 先中温10再低温10
D. 先低温10再中温10
[单选题] 要坚持( )相结合,既要严格管理干部,又要对干部在政治上激励、工作上支持、待遇上保障、身体上关心。
A.管理和教育
B.严管和厚爱
C.关心和帮助
D.监督和管理
[判断题]无损探伤主要检测被检对象的宏观缺陷。( )
A.正确
B.错误
[多选题] 高频机较工频机相比,有以下哪些优点( )。
A.体积小重量轻
B.输入功率因数高
C.输入谐波分量小
D.可有效屏蔽电网侧的扰动可能对负载造成干扰
[单选题]熔化焊时,机械危险大量表现为人员与()的接触伤害。
A.静止物件
B.短路物件
C.可运动件
[单选题]称取砂试样 200g 测定泥块含量,试验后干燥试样分别为 196g,193g,求砂的泥块含量( )。
A.2.75%
B.2.8%
C.试验无效
D.2.7%
[单选题]肝气郁结胁痛的主症之一是( )
A.胁肋胀痛,游走不定
B.胁肋刺痛,痛有定处
C.胁肋隐痛,其痛不休
D.胁痛口苦,脘腹痞闷
E.小便淋漓不尽
[判断题]横越线路时,应一站、二看、三通过,注意左右机车、车辆的动态及脚下有无障碍物。
A.正确
B.错误
[判断题]绝缘接头的绝缘阻值不足一般不会导致轨道电路的短路故障。( )
A.正确
B.错误
[单项选择]
A. He hasn’t taken part in a debate this year.
B. He believes the team was eliminated already.
C. He doesn’t know if the team was successful.
D. He is too busy to go to the competition with the woman.
[单项选择]日处理能力在10万m3以上的污水二级处理设施产生的污泥,宜采取( )处理工艺。
A. 厌氧消化工艺
B. 堆肥处理
C. 综合利用
D. 好氧消化技术
[判断题].列车受电弓的位置信息在DDU上能显示。 ( )
A.正确
B.错误
[单项选择]给水泵出口压力下降应联系锅炉调节给水流量,若勺管位置开至最大,给水压力影响锅炉给水流量时,应()。
A. 联系检修入员
B. 紧急停机
C. 紧急停泵
D. 启动备用泵
[填空题]George was very (help) ______, we could not do the job without him.
[单选题] 河道砂石资源开采权出让成交并签订成交合同( ),出让承办方(水行政管理部门)应当将交易合同副本传递给具有税收管辖权的税务部门。
A. 当日
B. 次日
C. 三日内
D. 5日内
[判断题]新建或改建有砟桥上护轨应采用与基本轨同类型钢轨。
A.正确
B.错误
[单项选择]Nearly all surgical stunts stick themselves with needles and (62) instruments while in training. But (63) fail to report the injuries, (64) their health and that of their families and patients to the threat of (65) disease, according to a survey by Dr. Makary and colleagues being published today. Their being (66) was the chief reason the surgical residents (67) for the injuries, which were mostly (68) .
The survey revealed that young surgeons didn’t report the potentially fatal injuries for a range of reasons. (69) a time surgeons feel that doing so would take too much time, could (70) career opportunities and might cause a loss of face among (71) . In addition, there was a (72) belief that getting even timely medical attention would not prevent infection.
"It’s been long (73) , but no one truly appreciated the (74) of the problem," said Martin Makary. "Every surgeon is (75) to
[单选题]水标尺的起点须与国家水准基点高程相对应,标出( )和发生时间
A.A.设计水位
B.B.最低水位
C.C.历史最高洪水位
D.D.一般洪水位
[单选题]运梁车与架桥机对位时,两侧应设( ),避免运梁车擦挂或碰撞架桥机。
A.警示标志
B.警戒线
C.专人监护
[单项选择] 配合供电线路停电或申请供电线路停电时的停送电联系,应按以下规定执行: a)供电线路停电后,电力用户的()联系人,应与供电部门值班调度员联系,经同意后,方可在电源侧进行验电,当验明供电线路确无电压后方可装设接地线; b)电源侧接地线装设完成后,应即向供电部门值班调度员汇报,经同意后方可进行工作; c)工作完成;人员撤离现场;接地线拆除后,应即向供电部门值班调度员汇报“工作结束;接地线已拆除”; d)电力用户停送电联系人,一经向供电部门值班调度员汇报“工作结束;接地线已拆除”后,()再在供电线路电源侧上工作。
A. 停送电;严禁
B. 工作;严禁
C. 动力部门;可以
[单项选择]If a consumer wants a quick settlement of his problem, it's better to complain to ________.
A. a shop assistant
B. the store manager
C. the manufacturer
D. a public organization
[判断题]电气设备在运行过程中,电火花或电弧是引起火灾和爆炸的直接原因。( )
A.正确
B.错误
[单选题]电绝缘手套最高测试电压为( )伏。
A.500
B.5000
C.10000
D.20000
[简答题]简述制氢PSA在8-2-4工作状态的步骤?
[判断题]GIS特高频信号经过连续绝缘盆传播,在第一个绝缘盆上的衰减要比其他盆式绝缘子高
A.正确
B.错误
[单选题]分布于胃底的动脉是( )
A.胃左动脉
B.胃右动脉
C.胃短动脉
D.胃网膜左动脉
[单项选择]在下列网络的传输介质中,抗干扰能力最好的一个是
A. 光缆
B. 同轴电缆
C. 双绞线
D. 电话线
[单选题]作业人员()进入有限空间作业时均应进行准入检测。
A.当日第一次
B.每次
C.定期
D.
E.略
F.略
[多选题]AU是由( )构成。
A.低阶VC
B.净负荷
C.高阶VC
D.管理单元指针AU-PTR
[单选题]连续式机车信号机显示( ):表示列车已越过地面上显示红色灯光的信号机。(技规)
A.一个黄色灯光
B.一个半黄半红色灯光
C.一个红色灯光
D.略
E.略
[单项选择]腰背肌筋膜炎病因中,"肌肉变态反应"属于()
A. 损伤
B. 寒冷
C. 潮湿
D. 风湿症
E. 慢性劳损
[判断题]柜员办理存、取款有折业务必须刷折读磁核对账号,存取款时必须做到账折、单见面(无折续存、代收代付业务除外),严禁无单(折)取款。