热门试题:
[单选题]在接触网支柱及接触网带电部分( )范围以内的金属结构均须接地，与接触网相连的支柱及金属结构上，若未装设接地线或接地线已损坏时，禁止人员与之接触。
A.2m
B.3m
C.5m
D.10m
[判断题]矿井空气的主要成分有：氮气、氧气和瓦斯。( )
A.正确
B.错误
[填空题]For some educators, there is nothing wrong with fun and games. A group called the Education Arcade recently held a {{U}} (36) {{/U}} in Los Angeles to discuss the future of educational games, and it brings together {{U}} (37) {{/U}} game designers, publishers, teachers and policymakers.
The Education Arcade {{U}} (38) {{/U}} at the Massachusetts Institute of Technology, near Boston. Professors {{U}} (39) {{/U}} with the Microsoft Company to create what they called the Games-to-Teach Project. The group began to explore {{U}} (40) {{/U}} to use technology in teaching and learning. They worked with game designers to develop ideas about how mathematics and science could {{U}} (41) {{/U}} with game playing.
The group recently {{U}} (42) {{/U}} that a "Games for Learning" statement will be placed on some products. The goal is to help people find games that are {{U}} (43) {{/U}} but will also teach.
The Entertainment Software Association says {{U}} (44) {{/U}}. Sales of s
[单项选择]
People living on parts of the south coast of England face a serious problem. In 1993, the owners of a large hotel and of several houses discovered, to their horror, that their gardens had disappeared overnight. The sea had eaten into the soft limestone cliffs on which they had been built. While experts were studying the problem, the hotel and several houses disappeared altogether, sliding down the cliff and into the sea.
Erosion (侵蚀) of the white cliffs along the south coast of England has always been a problem but it has become more serious in recent years. Dozens of homes have had to be abandoned as the sea has crept farther and farther inland. Experts have studied the areas most affected and have drawn up a map for local people, forecasting the year in which their homes will be swallowed up by the hungry sea.
Angry owners have called on the government to erect sea defenses to protect their homes. Government surveyors have pointed out that in most cases, this is
A. it is too costly and will endanger neighbouring areas
B. the government is too slow in taking action
C. they will be easily knocked down by waves and currents
D. house agents along the coast do not support the idea
[单项选择]
风险分析包括：风险识别、 (16) 、风险评估、 (17) 。
（16）处填（）。
A. 风险引导
B. 风险分散
C. 风险预测
D. 风险总结
[判断题]未编有记录的施封锁保管180日后，方可销毁或回收。
A.正确
B.错误
[单项选择]千分尺两测量面将与工件接触时，要使用（），不要直接转动微分筒。
A. 螺杆
B. 千分尺
C. 测力装置
D. 固定套管
[单选题]单线区段线桥工区应配备的停车信号牌、减速信号牌、减速地点标的数量为( )。
A.2个
B.4个
C.6个
D.8个
[单选题]路用列车或施工机械进入施工地段时，应在施工防护人员显示的停车手信号前停车，根据施工负责人的要求，按（ ）办法，进入指定地点。
A.引导
B.担当救援作业
C.调车
[判断题]采用成型保温材料的主保温层厚度大于150mm时应分层。
[多项选择]下列哪些步骤是传统动画创作不可缺少的（）。
A. 动画生成
B. 造型设定
C. 渲染
D. 原画生成
[判断题]“唐三彩”是一种挂铅釉的低温彩釉瓷器。( )
[单项选择]
硫酸沙丁胺醇
A. 用于蛔虫病、肠虫病
B. 用于消化不良
C. 用于感冒
D. 用于粘痰不易咳出
E. 用于支气管哮喘
[单项选择]根据1993年宪法修正案的规定，省、市、县、乡、镇的人民代表大会中，哪一级人民代表大会的任期为每届三年？（）
A. 省的人民代表大会
B. 市(含设区的市和不设区的市)的人民代表大会
C. 县的人民代表大会
D. 乡、镇的人民代表大会
[单选题]在电动机的继电接触控制电路中，具有短路保护、过载保护、欠压保护和行程保护，其中，需要同时接在主电路和控制电路中的保护电器是：
A.热继电器和行程开关
B.熔断器和行程开关
C.接触器和行程开关
D.接触器和热继电器
[多选题] 根据《人民币鉴别仪通用技术条件》（GB_16999-2010），以下对A类人民币点验钞机的应具备的鉴别性能表述正确的有（）。
A.具有券别、套别、版别三种识别能力；
B.鉴别技术种类不低于9种；
C.假币误辨率不得高于0.02%；
D.开启冠字号码识别时的鉴别速度不低于700张/分钟。
[单项选择]俗话说“知子莫过父，知女莫过母”这句话体现了家庭教育中（）
A. 教育者对受教育者了解和影响的深刻性
B. 家庭群体中交往接触的密切性
C. 家庭群体中教育和生活的统一性
D. 家庭对受教育者的控制方式具有多维性
[单项选择]Goal of American Education
Education is an enormous and expensive part of American life. Its size is matched by its variety.
Differences in American schools compared with those found in the majority of other countries lie in the fact that education here has long been intended for everyone — not just for a privileged elite. Schools are expected to meet the needs of every child, regardless of ability, and also the needs of society itself. This means that public schools offer more than academic subjects. It surprises many people when they come here to find high schools offering such courses as typing, sewing, radio repair, computer programming or driver training, along with traditional academic subjects such as mathematics, history, and languages. Students choose their curricula depending on their interests, future goals, and level of ability. The underlying goal of American education is to develop every child to the utmost of his or her own possibilities, and to give eac
A. The large number of its schools.
B. The variety of the courses offered in its schools.
C. Its special consideration given to immigrants.
D. Its underlying, goal to develop every child’s abilities to the fullest extent.
[单项选择]操作站的缺省启动文件为（）
A. default.stb
B. factory.stb
C. default.stn
D. factory.stn
[单选题]高处特种作业人员应该每年参加不少于()h的培训。
A.10
B.6
C.8
[判断题]串级调节系统就是将调节系统的各个环节串联起来。
A.正确
B.错误
[判断题]当系统无功功率不足时，还可以通过调整变压器分接头调压。
A.正确
B.错误
[简答题]论述仲裁条款自治理论及我国法律的有关规定。
[多选题]下列关于在PowerPoint中编辑影片的说法,错误的是( )(1分)
A.在PowerPoint中播放的影片文件,只能播放完毕后才能停止
B.默认状态下,鼠标单击播放影片,再次单击则停止影片播放
C.插入PowerPoint中的视频文件不会显示图像
D.只有在播放幻灯片时,才能看到影片效果
[单选题]1.33公安机关交通管理部门对被扣留的车辆应当妥善保管，不得使用。逾期不来接受处理，并且经公告_____仍不来接受处理的，对扣留的车辆依法处理。
A.1个月
B.3个月
C.6个月
D.12个月
[判断题]标准:为在一定的范围内获得最佳秩序,对活动和结果规定共同的和重复使用的规则、指导原则或特性文件。
A.正确
B.错误
[判断题]实施消毒作业行动结束归队进入营区时,对参加处置行动的车辆装备和人员进行二次洗消,彻底消除安全隐患,并做好人员的后续健康跟踪。
A.正确
B.错误
[单项选择]OSI模型的哪层会经常发生故障（）
A. 第1层
B. 第1层～第3层
C. 第2层～第6层
D. 第7层
[单项选择]我国现行的车间空气中有害物质接触限值，应用最广的是
A. 容许接触限值
B. 时间加权平均阈限值
C. 最高容许浓度
D. 保障健康的平均职业接触限值
E. 上限值
[判断题]除正常出勤外,考勤情况还包括:加班、调班、假期、 旷工、迟到、早退等。
A.正确
B.错误
[单项选择]（）表示极差。
A. 绝对偏差的绝对值之和的平均值
B. 平均偏差与测量均值的比值
C. 一组测量值内最大值与最小值之差
D. 测量值与真值之差
[单项选择]“语不惊人死不休”出自______之口。
A. 杜甫
B. 白居易
C. 吴承恩
D. 蒲松龄
[单选题]一个校正好的超声探测系统，在深度100mm直径4mm平底孔上得到50mm的波高显示，作为基准灵敏度，如深度为200mm处得到25mm波高显示缺陷，测缺陷的当量平底孔直径是（）。
A.10.3mm
B.11.3mm
C.12.3mm
D.13.3mm
[判断题]建设单位违反本法规定，要求建筑设计单位或者建筑施工企业违反建筑工程质量、安全标准，降低工程质量的，责令改正，可以处以罚款；构成犯罪的，依法追究刑事责任。（）
A.正确
B.错误
[单选题]高压设备上工作至少应有（）一起工作。
A.1人
B.2人
C.3人
D.4人
[判断题]电容器组的中修周期为3年。( )
A.正确
B.错误
[多选题] 属于物理爆炸的是( )。
A. 液化气钢瓶爆炸
B. 汽锅炉爆炸
C.压缩气体爆炸
D. 粉尘爆炸
E. 压力容器爆炸
[简答题]写出CRH1型动车组蓄电池断路器在不同电压下的动作状态？
