热门试题:
[单项选择]在常用的γ射线源中60Co的半衰期为是()。
A. 33年
B. 5.3年
C. 130天
D. 75天
[简答题]
Once upon a time, American students tested better than any other students in the world. Now, ranked against European schoolchildren, America does about as well as Lithuania, behind at least 10 other nations. (46)The relative decline of American edu- cation at the elementary- and high-school levels has long been a national embarrass- ment as well as a threat to the nation’s future.
For much of this time--roughly the last half century-professional educators believed that if they could only find the right method of instruction, all would be well. (47)However, nothing seemed to achieve significant or lasting improvements, yet in recent years researchers have discovered something that may seem obvious, but for many reasons was overlooked or denied. What really makes a difference, what matters more than the class size or the textbook, the teaching method or the technology, or even the curriculum, is the quality of the teacher. Much of the ability to teach is
[判断题]严禁在区间进行摘挂作业。
A.正确
B.错误
[简答题]三相交流电源各相负荷应力求( ),已改善三相电源的使用条件,应有错序、断相监督和报警设备。
[判断题]液压系统动力机构的作用是利用油泵把机械能传递给液体,使密闭在容器内的液体产生压力能。( )
A.正确
B.错误
[多选题]下列是关于安全带使用的阐述,正确的有( )。
A.。佩带安全带时,要束紧腰带,腰扣组件必须系紧系正
B.。不得将绳打结使用,也不得将钩直接挂在安全绳上使用
C.。禁止将安全带挂在移动、带尖锐棱角或不牢固的物件上
D.使用3m及以上的长绳时,必须加上缓冲器、自锁器或防坠器等
E.安全带应两年抽验一次,频繁使用应经常进行外观检查,发现异常必须立即更换
[不定项选择题]使用绝缘设备时必须注意的内容( )
A.远离带电设备
B.佩戴正确劳保
C.佩戴防静电手环
D.不能带电操作
[单选题]诊断急性胰腺炎胰腺坏死的最佳方法是
A. B超
B. X线腹部平片
C. 胃镜
D. 核素扫描
E. 增强CT
[判断题]我国剥削制度被消灭的标志是土地改革的完成。( )
A.正确
B.错误
[单项选择]当存量房交易双方分歧较大时,房地产经纪人应()。
A. 尝试将交易双方分开进行协调
B. 尝试让交易双方自行协调
C. 积极向交易双方分析房源缺陷
D. 请求行政管理部门出面解决
[单选题]本小题1分UPS即不间断电源,是一种含有储能装置,以()为主要组成部分的恒压恒频的不间断电源。
A.充电装置
B.蓄电池
C.逆变器
D.输出装置
[单选题] 施工总承包的,建筑工程( )的施工必须由总承包单位自行完成。
A.地基基础工程
B.主体结构
C.装修工程
D.一半以上的工程量
[单选题]甲夜入民宅行窃,被主人发现,用木棍将主人打昏,携带赃物逃走后,唯恐主人醒后报案,又返回将主人杀死。甲构成()。
A.抢劫罪
B.故意伤害罪、抢劫罪、故意杀人罪
C.故意杀人罪
D.抢劫罪和故意杀人罪
[多项选择]跨境人民币结算业务应参照外币国际结算业务有关流程()等。
A. 进行交易真实性审核
B. 履行反洗钱与反恐融资义务
C. 办理国际收支统计申报
D. 进行结售汇单据审核
[单选题]等产量曲线上某一点的切线的斜率值等于()。
A.预算线的斜率
B.等成本线的斜率
C.边际技术替代率
D.边际产量
[判断题]按照设备按装及使用方式分为固定泡沫灭火系统、半固定泡沫灭火系统和移动式泡沫灭火系统。
A.正确
B.错误
[判断题]按照《征信业管理条例》的规定,贷款记录较多或信用卡账户较多的,即使未发生逾期、欠息等违约情况,也属于不良信息。( )
A.正确
B.错误
[单项选择]当今随着信息技术的飞速发展,人们对光存储容量的要求不断提高,下列哪个光存储技术是目前最先进的?()
A. CD
B. DVD
C. LAserDisk
D. Blu-RAyDisC(蓝光DVD.
[单选题]危险化学品.烟花爆竹.民用爆炸物品生产企业预案未通过专家评审的,不得颁发()。
A.危险化学品登记证
B.安全生产许可证
C.安全经营许可证
[单选题]使用链条葫芦和手扳葫芦,带负荷停留较长时间或过夜时,应采用手拉链或扳手绑扎在吊钩上,并采取保险措施。()
A.正确
B.错误
C.略
D.略
E.略
F.略
[单选题]技术创新奖、成果应用奖的二等奖单项授奖人数不超过()人
A.8.0
B.7.0
C.6.0
D.5.0
[单项选择]由于离心力的作用,使汽车在平曲线上行使时横向产生两种不稳定的危险分别是()
A. 向外滑移和向外倾覆
B. 向内滑移和向内倾覆
C. 向内滑移和向外倾覆
D. 向外滑移和向内倾覆
[单项选择]The private car is assumed to have widened our horizons and increased our mobility. When we consider our children’s mobility, they can be driven to more places than they could visit without access to a motor vehicle. However, allowing our cities to be dominated by cars has progressively eroded children’s independent mobility. Children have lost much of their freedom to explore their own neighborhood or city without adult supervision.
Children’s independent access to their local streets may be important for their own personal, mental and psychological development. Allowing them to get to know their own neighborhood and community gives them a ’sense of place’. This depends on active exploration, which is not provided for when children are passengers in cars. Not only is it important that children be able to get to local play areas by themselves, but walking and cycling journeys to school and to other destinations provide genuine play activities in themselves.
The reduction
A. the German parents do better in educating children
B. the German children are braver than those in other countries in traveling
C. the German children can do well without the supervision of parents
D. traffic calming initiatives function well in German for children’s development
[单项选择]Alport综合征最早、最常见的临床表现是()
A. 水肿
B. 氮质血症
C. 蛋白尿
D. 高血压
E. 血尿
[单项选择]简介:目录:小说
A. 关键词:索引:论文
B. 大纲:习题:教材
C. 海报:预告片:电影
D. 主题:草案:议案
[判断题]电气焊作业,动火作业点应配备消防器材、接火斗,安排兼职看火监护人员。
A.正确
B.错误
[判断题]事故隐患是指作业场所、设备或设施的不安全状态,人的不安全行为和管理上的缺陷。
A.正确
B.错误
[单项选择]There are certain _________when you must interrupt people who are in the middle of doing something.
A. occasions
B. conditions
C. environments
D. situations
[判断题]禁止在只经断路器(开关)断开电源且未接地的高压配电线路或设备上工作。
A.正确
B.错误
[不定项选择题]患者男性,51岁。患胰腺癌广泛转移,病情日趋恶化,面部消瘦,呈铅灰色,眼眶凹陷,下颌下垂,双眼半睁、呆滞,嘴微张,目前患者对过去做的错事表示悔恨,变得很和善,愿意努力配合治疗。
对该患者亲属的心理支持不正确的是
A.多给患者同情和照顾
B.多听取并鼓励家属表达情感
C.避免亲属单独接触患者,以免悲伤过度
D.讲解有关卫生知识
E.共同讨论护理计划
[单项选择]大幅度改变阀门的工作温度,其能够承受的压力将可能()。
A. 增大
B. 减小
C. 不变
D. 随温度改变
[判断题]出租汽车企业服务质量信誉考核工作应当每年进行一次,并在考核周期次年的1月31日前完成。
[单项选择]()是党的基础组织,担负直接教育党员、管理党员、监督党员和组织群众、宣传群众、凝聚群众、服务群众的职责。
A. 党小组
B. 党支部
C. 党委会
D. 党总支
[判断题]标定AgNO3溶液可用银量法中的任一方法,但最好选用与测定样品相同的方法,可消除方法的系统误差。
A.正确
B.错误
[多项选择]下列各种生理功能的调节,与下丘脑有关的是
A. 体温的恒定
B. 水平衡
C. 觉醒的维持
D. 垂体激素的分泌