热门试题:
[单选题]制造假肢常用的塑料材料有( )
A.热固性树脂增强塑料
B.热塑性塑料板材
C.热塑性泡沫料板
D.聚氨酯泡沫塑料
E.以上都是
[单选题]国铁车站由铁路总公司公布于( )
A. 《货物运输管理规则》
B. 《货物运价里程表》
C. 《货物运输品名表》
D. 《货物运输价格管理规则》
[判断题]掌上电力信息订阅服务,订制电子账单服务后,可及时接到月电量电费电子账单邮件。
A.正确
B.错误
[多选题]从业人员发现事故隐患或者其他不安全因素,应当立即向 ( )报告;接到报告的人员应当及时予以处理。
A.煤矿安全监察机构
B.地方政府
C.现场安全生产管理人员
D.本单位负责人
[判断题]循环水系统采用了杀菌和缓蚀的措施,可以减少循环水设备、管线因结垢引起的堵塞和因腐蚀引起的泄漏。( )
A.正确
B.错误
[填空题]干绝热变化中气块绝热上升,气压下降,温度呈指数()。
[判断题]尺寸精度越高,粗糙度越低()
A.正确
B.错误
[判断题]HXD1电力机车整车最大轮周牵引/电制动功率7200KW。
A.正确
B.错误
[单选题]调车作业中,接近被连挂的车辆时,不准超过 () km/h。
A. 5
B. 7
C. 10
D. 15
[判断题]EYEWin20监控系统的系统管理员用户密码是GDNZ。
A.正确
B.错误
[单选题]横梁吊装前,应根据吊装需要的平衡要求,经计算并现场指定吊点位置,吊点处要有对吊绳的防护措施,防止吊绳卡断。待横梁距就位点上方()mm稳定后,作业人员方可进入作业点。
A.100~200
B.200~300
C.300~400
D.400~500
[单项选择]蛋白质-能量营养不良主要病变部位是().
A. 心脾
B. 肝脾
C. 脾肺
D. 脾胃
E. 心肝
[单选题]( )kV及以下设备可用与带电部分直接接触的绝缘隔板代替临时遮栏。
A.10
B.35
C.110
D.20
[单项选择]淫羊藿炮制时用()
A. 甘草
B. 羊脂油
C. 豆腐
D. 黑豆汁
E. 胆汁
[单选题]()登杆或在杆塔上移位。
A.可以少量携带器材
B.禁⽌携带器材
C.施⼯负责⼈决定
[判断题]在变电站内,在不可能触及高压设备、二次系统的照明回路上工作时,应填用变电站(发电厂)第二种工作票
A.正确
B.错误
[单项选择]女,38岁,活动后心悸、气喘1年余,查体轻度贫血,心率快,律整,胸骨右缘第2肋间闻及响亮而粗糙的收缩期杂音(3/6级),首先应想到的疾病是()
A. 动脉导管未闭
B. 主动脉瓣关闭不全
C. 二尖瓣关闭不全
D. 室间隔缺损
E. 主动脉瓣狭窄
[多选题] 企业在安排产品生产进度计划时,对市场需求量大,而且比较稳定的产品,其全年任务可采取( )。
A.平均分配的方式
B.分期递增方法
C.抛物线形递增方式
D.集中轮番方式
[单选题]根据《十八项电网重大反事故措施-信息部分》规定,一、二类信息系统()的应用,应部署在不同的主机设备或宿主机上,提升冗余可靠性。
A.A.多节点
B.B.多服务
C.C.多链路
D.D.多设备
[单选题]当质量管理体系和环境管理体系被一起审核时,称为( )审核。
A.合作
B.联合
C.结合
D.共同
[不定项选择题]共用题干
IQ-gene
In the angry debate over how much of IQ comes from the genes that children inherit from par-ents and how much comes from experiences,one little fact gets overlooked:no one has identified any genes(other than those that cause retardation)that affect intelligence.So researchers led by Robert Plomin of London's Institute of Psychiatry decided to look for some.They figured that if you want to find a"smart gene,"you should look in smart kids.They therefore examined the DNA of students like those who are so bright that they take college entrance exams four years ear-ly-and still score at Princeton-caliber levels. The scientists found what they sought."We have,"says Plomin,"the first specific gene ever associated with general intelligence."
Plomin's colleagues drew blood from two groups of 51 children each,all 6 to 15 years old and living in six counties around Cleveland.In one group,the average IQ is 103.All the children are white .Isolating the blood cells,the researchers then examined each child's chromosome 6 .Of the
37 landmarks on chromosome 6 that the researchers looked for,one jumped out:a form of gene called IGF2R occurred in twice as many children in the high-IQ group as in the average group-32 percent versus 16 percent. The study,in the May issue of the journal Psychological Science, concludes that it is this form of the IGF2R gene that contributes to intelligence.
Some geneticists see major problems with the IQ-gene study.One is the possibility that Plomin's group fell for"chopsticks fallacy".Geneticists might think they've found a gene for chopsticks flexibility,but all they've really found is a gene more common in Asians than,say,Af-ricans.Similarly,Plomin's IQ gene might simply be one that is more common in groups that em-phasize academic achievement."What is the gene that they've found reflects ethnicity?"asks ge-neticist Andrew Feinberg of Johns Hopkins University."That alone might explain the link to intel-ligence,since IQ tests are known for being culturally sensitive and affected by a child's environ-ment."And Neil Risch of Standford University points out that if you look for 37 genes on a chro- mosome,as the researchers did,and find that one is more common in smarter kids,that might re- flect pure chance rather than a causal link between the gene and intelligence.Warns Feinberg:"I would take these findings with a whole box of salt."
What does Feinberg mean by saying"I would take these findings with a whole box of salt"?
A.He doubts the findings very much.
B.He would consider them while shopping for salt.
C.He definitely believes the findings.
D.He would consider them while eating his meals.
[判断题]根据测量的工具不同,联轴节测量的方法可分为两种。
[单项选择]通过膈主动脉裂孔的结构是()
A. 食管
B. 胸导管
C. 迷走神经
D. 下腔静脉
E. 交感干
[单项选择]X射线机操作员使用仪器前应检查仪器()。
A. 电源
B. 自检程序
C. 开机程序
D. 外观
[单选题]新课程改革中提出的课程“三维目标”是( )。
A.知识、智力、能力
B.基本知识、基本技能、基础性学历
C.知识与技能,过程与方法,情感、态度与价值观
D.知识、智力、情感
[判断题] 电器设备或线路不论停电与否在设备和线路没有安装地线和三相短路前,一律当有电看待,已经停电的设备和线路上工作时必须装好地线和三相短路.
A.正确
B.错误
[单选题]棒式绝缘子弯曲度不得超过( )。
A.0.5%
B.1%
C.1.5%
D.2.0%
[多项选择]根据《带电作业绝缘鞋(靴)通用技术条件》(DL/T676-2012)第7条,下列说法正确的是有()
A. 各种绝缘鞋(靴)只能在规定电压范围内作为辅助安全用具使用
B. 为确保使用安全,预防性检验周期不应超过6个月
C. 停产3个月以上恢复生产时应进行型式试验
D. 预防性检验只做电气绝缘性能试验
[判断题]腐蚀性物质,包装必须严密,不允许泄露,严禁与液化气体和其他物品共存。( )
A.正确
B.错误
[多选题] 在Photoshop中,下列哪些途径可以创建选区?( )
A.利用基本选框工具
B.利用Alpha通道
C.利用路径调板
D.利用快速蒙版
[单选题]预防肠道传染病的综合措施中,应以什么环节为主
A. 隔离治疗病人
B. 隔离治疗带菌者
C. 切断传播途径
D. 疫苗预防接种
E. 接触者预防服药
[判断题]钱某在A县抢劫作案两起,在B县盗窃作案一起,在C县销赃时被C县公安机关抓获。该案应由A县公安机关立案侦查,B、C两县公安机关无管辖权。
正确 错误
A.正确
B.错误
[单项选择]我国城市生活垃圾的产量近几年增长较快。垃圾增长每年按()以上速度增长。
A. 7%
B. 8%
C. 9%
D. 10%
[单项选择]Which of the following is true about the global justice movement
A. It seduces many young activists to be Weathermen through its special styles.
B. Its key rules of conduct are identical with those of developing world.
C. Its main task is to speed up the course of the internationalization of U.S..
D. It has a lot of members that have taken part in the Vietnam War
[单选题]关于制动管控制模块BPCP,下列说法错误的是( )。
A.制动管控制模块BPCP响应均衡风缸的压力变化,从而实现制动管的充风、排风及保压
B.制动管控制模块BPCP相当于DK-1制动机的中继阀
C.紧急制动时,制动管控制模块BPCP不动作
[单选题]发生生产安全责任事故,除了应当查明事故单位得责任并依法予以追究外,还应当对有失职、渎职行为得追究( ) 。
A.刑事责任
B.连带责任
C.法律责任
D.同等责任
[单选题]各级行内设部门,除办公室外,只能对()或者下级行本专业部门行文,且行文内容不得涉及其他部门的职权。
A.上级行
B.上级行非本专业部门
C.上级行本专业部门
D.上级行办公室