热门试题:
[单选题]《铁路运输调度规则》规定，在具备良好转换设备和通信记录装置的条件下，对（）的调度命令，可使用列车无线调度通信设备向值乘司机、运转车长发布、传达。
A.利用天窗施工
B.按规定时间延迟施工
C.封闭施工区间
D.开通区间
[单选题]大多数物质的燃烧是一种( )的化学氧化过程。
A.放热
B.吸热
C.聚合
D.热量不变
[判断题]圆形截面的导线具有稳定性好，表面电场均匀和制造工艺简单的优点。（）
A.正确
B.错误
[多选题]CR300AF型动车组，车内信息显示内容包含：车次、车厢顺序号、（ ）、终点站到站信息。
A.始发站信息
B.发车/离站信息
C.预到站信息、中间站到站信息
D.途中信息
[单选题]抢险救援现场洗消器不包括（）。
A.洗消帐篷
B.热水器
C.空调
D.集污袋
[填空题]验电器具有<--NRC-->和抗干扰功能，自检时具有声、光等信号显示。
[填空题]所谓正弦交流电，即指大小和（） 随时间按正弦规律变化的电流（含电压、电动势）。
[单选题]甲在其制作的玉米馒头中违规超量添加色素，销售金额累计达22万元。此种色素为合法食品添加剂，超量使用不足以造成严重食物中毒事故或者其他严重食源性疾病。甲的行为应认定为（ ）。
A.不构成犯罪
B.生产、销售伪劣产品罪
C.生产、销售有毒、有害食品罪
D.生产、销售不符合安全标准的食品罪
[判断题]危险货物运输船舶的清舱、洗舱及清洗装运容器产生的污物、污水应当集中处理，不得排入水体。
[填空题]到客户处从事用电监察、检查、抄表收费等工作时，要主动出示（），说明来意。工作完毕，向客户表示（）。
[单选题]绝缘靴是由特种橡胶制成的,用于人体与()绝缘的靴子。
A.导体
B.电
C.半导体
[单选题]二层交换机单播转发表应包含的表项是？
A. Mac，Port
B. Mac，VlanID
C. IP，Port
D. IP，VlanID
[单项选择]北京是块人杰地灵的“宝地”，历史上有很多朝代在北京建都，请选出正确的朝代（）。
A. 辽、金、元、明、清
B. 唐、宋、元、明、清
C. 西周、辽、金、元、明
D. 隋、唐、宋、元、明
[单项选择]关于恙虫病的病理改变，叙述错误的是（）
A. 全身小血管炎、血管周围炎及单核吞噬细胞增生
B. 肝、脾因充血和单核吞噬细胞增生而增大
C. 局灶性或弥漫性心肌炎
D. 嗜酸粒细胞显著增生浸润
E. 出血性肺炎和间质性肾炎
[单选题]便携式可燃气体探测仪传感器正常使用寿命( )个月。
A.6
B.12
C.18
D.24
[单选题]部件装配程序的基本原则之一为( )。
A.先外后内
B.先大后小
C.先小后大
D.先内后外
[单项选择]
女性，25岁。半年来因找不到合适工作，渐起情绪不好，常背地里哭泣，问其何故，说自己得罪了不少人，还说对不起父母养育之恩，给父母写遗书。整天愁眉苦脸，不愿出门，对任何事都不感兴趣，睡眠差。体检及神经系统检查未见异常。
你考虑该病人诊断为（）
A. 神经衰弱
B. 反应性精神障碍
C. 精神分裂症单纯型
D. 抑郁症
E. 人格障碍
[单选题][596]正线道岔防爬器安装数量和方式表规定，单线铺设木枕时,18号道岔辙叉趾前正方向/反方向安装数量为（ ）对。
A.A、A.4/4
B.B、B.6/2
C.C、C.6/6
D.D、D.8/4
[填空题]评判性思维的组成主要包括智力因素、____________和情感态度因素。
[判断题]普速铁路线路发生故障，如不知来车方向，应在故障地点注意倾听和瞭望，发现来车，应急速奔向列车，用手信号旗（灯）或徒手显示停车信号。
A.正确
B.错误
[单项选择]国际物流的特点是：风险大，适应性强，借助国际服务业帮助，获取信息手段新，有高级管理人才及（）
A. 路途远
B. 变化多
C. 成本高
D. 结算慢
[单选题]职业道德的基本原则是（ ）。
A.严格自律
B.办事公道
C.大公无私
D.爱岗敬业
[单选题]带电作业绝缘工具电气预防性试验中，操作冲击耐压试验以（）为合格（采用250/2500μs的标准波）。
A. A.无二次击穿、闪络
B.B.无二次击穿
C.C.无一次击穿、闪络
D.D.无一次击穿
[单选题] 根据《证券法》,公司有下列情形之一的,不得再次公开发行公司债券的是( )。
A. 前一次公开发行的公司债券尚未募足
B. 对已公开发行的公司债券有违约或者延迟支付本息的事实,仍处于继续状态
C. 依照法律规定,改变公开发行公司债券所募资金的用途
D. 公司累计债券余额为公司净资产的百分之四十
[单选题] ( )大兴安岭林区发生特大森林火灾。这是新中国成立
以来毁林面积最大、伤亡人数最多、损失最为惨重的一次森林火 灾。
A. 1988年5月6日;
B. 1987年5月6日
C. 2002 年 7 月 28 日;
D. 2002年10月2日
[填空题]高压试验时,要确认人员均在安全地带后,经( )许可方准加压。
[判断题]半自动闭塞区段通过色灯信号机没有一个黄色灯光的显示。
A.正确
B.错误
[判断题]充装前的气瓶应保持剩余压力，其剩余压力不小于0.05MPa。
A.正确
B.错误
[单选题]在汛期暴风雨中行车,当列车通过防洪重点地段时,司机要( ),并随时采取必要的安全措施。
A. 加强瞬望
B. 减速慢行
C. 按规定限速运行
[单项选择]男，40岁，体格检查时发现鼻中隔显著左偏，左侧有棘突形成，但未诉何不适，应做何处理？（）
A. 建议住院手术矫正鼻中隔
B. 不诊断“鼻中隔偏曲”，也不予处理
C. 根据本人要求决定是否住院手术
D. 1%呋麻液滴鼻
E. 1%麻黄素滴鼻
[单选题]施工用金属房外壳（皮）应可靠接地。（）
A.正确
B.错误
C.略
D.略
E.略
F.略
[单选题]绝缘胶垫应每(____)用低温肥皂水清洗一次。
A. 半年
B. 一年
C. 两年
D. 三年
[判断题]调车作业变更股道，如变更计划不超过三钩时，可用口头方式不停车传达布置。（ ）
A.正确
B.错误
[单项选择]氟苯尼考休药期为（）
A. 500℃.d
B. 375℃.d
C. 750℃.d
D. 300℃.d
[单选题]When American-born actor Michael Pena was a year old, his parents were deported. They had illegally walked across the U.S. border from Mexico and when they were caught by immigration authorities, they sent Pena and his brother to stay with relatives in the U.S. “It was quite a bit of a gamble for my parents,” says Pena, “but they came back a year later.” Pena?s father, who had been a farmer in Mexico, got a job at a button factory in Chicago and, eventually, a green card. Pena stayed in Chicago until, at 19, he fled to Los Angeles to pursue his acting dreams. This family history makes Pena?s latest role especially personal. In Cesar Chavez, Pena plays the labor leader as he struggles to organize immigrant California farm workers in the 1960s. To pressure growers to improve working conditions and wages, Chavez led a national boycott of table grapes that lasted from 1965 to 1970 and is recorded in the film. Chavez, like Pena, was the American-born son of Mexican farmers who immigrated to the U.S. “
He understands this duality, the feeling of being born in a place but having a very big idea of where your heritage comes from,” says the film director, Diego Luna. “This thing of having to go to school and learn in English and then go home to speak Spanish with your parents.”
As immigration policy is hotly debated on Capitol Hill this year, Luna and others who were involved with Cesar Chavez are hoping the movie will spark new support for reform and inspire American Latinos to get involved. “The message Chavez left was that change couldn?t happen without the masses being a part of their own change,” says Ferrera, a first generation Honduran American who plays the union leader?s wife Helen. Rosario Dawson, who co-founded the advocacy group Voto Latino, plays Chavez ally and labor leader Dolores Huerta.
Immigrant-rights issues in the U.S. have evolved substantially in the years since Chavez founded the United Farm Workers (UFW). Undocumented workers now make up a far larger share of the agricultural workforce in California than they did in the 1960s, according to Miriam Pawel, author of The Crusades of Cesar Chavez, published the next month. Chavez was vehemently against illegal immigration, believing it made strikes difficult to execute and weakened the union. He initiated a program in the mid-1970s to locate undocumented farm workers and report them to immigration officials, Pawel writes. And despite his early victories, Chavez?s UFW union represents just a small part of those working on California farms today. “Chavez?s legacy is not in the field, which is sad,” says Pawel. Still, she says, his organizing strategies, featured extensively in Cesar Chavez, have been adopted by other activists, including those leading the modern immigrant-rights movement. Chavez's most important contribution may have been humanizing the Latino population for the American public. Farm laborers, many of whom barely spoke English, traveled across the country during the grape boycott, standing outside grocery stores to persuade housewives not to buy grapes and to spread the word about their plight. “They gave the boycott this very human face,” says Pawel. “It was families talking to other families,” says Luna. “It?s about the power we have just by being who we are.”
Whom does the underlined word “He” in PARAGRAPH TWO refer to?
A.Luna.
B.Pena.
C.Chavez.
D.Ferrera.
[单项选择]用参比灰制成灰锥并测定其熔融特征温度（ST、HT和FT），如其实测值与弱还原气氛下的参比值相差不超过多少（）℃，可证明炉内气氛为弱还原性。
A. 40；
B. 50；
C. 60；
D. 80。
[单选题]HXD１电力机车受电弓控制模块压缩空气有（ ）个不同的回路。
A.一
B.二
C. 三
