热门试题:
[单选题]柴油机全负荷运转时如发现曲轴箱发热或透气管冒出大量油气,正确的操作是()。
A.立即停车
B.立即减速
C.立即停车并开启曲轴箱门检查
D.立即打开透气
[单项选择]车辆上的金属软管所承受的最高工作压力比制动软管要（）。
A. 高
B. 低
C. 相当
D. 不确定
[判断题]承、发包工程，工作票可实行“双签发”。签发工作票时，双方工作票签发人在工作票上分别签名，各自承担相应的安全责任。
A.正确
B.错误
[多项选择]代理个人保险营业网点及销售人员在办理代理个人保险产品销售活动中以下行为（）不正确的是：
A. 代投保人、被保险人在保险合同及相关文件上签字
B. 以本机构名义销售保险产品或者进行保险产品宣传。
C. 在投保前向客户进行风险提示和投保提示。
D. 挪用、截留保险费或保险金。
[判断题]( )道碴必须有“碎石道碴产品合格证”,作为竣工验收和评定道床质量的依据。
A.正确
B.错误
[填空题]Education is too important to take seriously. When people take anything too seriously, they put on blinders, which cause them to miss the important{{U}} (36) {{/U}}of what is going on around them. They develop "tunnel vision,’ which limits and{{U}} (37) {{/U}}their perception of{{U}} (38) {{/U}}. Education is too important to be limited by those who have{{U}} (39) {{/U}}to wear blinders and develop tunnel vision.
I believe the accountability movement has{{U}} (40) {{/U}}many educators to take education too seriously. When we take education too seriously, we put{{U}} (41) {{/U}}tests scores above children, we put lesson plans above teachers, and we put on our blinders, only to see a{{U}} (42) {{/U}}small segment of the child--that segment that can be{{U}} (43) {{/U}}easily rather than looking at the child as a whole.{{U}} (44) {{/U}}.
How can we take off our blinders How can we eliminate tunnel vision to see the whole child How can we not take everything so
[判断题]在得到工作负责人的同意后，作业人员可登上起重机。
A.正确
B.错误
[多项选择]头脑风暴法专家小组应由（）组成
A. 方法论学者
B. 设想生产者
C. 分析者
D. 演绎者
[判断题]高危行业、领域的生产经营单位可根据行业管理规定，不投保安全生产责任保险。
A.正确
B.错误
[单项选择]
Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic of sleepiness in the nation. "I can’t think of a single study that hasn’t found Americans getting less sleep than they ought to," says Dr David. Even people who think they are sleeping enough would probably be better off with more rest.
The beginning of our sleep-deficit crisis can be traced to the invention of the light bulb a century ago. From diary entries and other personal accounts from the 18th and 19th centuries, sleep scientists have reached the conclusion that the average person used to sleep about 9.5 hours a night. "The best sleep habits once were forced on us, when we had nothing to do in the evening down on the farm, and it was dark. " By the 1950s and 1960s, that sleep schedule had been reduced dramatically, to between 7.5 and 8 hours, and most people had to wake to an alarm clock. "People cheat on their sleep, and they d
A. the performance tests used in the study of sleep deficit
B. special branches of knowledge that are being studied
C. people whose behavior or reactions are being studied
D. the psychological consequences of sleep deficit
[单选题]桂枝汤中具有调和营卫作用的配伍是
A.桂枝、生姜
B.生姜、大枣
C.生姜、甘草
D.桂枝、大枣
E.生姜、芍药
[多选题]半自动车钩具有（ ）的自动连接和气动分解功能
A.机械
B.风路
C.电路
D.水路
E.以上都是
[简答题]坚持推进国家安全体系和能力现代化，坚持以改革创新为动力，加强法治思维，构建 的国家安全制度体系，提高运用科学技术维护国家安全的能力，不断增强塑造国家安全态势的能力。
[填空题]Any mistake made in the{{U}} (36) {{/U}}of a stamp raises its value to stamp{{U}} (37) {{/U}}. A mistake on a{{U}} (38) {{/U}}stamp has made it worth a million and a half times its face value. Do you think it{{U}} (39) {{/U}} Well, it is true. And this is how it{{U}} (40) {{/U}}.
The mistake was made more than a hundred years ago in the former British{{U}} (41) {{/U}}of Mauritius, a small island in the Indian Ocean. In 1847, an order for stamps was sent to London. Mauritius was about to become the{{U}} (42) {{/U}}country in the world to put out stamps.
Before the order was filled and the{{U}} (43) {{/U}}arrived from England, a big dance was planned by the Commander-in-chief of all the armed forces on the island.{{U}} (44) {{/U}}. Stamps were badly needed to post the letters.
Therefore, an islander, who was a good printer, was told to copy the pattern of the stamps.{{U}} (45) {{/U}}.
Today, there are only twenty-six of these misprinted stamps left --
[多选题] 建筑物按耐火等级分为()。
A. 一级建筑
B. 二级建筑
C. 三级建筑
D. 四级建筑
[单项选择]根据标准化法的规定，我国积极鼓励采用( )。
A. 国家标准
B. 国际标准
C. 行业标准
D. 地方标准
[单项选择]应计贷款范围从本金或利息逾期（）内（含）仍未收回的自营贷款，变更为除非应计贷款以外的自营贷款。
A. 30天
B. 60天
C. 90天
D. 180天
[单选题]肺癌大多起源于( )
A.肺毛细血管
B.肺小动脉
C.肺小静脉
D.支气管粘膜上皮
E.支气管软骨
[判断题]大型商场发生火灾时,火势可沿楼梯间、内装修或堆积的可燃商品,以及沿外墙窗口向上蔓延,在很短的时间内便可形成立体燃烧。( )
A.正确
B.错误
[多选题]中国封建社会的社会结构特点是族权和政权相结合的封建宗法等级制度。其核心是宗族家长制，突出( ）。
A.父权
B.夫权
C.君权
D.族长权
E.人权
[单项选择]It's known to all that light travels much more quickly than sound does（）
A. 所有知道的全部内容就是光跑的速度要比声音快得多。
[判断题]进站信号机采用黄、绿、红、黄、月白五个灯位的色灯信号机。
A.正确
B.错误
[单选题]古代音律分为五音,其前后顺序是( )
A.宫、羽、角、商、徵
B.宫、商、徵、角、羽
C.宫、商、角、徵、羽
D.宫、羽、商、角、徵
[单项选择]男孩，8岁，因发热3天伴抽搐1天于7月20日入院，诊断为流行性乙型脑炎。入院后次日进入昏迷状态，小便失禁，在病程第6天体温有下降，次日又出现高热，并出现呼吸急促、肺部闻及中细湿啰音。该患儿发生病情加重的原因可能是（）
A. 中枢性呼吸衰竭
B. 周围性呼吸衰竭
C. 院内感染
D. 体温中枢不稳定
E. 异物吸入
[单项选择]下列病变部位位于心外的是（）。
A. 动脉导管未闭
B. 房间隔缺损
C. 室间隔缺损
D. 法洛四联症
E. 肺动脉瓣狭窄
[简答题]××年××月××日，××国××中转车站发生两列火车相撞事故，共有35人丧生，400多人受伤，两列火车完全报废。
事故原因调查
第一原因 信号室里一根通了电的电线未被束起，当它碰到其他接头时，就把电直接传给了信号灯，使停驶列车后面的信号灯变绿，造成后面列车撞向停驶列车，引起悲剧发生。
第二原因 信号系统安装工期紧，没有检查即投入使用。
第三原因 客车车厢存在不安全装置，不能有效减轻因撞击产生的伤害。
改进措施
事故发生以后，事故调查组建议对该国铁路车辆的安全性能进行研究改进，去掉了车厢中尖锐的物体，座椅改进成一种高背防撞式，以保护人体在事故中少受伤害。
在火车上安装无线电，帮助司机了解情况。
在火车上安装黑匣子，会对事后的调查，以及事故的定性有很大帮助。司机是否刹车，自动系统给了他什么样的警告，他经过的信号灯显示了什么样的信号，这些都会被记录下来，并得到证实。特别是如果司机遇难，没有人能提供证据时，黑匣子对事故调查人员的帮助更大。
问题：
(1)这起事故的直接原因和间接原因是什么
(2)这起事故应吸取的经验教训是什么
[多选题]依据变电检测管理规定编制的六十七类设备检测细则，下列描述正确的是：（ ）。
A.红外热像检测细则
B.母线电容电流检测细则
C.绝缘油颗粒数检测细则
D.绝缘油水分检测细则
E.红外精确测温细则
[多选题] 报警阀动作后（ ）。
A.水力警铃应鸣响
B.距水力警铃3m远处的声压级不应低于70dB
C.消防控制室应显示水流指示器的反馈信号
D.消防控制室应能直接手动启停喷淋泵
E.消防控制室应能显示喷淋泵的反馈信号
[判断题]移动潜水泵时应断电。潜水泵应先放入水中再启动电源。检查、维修潜水泵时应先断电并悬挂“禁止操作”标示牌。
A.正确
B.错误
[多选题]209HS型车中央悬挂装置的摇枕上焊有（）。
A.牵引拉杆座
B.下旁承
C.中心销座
D.横向油压减振器
[单选题]BG002如发现上部井段掉块增多,要及时提醒司钻,坚持大排量循环,切忌()。
A.上提钻具
B.停转盘
C.停泵
D.下放钻具
