热门试题:
[单项选择]观察某药对病人治疗的结果：用治愈和非治愈表示，该资料为（）
A. 数值变量资料
B. 无序分类资料
C. 有序分类资料
D. 等级分类资料
E. 圆形分类资料
[多选题]关于钢轨焊接的说法正确的有（ ）。
A.焊接宜采用具有拉伸、保压功能的焊接设备
B.焊接作业轨温应不低于5℃，且应避免大风和雨雪等不良天气
C.钢轨焊接后应对焊缝进行探伤检查
D.焊接作业结束后，应测量原标记间距离，计算焊接作业范围内锁定轨温
E.必须在不良天气进行焊轨作业时，应采取相应措施，并使环境温度高于5℃
[单选题]单选题]安全管理必须要有强大的动力,并且正确地应用动力,从而激发人们保障自身和集体安全的意识,自觉积极地搞好安全工作。这种管理原则是人本原理中的( )原则。
A. 激励
B. 动态相关性
C. 动力
D. 因果关系
[单项选择]CRH2型动车组一、二级检修作业时，一级检修制动系统试验，制动手柄置快速挡，动车的BC压力值为（）。
A. （400±20）kPa
B. （410±20）kPa
C. （420±20）kPa
D. （430±20）kPa
[单选题]下列关于用机械压榨的种子饼的积载要求,说法错误的是( )。
A.只需要表面通风
B.袋装应采用双排式积载
C.航程超过天时,需要配备向货舱施放二氧化碳或惰性气体的设备。
D.定时测量货舱内不同深度的温度并记录
[单选题] 赔偿请求人要求赔偿,应当先向()提出。
A. 赔偿义务机关
B. 人民法院赔偿委员会
C. 赔偿义务机关的上级机关
D. 违法办案部门
[单选题]无缝线路应力放散作业应办理封锁施工手续，设置移动停车信号防护，放行列车或单机时，第一列45km/h,第二列（ ）km/h，其后正常。
A.35
B.45
C.60
D.80
[多选题]下列可以当场作出治安管理处罚决定的有（）
A. 违反治安管理行为事实清楚，证据确凿，处警告处罚的
B. 违反治安管理行为人对500元罚款的处罚无异议的
C. 违反治安管理行为事实清楚，证据确凿，处100元罚款的
D. 违反治安管理行为事实清楚，证据确凿，处400元罚款的
[多项选择]在知识经济时代，企业的竞争优势主要取决于企业的（），而不是传统的资源和资金。
A. 积累
B. 技术
C. 管理
D. 交流
[判断题]储存危险化学品的建筑必须安装通风设备，并注意设备的防护措施。
A.正确
B.错误
[多选题]移动看家指标考核，需订购以下哪些云存储产品（）
A.免费版
B.3天云存储
C.7天云存储
D.30天云存储
[填空题]常用的发酵液的预处理方法有（）、（）、（）。
[单项选择]排汽温度与冷却水温度的差值超过正常值，但冷却水进.出温差正常，可能原因是（）。
A. 冷凝量太多
B. 结垢
C. 水量不足
D. 压力低
[填空题]我们所取得的巨大胜利,哪一项不是执行( )路线的结果?
[单选题]民族区域自治制度是新中国的重要政治制度。在我国五个民族自治区中，最早和最晚建立的是( )。
A.内蒙古自治区、西藏自治区
B.内蒙古自治区、宁夏回族自治区
C.新疆维吾尔自治区、宁夏回族自治区
D.广西壮族自治区、西藏自治区
[单项选择]急性感染性多发性神经根炎，其主要的临床特征为（）
A. 进行性对称性弛缓性肢体瘫痪
B. 周期性对称性弛缓性肢体瘫痪
C. 进行性非对称性弛缓性肢体瘫痪
D. 非进行性对称性弛缓性肢体瘫痪
E. 周期性非对称性弛缓性肢体瘫痪
[单选题]单位重量液体通过水泵后所获得的( )称为扬程。
A.动能;
B.势能;
C.总能量。
[单选题]电子设备接地电阻不宜大于( )。
A. 4Ω
B. 0.5Ω
C. 8Ω
D. 10Ω
[单项选择]男性，75岁。冠心病、间断发生左心衰竭2年。因半天前与家人争吵后心悸、气短，不能平卧，咳粉红色泡沫痰，急诊入院。体检：BP90/60mmHg，R28次/分，神清，坐位，口唇发绀，两肺满布湿啰音及哮鸣音。给予患者洋地黄药物治疗，下列哪项不能反映洋地黄治疗有效（）
A. 呼吸困难减轻或消失
B. 心率减慢
C. 血压下降
D. 伴右心衰竭时水肿消退、尿量增多
E. 情绪稳定
[单选题]综合视频监控设备运用质量检查考核在用监控点的（）。
A.0.03
B.0.04
C.0.05
D.0.06
[单选题]( )是训练的出发点和归宿点
A.训练目的
B.训练的实质
C.业务训练
D.训练设施
[单选题]党的最高理想和最终目标是( )。
A.实现社会主义现代化
B.实现共产主义
C.实现共同富裕
D.成为世界第一大经济体
[单选题]当使用三菱RD77MS运动控制器时,( )是指对各轴的各个外部输入信号,设置输入类型、输入端子,信号的逻辑,以及输入滤波器的功能。
A.执行数据的备份功能
B.参数的初始化功能
C.外部输入信号设置功能
D.履历监视功能
[填空题]列车在IXLC控制级别或SM模式驾驶列车运行过程中不得松开（），否则会触发紧急制动。
[单选题]对进入疫区实施灭火救援和参与感染人员转运、疫区消毒、疑似感染物品或人群洗消的指战员，要如何坚决防止感染疫情。
A.全面隔离
B.药物预防
C.送诊治疗
D.全面洗消、做好个人健康跟踪
[单选题]中国人判断超重的界限值是() 查看解析
A.BMI≥27
B. BMI≥24
C.BMI≥28
D.BMI≥26
E.BMI≥25
[填空题]动火作业时间一般不超过 ()_天,不得更改,如需延长1 天,必须电话请示该级动火的审批部门, 获得批准后,方可作业,并作好记录备查。如延长时间超过 1 天,必须 ()_。(1.0 分)
[判断题]依据《胜利油田安全培训与安全能力提升管理细则》,管理层培训以实操培训为主,强化安全意识,提升风险识别能力、安全操作技能和应急处置能力。
A.正确
B.错误
[不定项选择题]共用题干
第一篇
DNA Testing
DNA testing reveals the genes of each individual person.Since the early twentieth century scientists
have known that all human characteristics are contained in a person's genes and are passed from parents to
children.Genes work as a chemical instruction manual for each part and each function of the body.Their
basic chemical element is called DNA,a copy of which can be found in every cell. The existence of genes
and the chemical structure of DNA were understood by the mid-1900s,but scientists have only recently been
able to identify a person from just a drop of blood or a single hair.
One of the most important uses of DNA testing is in criminal investigation.The very first use of DNA
testing in a criminal case was in 1985 in Great Britain,when a man confessed to killing a young woman in
the English countryside.Because police had found samples of the killer's DNA at the scene of the crime,a
biologist suggested that it might be possible to compare that DNA to some from the confessor's blood.To
everyone's surprise,the tests showed that he was not the killer. Nor was he guilty of a similar murder that
had happened some time earlier. At that point he admitted that he had confessed to the crimes out of fear
and police pressure.The police then asked 5,000 local men for samples of their blood,and DNA testing
revealed that one of them was the real murderer,so the first man was set free.
In 1992,two law professors,Peter Neufeld and Bany Scheck,decided to use DNA evidence to help set free
such mistakenly convicted prisoners.With the help of their students.they created a not-for-profit organization
called the Innocence Project. Most of their clients are poor men,many from racial and ethnic minorities.In
fact,studies have shown that U. S. judges and juries are often influenced by racial and ethnic background,and
that people from minority groups are more likely to be convicted. Some of these men had been sentenced to
death,a form of punishment used in thirty eight states out of fifty(as of 2006).For most of these prisoners,their
only hope was another trial in which DNA testing could be used to prove their innocence.
Between 1992 and 2006,the Innocence Project helped free 100 men.Some of these prisoners had been
in jail for ten,twenty years or more for crimes they did not commit.However,the goal of the Innocence
Project is not simply to set free those who are wrongfully in jail.They also hope to bring about real changes
in the criminal justice system.
Illinois in the late 1990s,a group of journalism students at Northwestern University were able to bring
about such a change in that state.They began investigating some Illinois prisoners who claimed to be inno-
cent. Through DNA testing,the students were able to prove that in fact the prisoners were not guilty of the
crimes they had been accused of. Thirteen of these men were set free,and in 2000,Governor Ryan of
Illinois decided to stop carrying out death sentences until further study could be made of the prisoners'
cases。
The use of DNA in criminal cases is still being debated around the world.Some fear that governments
will one day keep records of everyone'sDNA,which could put limits on the privacy and freedom of citizens.
Other people mistrust the science of DNA testing and think that lawyers use it to get their clients free whether
or not they are guilty.But for those whose innocence has been proven and who are now free men,DNA
testing has meant nothing less than a return to life.And with the careful use of DNA testing,no innocent
person should ever be convicted again.
The Innocence Project uses DNA testing to
A.set free innocent prisoners
B.help the police put people in prison
C.find out which lawyers are incompetent
D.prove that suspects are guilty
[单项选择]加速尚未吸收毒物的排泄应予（）
A. 针灸
B. 冲洗
C. 利尿
D. 洗胃
E. 吸氧
[填空题]民用航空气象人员执照技能考核合格证有效期为( )年。
[多选题]分队长职责分队长对全分队的工作负完全责任，履行下列职责：()
A.领导全分队落实战备措施，指挥全分队完成各项任务
B.领导全分队完成教育训练任务，提高全分队人员的政治素养和专业技能
C.领导全分队遵纪守法，严格执行规章制度，维护正规的生活秩序，养成良好作风
D.教育全分队爱护装备器材，严格执行装备器材的保养、保管和使用规定
E.帮助班长、副班长提高组织指挥能力和管理教育能力
[单选题]送电合闸操作应按照( )的顺序进行。
A.断路器（开关)—电源侧隔离开关(刀闸)—负荷侧隔离开关(刀闸)
B.断路器(开关)—负荷侧隔离开关(刀闸)—电源侧隔离开关(刀闸)
C.负荷侧隔离开关(刀闸)—电源侧隔离开关(刀闸)—断路器(开关)
D.电源侧隔离开关(刀闸)—负荷侧隔离开关(刀闸)—断路器（开关)
[单选题]S700K型电动转辙机正常转换道岔时，( )动作平稳无噪声，摩擦连接器作用良好。
A.动作杆
B.表示杆
C.减速器
D.滚珠丝杠
[判断题]一般来说含硫量越高的煤，其自然发火的可能性越高。
A.正确
B.错误
[判断题]凡站场或区间施工作业,均应严格落实车站登记、设专职防护员等措施。未按规定落实车站登记制度、设置专职防护员措施的施工作业,一律不准进行。
A.正确
B.错误
