热门试题:
[判断题]埋弧焊时焊剂堆积高度一般在2.5~3.5mm范围比较合适。()
[单选题]被监视居住的犯罪嫌疑人未经允许不得离开( )
A. 犯罪嫌疑人的住处或居所
B. 犯罪嫌疑人居住的市
C. 公安机关指定的地区
D. 犯罪嫌疑人居住的镇
[多项选择]下列哪些是世界贸易组织的机构( )。
A. 部长级会议
B. 贸易政策制定机构
C. 争端解决机构
D. 贸易政策审议机构
E. 总理事会
[单项选择]Ⅰ型超敏反应常用的皮肤试验是()。
A. 挑刺试验
B. 斑贴试验
C. PPD试验
D. SK-SD皮肤试验
E. OT试验
[单选题]011 5 2 2
( )不能防止线路爬行。
A.增加轨撑
B.拧紧螺栓
C.夯实道床
D.安装防爬设备
[判断题]经过无人看管道岔必须事先确认道岔开通位置是否正确。
A.正确
B.错误
[判断题]机舱内应配备逃生装置并定期检查()
A.正确
B.错误
[判断题]002323柴油机活塞环磨损过多,会造成排气冒蓝烟。
A.正确
B.错误
[单选题]根据《中国银监会最高人民检察院公安部国家安全部关于印发银行业金融机构协助人民检察院公安机关国家安全机关查询冻结工作规定的通知》(银监发〔2014〕53号)规定,冻结涉案存款、汇款等财产的期限不得超过六个月,对于重大、复杂案件,经设区的市一级以上人民检察院、公安机关、国家安全机关负责人批准,冻结涉案存款、汇款等财产的期限可以为____。
A.三个月
B.六个月
C.九个月
D.一年
[单项选择]进行电焊、气焊等具有火灾危险作业的操作人员必须()
A. 年满16周岁
B. 具有相应学历
C. 持证上岗
D. 无妨碍从事本工种的疾病
[多选题]AE003 HSE管理体系具有一切事故都可以( )的思想,( )的观点,层层负责制的管理模式,程序化、规范化的科学管理方法;事前识别控制险情的原理。
A.预防
B.领导承诺
C.全员参与
D.加强控制
[单选题]白色的爆炸帽“SQUIB”灯何时燃亮?
A.发动机火警按钮按压释放后
B.发动机火警按钮按压释放后,按压相应的AGENT按钮
C.当探测到火情后,自动燃亮
D.当灭火瓶失去压力时燃亮
[单选题]不准在( )上、车底下、枕木头、道心里坐卧或站立。
A. 岔尖
B. 钢轨
C.线路
D.路基
[多项选择]M2PA支持().
A. 信令链路定位
B. 错误修正
C. 流量控制
D. 传送优先级
[单项选择]The fund is for ______ distress among the flood victims in the southern city.
A. releasing
B. detracting
C. relieving
D. devolving
[填空题]在工具式脚手架使用期间,不得拆除下列杆件:架体上的杆件、与建筑物连接的各类杆件、边墙件、()等
[单选题]()属客运收入。
A.违章携带品补收运费
B.装卸费
C.建设基金
D.代收款
[多选题]运安系统作用良好时,全员分别将IC卡插入读卡器进行验卡,司机手动输入工号、( ),设备提示“验卡正确通过,可控揭示××条”,验卡完毕取出IC卡。
A.区段号
B.车站号
C.车次车种
D.本务(补)机
E.客(货)类别
F.速度等级
[单选题]高锰钢整铸辙叉,辙叉心纵向水平裂纹,两侧裂纹贯通(指贯通长度)超过50mm,判( )。
A.轻伤
B.重伤
C.轻伤有发展
D.折断
[单选题]在运输繁忙地段发生列车重大颠覆事故,采取( )能迅速开通。‘
A.拉翻法
B.便线开通法
C.移车法
[单项选择]在下列关于宏和模块的叙述中,正确的是______。
A. 模块是能够被程序调用的函数
B. 通过定义宏可以选择或更新数据
C. 宏或模块都不能是窗体或报表上的事件代码
D. 宏可以是独立的数据库对象,可以提供独立的操作动作
[单选题]1.206.第206题公用电流互感器二次绕组二次回路只允许且必须在()一点接地。
A.相关保护柜屏内
B.开关场
C.等电位接地网
D.厂、站主地网
[单项选择]在各种散热器中,具有耐腐蚀、散热好和价格便宜的散热器是()。
A. 钢排管散热器
B. 钢串片散热器
C. 铝合金散热器
D. 铸铁760四柱散热器
[单选题]持线路或电缆工作票进入变电站或发电厂升压站进行架空线路、电缆等工作,应增填工作票份数,由变电站或发电厂( )许可,并留存。
A.技术人员
B.值班人员
C.工作许可人
D.安全人员
[判断题]低压电流互感器的二次回路不允许接地。
A.正确
B.错误
[单选题]高处作业,除有关人员外,他人不得在工作地点的下面通行或逗留,工作地点下面应( )。
A. 有遮栏(围栏)或装设其他保护装置
B.有遮栏
C.有围栏
D.装设其他保护装置
[单选题]下列关于SQL Server数据库分离和附加的说法,正确的是
A.分离出来的数据库文件有mdf文件和ldf文件
B.分离出来的数据库文件只有mdf文件
C.分离出来的数据库文件只有ldf文件
D.不能对分离出来的数据库文件进行重命名,否则附加不成功
[单选题]MUX VLAN 提供了一种通过VLAN进行网络资源控制的机制,以下概念中不属于MUX VLAN的是:
A. 主VLAN
B. 从VLAN
C. Guest VLAN
D. 互通型 VLAN
[判断题]在路口遇有交通信号灯和交通警察指挥不一致时,按照交通信号灯通行。
A.正确
B.错误
[单项选择]13A型车钩钩舌内侧面和正面磨耗剩余厚度检测应在距钩舌上下()mm处为准。
A. 40
B. 70
C. 50
D. 60
[单项选择]烧伤后常并发()
A. 消化性溃疡
B. Curling溃疡
C. 出血性胃炎
D. Cushing溃疡
E. 糜烂性胃炎
[单项选择]If you are a tourist interested in seeing a baseball game while in New York, you can find out which of its teams are in town simply by sending a message to AskForCents.com. In a few minutes, the answer comes back, apparently supplied by a machine, but actually composed by a human. Using humans to process information in a machine-like way is not new: it was pioneered by the Mechanical Turk, a famed 18th-century chess-playing machine that was operated by a hidden chessmaster. But while computers have since surpassed the human brain at chess, many tasks still baffle even the most powerful electronic brain.
For instance, computers can find you a baseball schedule, but they cannot tell you directly if the Yankees are in town. Nor can they tell you whether sitting in the bleachers is a good idea on a first date. AskForCents can, because its answers come from people. "Whatever question you can come up with, there’s a person that can provide the answer—you don’t have the inflexibility of
A. show the extensive influence of Turk on the commercial world.
B. substantiate endeavors to apply human intelligence to computer analysis.
C. show the strength of collective brainpower of computer game players.
D. substantiate people’s abilities of sorting photographs while playing games.
[多选题]被许可人需要延续依法取得的行政许可的有效期的,行政机关应当()。
A.根据申请,在该行政许可有效期届满前作出是否准予延续的决定
B.根据申请,在该行政许可有效期届满三十日前作出是否准予延续的决定
C.行政机关逾期未作决定的,视为准予延续
D.行政机关逾期未作决定的,视为不准延续
[判断题]墙的面层厚度必须大于 0( )
A.正确
B.错误
[单项选择]
Text 1
You might be forgiven for thinking that sleep researchers are a dozy bunch. Most of the other things people do regularly -- eat, excrete, copulate and so on -- are biologically fairly straightforward: there is little mystery about how or why they are done. Sleep, on the other hand, which takes up more of most people’ s time than all of the above, .and which attracts plenty of study, is still fundamentally a mystery.
The one view shared by all is that sleep matters. For evidence, look no further than the experiments led by Allan Rechtaschaffen and Bernard Bergmann at the University of Chicago in the 1980s. They kept experimental rats awake around the clock in an environment where control rats were allowed as much sleep as’ they wanted. The sleep - deprived rats all died within a month.
Carol Everson worked with the Chicago team as a graduate student and now has a job at the National Institutes of Health in Bethesda, Maryland. While
A. couldn' t prove that sleep matters
B. allowed the control rats as much sleep as possible
C. showed that sleep is still fundamentally mystery
D. kept the experimental rats up all day and all night