热门试题:
[单项选择]金属机柜（架）采用不小于（）mm2多股铜导线与本机柜（架）下的等电位铜排栓接。
A. 1
B. 2
C. 5
D. 10
[判断题]中性点不接地变压器三相绕组中无零序电流流过，所以其中性点的零序电压一定为零。
[单选题]《河北省煤矿防治水管理办法》规定,矿井必须严格执行探放水通知单制度,探放水通知单应由( )填写,内容主要包括探水要求、停止采掘作业位置、水害情况的简要说明及相关图件。
A. 地测部门负责人
B. 地测防治水副总工程师
C. 防治水技术人员
[填空题] Grace （3） sa mère, Sylvie a pu achever sa formation universitaire.
[单项选择]Another thing an astronaut has to learn about is eating in space. Food is weightless, just as men are.
Food for space has to be packed in special ways. Some of it goes into tubes that a man can squeeze into his mouth. Bite-sized cookies are packed in plastic.
There is a good reason for covering each bite. The plastic keeps pieces of food from travelling in the spaceship. On the earth very small pieces of food would simply fall to the floor. But gravity doesn’ t pull them to the floor when they are out of the plastic in a spaceship. (78) They move here and there and can get into a man’ s eyes or into the spaceship’ s instruments. If any of the instruments is blocked, the astronauts may have trouble getting safely home.
As astronauts travel on longer space trips, he must take time to sleep. An astronaut can fit himself to his seat with a kind of seat belt. Or, if he wants to, he can sleep in a sleeping bag which is fixed in place under his seat. But be careful he mu
A. Because he thinks it is comfortable to sleep in that way in space.
B. Because he doesn’t want to touch any controls when he sleeps.
C. Because the instruments of the spaceship are easily broken.
D. Because he is afraid that the seat will mov
[单选题]限高防护架要涂刷醒目的黄黑相间警示条纹，条纹间距为( )mm。
A.50
B.100
C.150
D.200
[单选题]机器人的手部也称末端执行器，它是装在机器人的（ ）部上，直接抓握工作或执行作业的部件。
A.A.臂
B.B.腕
C.C.手
D.D.关节
[单选题]( )主要用于将变压器内部绕组的高、低压引线与电力系统或用电设备进行电气连接,并保证引线对地绝缘。
A.连杆;
B.导杆;
C.瓷套;
D.套管。
[单选题]国家鼓励和支持研制、开发、推广、应用有利于职业病防治和保护劳动者健康的新技术、新工艺、新设备、( )。
A.新产品
B.新方法
C.新材料
[单选题]市场上沪深300指数报价为4951．34，IF1512的报价为5047．8。某交易者认为相对于指数报价，IF1512报价偏低，因而卖空沪深300指数基金，同时买入同样规模的IF1512，以期一段时间后反向交易盈利，这种行为是（ ）。
A.买入套期保值
B.跨期套利
C.反向套利
D.正向套利
[单选题]智能控制柜应具备温度湿度调节功能，柜内最低温度应保持在+5℃以上，柜内最高温度不超过柜外环境最高温度或()℃（当柜外环境最高温度超过50℃时）。
A.30
B.35
C.40
D.50
E./
F./
G./
H./
[单选题]进站、接车进路信号机和自动闭塞区间并置的通过信号机处.钢轨绝缘可装在信号机前方或后方各( )的范围内.
A.0.6m
B.0.8m
C.1m
D.1.2m
[单项选择]能明显降低血浆甘油三酯的药物是（）
A. 洛伐他汀
B. 考来烯胺
C. 氟伐他汀
D. 抗氧化剂
E. 以上都不是
[判断题]关于正线短时间进行抢修的规定,维修调度与行车调度员协商运送抢修人员的列车车次后,通知抢修人员,行车调度员通知相关车站和司机。(1.0 分)
A.正确
B.错误
[多选题]电话闭塞法启用条件
A.A、两个及以上设备集中站范围全部计轴区段故障
B. B、一个及以上设备集中站信号设备故障，且ATS无法监控列车运行相对位置时
C. C、反向行车时，不具备反向进路条件的
D. D、整侧屏蔽门故障且未修复
[单选题]测量误差按其性质可分为（ ）和系统误差。
A.偶然误差
B.中误差
C.粗差
D.平均误差
[判断题]幼儿很容易受到自己的情绪影响，但不能够自我调节。
A.正确
B.错误
[单选题]直流母线的负极相色漆规定为( )。
A.蓝色
B.黑色
C.白色
D.红色
[单选题]一工人上班骑自行车不慎跌倒,右颞部着地,当时昏迷达20分钟,醒后轻微头痛,四肢活动自如,次日感头痛加重,呕吐数次,伴嗜睡,来院就诊。首选何种检查( )
A.头颅CT
B.头颅MRI
C.脑血管造影
D.脑池造影
E.腰穿检查
[填空题]列车救援清客时与行调、值班站长保持联系| 应做好广播宣传| 并及时做好相关时间与资料记录| 包括:()__、()__、乘客投诉。(1.0 分)
[单项选择]
架构权衡分析方法(Architecture Tradeoff Analysis Method，ATAM)是一种系统架构评估方法，主要在系统开发之前，针对性能、（）、安全性和可修改性等质量属性进行评价和折中。ATAM可以分为4个主要的活动阶段，包括需求收集、（）描述、属性模型构造和分析、架构决策与折中，整个评估过程强调以（）作为架构评估的核心概念。 某软件公司采用ATAM进行软件架构评估，在评估过程中识别出了多个关于质量属性的描述。其中，“系统在进行文件保存操作时，应该与Windows系统的操作方式保持一致”主要与（）质量属性相关；“系统应该提供一个开放的API接口，支持远程对系统的行为进行控制与调试”主要与（）质量属性相关。在识别出上述描述后，通常采用（）对质量属性的描述进行刻画与排序。在评估过程中，（）是一个会影响多个质量属性的架构设计决策。
在评估过程中，（）是一个会影响多个质量属性的架构设计决策。
A. 风险点
B. 决策点
C. 权衡点
D. 敏感点
[单选题]正线发生相邻的2个以上车门同时发生无法打开/关闭故障，重新开关门无效后，（）清客退出服务
A.本站
B.下一站
C.长岭陂站
D.终点站
[单选题]下列导体色标,表示接地线的颜色是( )。
A. 黄色
B. 绿色
C. 淡蓝
D. 绿/黄双色
[单选题]降压启动是指启动时降低加在电动机( )绕组上的电压,启动运转后,再使其电压恢复到额定电压正常运行。
A.转子
B.定子
C.定子及转子
[单项选择]持续时间长、强度小的各种劳动供能主要是由人体的（）系统提供。
A. ATP-CP
B. 乳酸能
C. 有氧氧化
[单项选择]
W: Good evening and welcome to tonight’s program. Our guest is Dr. Charles Adams, who has sparked a great deal of attention over the past several years for his research in the area of language learning. His new book, Learning a Language over Eggs and Toast, has been on the best seller list for the past six weeks. Welcome to our program.
M: It’s a pleasure to be here.
W: Now, Dr. Adams. Tell us about the title of your book, Learning a Language over Eggs and Toast.
M: Well, one of the most important keys to learning another language is to establish a regular study program, like planning a few minutes every morning around breakfast time.
W: Now, sorry for saying this, but your ideas may sound a little simplistic to our viewers. I mean I took Spanish in high school for four years, and I didn’t become a proficient speaker of the language.
M: Well, I think there are many people that feel that way, and that’s just it. I&rsq
A. Following classroom instructions.
B. Watching plenty of movies online.
C. Breaking down cultural barriers.
D. Backpacking around the world.
[多选题]列车发生火灾、爆炸时须立即停车，停车地点应尽量避开( )。 (技规)
A.较大桥梁
B.特大桥梁
C.较大隧道
D.长大隧道
E.长大坡道
F.选择便于旅客疏散的地点
[单项选择]
请根据短文内容为每处空白确定1个最佳选项。
Gun Rights in the US
Immediately after the shooting at Virginia Tech University, Americans gathered to mourn (致哀) the dead. The president and the state governor both hurried there to share the (1). But the majority of Americans still cling to their right to (2) weapons.
Strictly speaking, the US is not the only country (3) gun violence has destroyed lives, families and communities in everyday circumstance. But the US is one of the (4) countries that seem unwilling and politically incapable of doing anything serious to stop it.
In countries like Britain and Canada, the government adopted stricter (5) control soon after serious gun violence incidents. US leaders, however, are held (6) by the gun lobby (院外活动集团) and the electoral (选举) system.
The powerful National Rifle Association, the major supporter of gun (7) in the US, is too strong for any party to take on. Most Republicans oppose gun control anyw
A. hide
B. buy
C. keep
D. sell
[单选题]上饶银行客户统一授信管理暂行办法(2021年修订版)中,对于( )(不含)以下统一授信方案由分支行按照本办法规定自主审批
A.500
B.1000
C.3000
D.5000
[单选题]三显示自动闭塞区段的发车进路色灯信号机显示一个（ ）灯光，准许列车运行到次一架信号机之前准备停车。
A.月白色
B.黄色
C. 绿色
[单选题] 以下设备中,使多个图像信号分割显示于同一监视器上的是( )。
A.控制器
B.画面分割器
C.视频服务器
D.录像机
[单选题]根据《山东省消防条例》，修建道路以及停电、停水、切断通信线路等可能影响灭火救援的，有关单位必须提前（ ）小时通知当地消防救援机构。
A.六
B.八
C.十二
D.二十四
[判断题]全站停电可不使用工作票。
A.正确
B.错误
[单选题]喷油器出现漏油或雾化不良,将使柴油机( )状态劣化。
A.准备燃烧
B.主燃烧
C. 过后燃烧
D.迅速燃烧
