[单选题]合成高分子物质燃烧时不仅会产生一氧化碳、二氧化碳，而且还会分解出乙醛、氯化氢和(　　)等有毒气体，给人的生命安全造成更大的威胁。
A.甲酸
B.氰化氢
C.乙酸
D.氨气

[简答题]信号机的关闭时机是如何规定的？

[单选题]绝缘电阻表测量用的导线应使用相应电压等级的绝缘导线，其端部应( )。
A.有绝缘套
B.有标记
C.用绝缘胶带绑扎
D.带标签

[单项选择]( )是中央银行作为“最后贷款人”角色和地位的具体体现，同时也是中央银行对商业银行实施信用调控，实现货币政策目标的央行政策工具。
A. 转贴现
B. 贴现
C. 承兑
D. 再贴现

[判断题]（ ）温度应力式无缝线路，一般由固定区、伸缩区、缓冲区三部分构成。
A.正确
B.错误

[单项选择]当身体重心偏离达稳定极限时，身体平衡的保持采取的是（）。
A. 踝关节协同模式
B. 髋关节协同模式
C. 跨步对策
D. 稳定极限
E. 姿势协同

[判断题]开关柜典型分类包括负荷开关单元类型、负荷开关-熔断器（组合电器）单元、断路器单元等三种。（ ）
A.正确
B.错误

[判断题]清理、维护、维修设备时，必须停机后进行。
A.正确
B.错误

[单选题]ACS2000 计轴检修周期不正确的是
A.日检
B.月检
C.周检
D.年检

[不定项选择题]根据《关于进一步加强环境影响评价管理防范环境风险的通知》.环境风险预测设定的最大可信事故应包括()
A.项目施工过程中生产设施发生火灾事故
B.项目施工过程中生产设施发生爆炸事故
C.项目营运过程中生产设施发生火灾、爆炸事故
D.项目营运过程中生产设施发生危险物质泄漏事故

[单项选择]初孕妇自觉胎动，多数开始于（）
A. 妊娠12～14周
B. 妊娠15～17周
C. 妊娠18～20周
D. 妊娠21～23周
E. 妊娠24～26周

[单项选择]达达主义和超现实主义拥有共同的主将，他们是（）。
A. 戈蒂耶、波德莱尔、王尔德
B. 魏尔伦、韩波、马拉美
C. 布勒东、阿拉贡、艾吕雅
D. 加缪、萨特、波伏瓦

[单选题]儿童1岁时头围与胸围的增长曲线形成交叉，说明胸围生长发育是
A.正常
B.低体重
C.肥胖
D.消瘦
E.以上都不是

[单项选择]西式宴会正式开始的标志是（ ）。
A. 主人拿起餐巾
B. 主人拿起餐具
C. 主宾拿起餐具
D. 主人坐到餐桌前

[判断题]变电硐室要安设向外开的防火铁门 。
A.正确
B.错误

[单项选择]解痉药可：（）
A. 减轻肺水肿，改善脑缺氧 
B. 解除支气管平滑肌及血管平滑肌痉挛 
C. 消除急性肺水肿，并防治急性肾功能衰竭 
D. 防治大量出血 
E. 纠正休克和代谢失调

[单选题]路由表中有如下几条路由:a1.0.0.0255.0.0.01.1.1.1b1.2.0.0255.255.0.01.1.1.1c1.2.3.0255.255.255.01.1.1.1d1.2.3.4255.255.255.2551.1.1.1在执行命令access-list1permit1.2.3.40.0.0.255后，请问哪些路由可以匹配（）
A.只有d通过
B.只有c通过
C.只有ab通过
D.只有cd通过

[单选题]CW—200K型转向架上的高度控制阀是用手维持车体在不同（ ）下，均可轨面保持一定高度。
A.动载荷
B.静载荷
C.垂载荷
D.重载荷

[单项选择]眼内异物对视力的威胁主要有以下哪些因素( )
A. 机械性破坏组织结构
B. 增加交感性眼炎的发生率
C. 增加眼内感染机会
D. 引起组织炎症反应
E. 以上均是

[多项选择]电弧焊的工时定额由（）、休息和生理需要时间以及准备结束时间四部分组成。
A. 作业时间
B. 布置工作地时间
C. 设计时间
D. 学习时间

[单选题]《国铁集团关于明确退票改签收费有关事项的通知》中规定：开车前不足24小时的，按票面价格（ ）计。
A.5%
B.10%
C.15%
D.20%

[填空题]Proper Physical Labor
In the past people had to use their physical bodies in the course of their normal work. But today someone may get up, go to work in a car, then sit down, get up to go home in the car and when arriving at home, sit down again for the rest of the day. In such a life there is no physical labor. This physical inactivity is one of the main reasons for a host of diseases. Sport, running, walking and other things must be added to our life if our normal work does not require us to exert ourselves physically.
Going to Sleep When One Feels Sleepy
This may sound simple, but many people stay up late even when their body is telling them that it is time to sleep. Yoga doctors also say that it is better to sleep in the night and be active during the day. However, people such as students will take coffee and stimulants to study late into the night. Others develop the habit of remaining active at night and sleeping during the day. While we can do thi

[简答题]机械设备安装的一般程序是什么

[单选题](618135)自校输出用来检查仪器及信号线的( )。(1.0分)
A.好坏
B.大小
C.方向
D.通断

[单选题]线路作业应在良好的天气下进行，遇有恶劣气象条件时，（）工作。
A.工作负责人同意下可以继续
B.应停止
C.有人监护下可以继续
D.应继续

[填空题]

If you think you can make the planet better by clever shopping, think again. You might make it worse.
You probably go shopping several times a month, providing yourself with lots of opportunities to express your opinions. If you are worried about the environment, you might buy organic food; if you want to help poor farmers, you can do your bit by buying Fairtrade products; or you can express a dislike of evil multinational companies and rampant globalization by buying only local produce. And the best bit is that shopping, unlike voting, is fun; so you can do good and enjoy yourself at the same time.
Sadly, it’s not that easy. (41) . People who want to make the world a better place cannot do so by shifting their shopping habits: transforming the planet requires duller disciplines, like politics.
Organic food, which is grown without man-made pesticides and fertilisers, is generally assumed to be more environmentally friendly than conventional i

[判断题] 隔离开关分闸时,三相动触头应在同一平面
A.正确
B.错误

[判断题]车辆必须装有自动制动机和人力制动机。( )
A.正确
B.错误

[单选题]5.85.第85题
某台JCC5-220串级式电压互感器,二次配备两个绕组a-x和ad-xd,采用末端屏蔽法间接测量其绝缘支架电容量
,仪器为AI-6000E介质损耗测试仪,测试方法及数据如下:①A加压,X及底座接地,x、xd短接后接Cx,测得C1=10.1pF,tgδ1=2.01%;②A加压,X接地,底座对地绝缘,x、xd及底座短接后接Cx,测得C2=19.5pF, tgδ2=3.60%,求支架电容量C( )
A.C=C2-C1=19.5-10.1=9.4(pF)
B.C=C2+C1=19.5+10.1=29.6(pF)
C.C=4*C2-4*C1=4*19.5-4*10.1=37.6(pF)
D.C=4*C2+4*C1=4*19.5+4*10.1=118.4(pF)

[判断题]冬季外出作业时，要做好防寒准备工作，按规定着装，靴鞋要防滑、防寒帽有耳孔、要戴手套，并且要五指分开，注意保暖。
A.正确
B.错误

[填空题]信号机无效标为（），装在色灯信号机柱上或臂板信号机的臂板上。

[单选题]本线来车下道距离：120km/h＜vmax≤160km/h时，不小于（）m。
A.500
B.800
C.1400
D.2000

[单选题]当构件无吊鼻需用钢丝绳捆绑时,必须对棱角处采取( )措施,防止切断钢丝。钢丝绳做吊索时,其安全系数k=6~8。
A.捆梆
B.保护
C.切断
D.标识

[多项选择]下列选项中，对中国古代城市规划的政治背景分析无误的是( )。
A. 西周是我国奴隶制社会发展的重要时代，形成了完整的社会等级制度和宗教法礼关系，对于城市的规划也有相应的严格规则
B. 春秋和战国时代是从奴隶制向封建制的过渡时代，也是社会变革思想的“诸子百家”时代，也是我国古代城市规划思想的多元时代
C. 汉武帝时代，开始“废黜百家，独尊儒术”，提倡儒家的礼制思想有利于巩固皇权统治。城市形制就是礼制思想的多元时代
D. 到宋代，礼制思想在城市形制中的体现更为突出，其城市形制是集中设置东西两市的格局
E. 以上说法全不正确

[单项选择]中标通知书、施工图纸和工程量清单是建设工程施工合同文件的重要组成部分，就这三部分而言，如果在施工合同文件中出现不一致时，其优先解释顺序为( )。
A. 施工图纸、工程量清单、中标通知书
B. 工程量清单、中标通知书、施工图纸
C. 中标通知书、施工图纸、工程量清单
D. 施工图纸、中标通知书、工程量清单

[单项选择]

Parents with an adopted child wonder whether, when and how to tell their child that he or she is adopted. They also want to know if there are special problems for an adopted child.
Child and adolescent psychiatrists (精神病学家) recommend that the child be told about the adoption by the adoptive parents. Children should be told about their adoption in a way that they can understand.
There are two different views on when a child should be told about the adoption. Many experts believe the child should be told at the earliest age possible. This approach provides the child an early opportunity to accept and integrate the concept of being "adopted". Other experts believe that telling a child too early may confuse the young child who can’t really understand the event. These experts advise waiting until the child is older.
In either case, children should learn of their adoption from the adoptive parents. This helps give the message that adoption is goo
A. Adopted children recommend that they be told about the adoption by adoptive parents.
B. Experts all agree that telling the children too early about the adoption may confuse them.
C. Some experts hold that the adopted child should be kept in the dark as long as possible.
D. Parents should not discourage the adopted child from talking about the process of adoption.

[单选题]依据《中国南方电网有限责任公司电力安全工作规程》，患有精神病、癫痫病及经县级或二级甲等及以上医疗机构鉴定患有高血压、心脏病等不宜从事高处作业的人员，（ ）参加高处作业。
A.可以
B.酌情
C.适合
D.不应