热门试题:
[单选题]当列车运行至车载数据中已预先设置为“一离去发码特殊信号机”或“场间无码特殊信号机”的信号机前,机车信号显示为白灯,运行速度低于( )km/h时显示屏自动弹出解锁方式提示栏,司机确认地面信号为开放信号后,允许按压( )键进行解锁操作,解除监控装置停车控制,监控列车以不超过固定模式限速值越过该信号机。(监控手册)
A.60、【解锁】+【确认】
B.45、【解锁】+【确认】
C.45、【解锁】
D.略
E.略
[单选题]中断供电将造成人身死亡产品大量报废主要设备损坏以及企业的生产不能很快恢复中断供电将造成重大( )影响的用电负荷属于一类负荷。
A.市场
B.社会
C.质量
D.政治
[判断题]行政机关实施行政处罚时,应当责令当事人改正或者限期改正违法行为()
A.正确
B.错误
[单项选择]
女,25岁。双手关节肿胀、疼痛2个月,发热伴胸痛1周,查体:见口腔溃疡。血常规:WBC2.11×109/L,Hb90g/L,Ph65×109/L;尿蛋白(++),RBC(++);胸片X线示双侧少量胸腔积液,最可能的诊断是:()。
A. 再生障碍性贫血
B. 肾小球肾炎
C. 结核性胸膜炎
D. 系统性红斑狼疮
E. 类风湿关节炎
[单选题]阅读一份《标准》,需要了解标准文本的一般结构。通常文本的三类构成要素不包括( )。
A. 概述要素
B. 规范要素
C. 补充要素
D. 附录要素
[单选题]JD-1A型微机联锁系统,在控制台上对应每一台上下位机均有一对表示灯表示该机的联机状态,仅有左侧的一个灯点亮表示该机处于( )。
A.主用状态
B.热备状态
C.脱机
D.死机
[单选题]依据《10kV及以下业扩受电工程技术导则》(2018版)低压电缆的芯数根据低压配电系统的接地型式确定TN-S 系统采用( )电缆
A.单芯
B.三芯
C.四芯
D.五芯
[单选题]低压电气工作时,拆开的引线、断开的线头应采取()等遮蔽措施。
A.胶带包裹
B.绝缘包裹
C.帆布遮盖
D.剪断包裹
[简答题]TD—LTE是否从TD—SCDMA平滑升级?
[单选题]当泵入口压力过低时,会造成泵的入口发生汽化。
A.正确
B.错误
[单选题]列车机车与动车组过渡车钩的连结与摘解、软管摘结、电气连接线的连结与摘解,由( )负责。
A.车辆乘务员
B.调车组
C.随车机械师
D.机车乘务员
[判断题]依据Q/SY 08243-2018《管线打开作业安全管理规范》,管线打开作业中,应对所有隔离点进行有效隔断,并进行标识。
A.正确
B.错误
[单项选择]某甲与乙企业之间因高压锅质量问题发生纠纷,甲以产品侵权为由,向乙企业的办事机构所在地A市A区法院提起诉讼。乙提出管辖权异议,认为应当由该高压锅的制造商丙企业所在的A市B区法院管辖为宜。A区法院没有对乙的异议作出裁定,将案件直接移送至B区法院。原告甲提出异议,不同意在B区法院审理,要求移送回A区法院, B区法院支持甲的异议,将案件移送回A区法院。 A区法院遂提请A市中级法院为本案指定管辖。A市中级法院经审查后,指定B市中级法院审理此案。下列做法中正确的是;
A. A区法院没有对乙的异议作出裁定,将案件直接移送至B区法院
B. B区法院支持甲的异议,将案件移送回A区法院
C. A区法院提请A市中级法院为本案指定管辖
D. A市中级法院指定B市中级法院审理此案
[单项选择]Psychologist George Spilich and colleagues at Washington College in Chestertown, Maryland, decided to find out whether, as many smokers say, smoking helps them to "think and concentrate." Spihch put young non-smokers, active smokers and smokers deprived (被剥夺) of cigarettes through a series of tests.
In the first test, each subject (试验对象) sat before a computer screen and pressed a key as soon as he or she recognized a target letter among a grouping of 96. In this simple test, smokers, deprived smokers and nonsmokers performed equally well.
The next test was more complex, requiring all to scan sequences of 20 identical letters and respond the instant one of the letters transformed into a different one. Non-smokers were faster, but under the stimulation of nicotine (尼古丁), active smokers were faster than deprived smokers.
In the third test of short-term memory, non-smokers made the fewest errors, but deprived smokers committed fewer errors than active smokers.
The fourt
A. smokers should not expect to become airline pilots
B. smoking in emergency cases causes mental illness
C. no airline pilots smoke during flights
D. smokers may prove unequal to handling emergency cases
[单选题]太阳的能量传递至地球是通过( )
A.太阳的温度很高,它把周围的空间加热,变热了的空间再把能量传递到地球
B.从太阳来的能量是透过对流传至地球的
C. 从太阳来的能量以辐射的形式直接传至地球,不经任何介质
[单选题]负有安全生产监督管理职责的部门在监督检查中,应当互相配合,实行();确需分别进行检查的,应当互通情况.
A.A.联合检查
B.B.分级检查
C.C.委托检查
[单选题]根据《安全事故调查规程》,600兆瓦以上锅炉因安全故障中断运行240小时以上者属于()
A.特别重大设备事故
B.重大设备事故
C.较大设备事故
D.一般设备事故
[单项选择]We have to realise how old, how very old, we are. Nations are classified as "aged" when they have 7 per cent or more of their people aged 65 or above, and by about 1970 every one of the advanced countries had become like this. Of the really ancient societies, with over 13 per cent above 65, all are in Northwestern Europe. We know that we are getting even older, and that the nearer a society approximates to zero population growth, the older its population is likely to be-- at least, for any future that concerns us now.
To these now familiar facts a number of further facts may be added, some of them only recently recognised. There is the apparent paradox that the effective cause of the high proportion of the old is births rather than deaths. There is the economic principle that the dependency ratio-- the degree to which those who cannot earn depend for a living on those who can--is more advantageous in older societies like ours than in the younger societies of the developing world, be
A. all developed nations without exception.
B. every one of Western European countries.
C. Germany, France, and the United Kingdom.
D. Sweden, Switzerland, and the United States.
[单项选择]患者胸闷气喘、心悸、咳嗽、咯稀白痰,肢冷、畏寒,尿少浮肿,自汗,汗出湿冷。舌质暗淡或绛紫,苔白腻,脉()
A. 心肺气虚、血瘀饮停证
B. 气阴两虚、心血瘀阻证
C. 阳气亏虚、血瘀水停证
D. 肾精亏损、阴阳两虚证
[单选题]尿沉渣检查对慢性肾衰竭的诊断最有价值的( )
A.红细胞管型
B.白细胞管型
C.透明管型
D.颗粒管型
E.蜡样管型
[判断题]圆盘刀转动时不能够擦拭。()
A.正确
B.错误
[多项选择]管理是由( )等环节组成的过程。
A. 可行性研究
B. 策划
C. 决策
D. 执行
E. 检查
[多选题]对一般超偏载货车,货检站在确认不危及行车安全时可不甩车整理,应记录()等,并将上述信息及时通知发到站,电报通知下一编组站,同时在24小时内将信息上报铁路局货运主管部门。
A.车种
B.车号
C.发到站
D.货物品名
[填空题]
In 1959 the average American family paid $ 989 for a year’s supply of food. In 1972 the family paid $1,311.That was a price increase of nearly one-third. Every family has had this sort of experience. Everyone agrees that the cost of feeding a family has risen sharply. 41.______.
Many blame the farmers who produce the vegetables, fruit, meat, eggs, and cheese that stores offer for sale. According to the U. S. Department of Agriculture, the farmer’s share of the $1,311 spent by the family in 1972 was $ 521.This was 31 per cent more than the farmer had received in 1959.
But farmers claim that this increase was very small compared to the increase in their cost of living. 42.______These include truck drivers, meat packers, manufacturers of packages and other food containers, and the owners of stores where food is sold. They are among the "middlemen" who stand between the farmer and the people who buy and eat the food. Are middlemen the ones to bla
[填空题]( )被恩格斯誉为“中世纪最后一位诗人,同时又是新时代最初一位诗人”。
[单项选择]我们把能保持物质一切化学性质的最小粒子称()。
A. 分子
B. 原子
C. 中子
D. 原子核
[单项选择]Z型传播是指()
A. 经胎盘传播和垂直传播相交叉的现象
B. 垂直传播和平行传播交叉的现象
C. 分娩时引起的传播和经胎盘传播相交叉的现象
D. 上行性传播和经胎盘传播相交叉的现象
E. 分娩时引起的传播和上行性传播相交叉的现象
[单选题]线路位置称号指上线、中线或下线和()的左线或右线。
A. 面向送电侧
B.面向受电侧
C.面向线路杆塔号增加方向
D.面向线路杆塔号增加方向
[多选题]如果两种危险货物彼此会起危险反应并造成()后果,则不能放置在同一个外容器或在大型容器中。;
A.燃烧或放出大量热
B.放出易燃、毒性或窒息性气体
C.产生腐蚀性物质
D.产生不稳定物质
[单选题]接发列车时,应站在( ),随时注意邻线机车车辆动态。
A.规定地点
B.指定地点
C.固定地点
D.安全地点
[单选题]当设施不使用时,应停靠牢固,有可靠的固定装置,并确保固定装置的( )和强度满足当地最大风力的抗风荷载要求。
A.技术状态
B.稳定性
C.可靠性
D.硬度
[填空题]作业中暂时中断离开作业地点,后继续工作时,工作领导人要征得<--NRC-->的同意,取回钥匙和工作票,重新检查安全措施,符合工作票要求后方可开工。
[单选题]两条并联的巷道,风阻大的[ ]。( )
A.风压大
B.风速小
C.风量大
D.风量小
[单选题]SS4型、SS8型电力机车电子控制柜的电子控制电路主要由三个环节组成,不包括( )。
A.调节器
B.移向触发
C.脉冲放大
D.电源及同步信号
[多项选择]
患者女性,28岁。原发性不孕5年,平时月经不规律,初期13岁,3-15天/60-90天,痛经(-)。查体:身高160cm,体重70kg,多毛,痤疮(+)、泌乳(-)。B超示:子宫小于正常,双侧卵巢增大,每侧卵巢直径2-9mm的小卵泡有12个以上。丈夫精液常规为精子密度60×10/ml,a级为8%,b级为19%,c级为23.9%,d级为56%,精子畸形率为45%。
如果采用IVF-ET治疗,在促排卵过程中,可能出现的并发症是()
A. 血拴形成
B. OHSS
C. 异位妊娠
D. 受精障碍
E. 卵巢扭转
F. 卵巢反应低下