热门试题:
[单选题]BH01风险是指( )。
A.单位时间内人员暴露于危险环境中的次数
B.能引起的后果的严重程度
C.后果事件发生的几率
D.某一特定危害事件发生的可能性与后果的组合
[判断题]信贷管理系统中,贷款未结清前押品无法出库。
A.正确
B.错误
[填空题]任何单位、个人都有维护消防安全、()、预防火灾、()的义务。
[多项选择]下列哪三个因素对准确计算套管鞋处地层破裂压力是重要的?()
A. 准确的泵冲计数器
B. 准确的压力表
C. 准确的钻井液密度
D. 准确的套管鞋垂深
E. 准确的井眼容积
F. 在井口以下安装可回收式封隔器
[不定项选择题]共用题干
Water一the Issue of This Century
The world is running short of freshwater. Populations are growing bigger and thirstier (渴的),with the result that freshwater is becoming increasingly scarce(缺乏).Half the world's wetlands have disappeared during the last century,while estimates suggest that wa- ter use will rise by 50% in the next 30 years.
The World Bank report estimates that as much as half of the world's population,concentrated in Africa,the Middle East and south Asia,will face“severe water shortages”by 2025.Local water conflicts and the loss of freshwater ecosystems appear large in some re- gions.
A similar picture emerges from the globe's salt water regions. Three-quarters of the world's people may live within 100km of the sea in 2025,putting even more pressure on stretched coastal ecosystems. Two thirds of fisheries(渔业)are exploited at or beyond their sustainable limits, and half the world's coral reefs(珊瑚礁)may perish in 100 years. Almost 60% of coral reefs and 34% of fish species are at risk from human activities,the Bank says.
The report concludes that there is ample evidence to justify immediate and coordinated action to safeguard supplies and use water more efficiently.
Fresh water consumption is rising quickly,and the availability of water in some regions is likely to become one of the most pressing issues of the 21st century.
A third of the world's popu1ation一around two billion people一live in countries that are experiencing moderate to high water shortages.That proportion could rise to half or more in the next 30 years unless institutions(制度)change to ensure better conservation and alloca- tion of water.
China is one country where the portents(征兆)are gloomy. The most waterstressed country in East Asia,China is exploiting 44%of its usable water,a figure projected to rise to6O%by 2020.Primary withdrawal of water of more than 60%is widely considered by water experts to exceed the environmental carrying capacity of a river basin system. Although
China's total use appears still to be reasonable,it has several basins that are severely stressed environmentally.
Withdrawals exceed environmental limits in Afghanistan and Pakistan,and will exceed them in India by 2020.In the Middle East and North Africa,only Morocco has unexploited water resources.The rest have exceeded environmental limits and many are mining aquifers (蓄水层)一bodies of water-bearing rock一the report says.
Some species of fish in the Atlantic are at dangerously low levels.
A.Right
B.Wrong
C.Not mentioned
[多选题]卸污设备检修分为()和()。
A.日常故障维修
B.日常检修
C.定期检修
D.定期维修
[单项选择]The writing in the article must be as () as possible so that all readers can understand the complex issue.
A. clear
B. clearer
C. clearest
D. clearly
[判断题]操作钻床时不能戴帽子( )。
A.正确
B.错误
[单选题]车站发生毒气袭击时:若需要疏散车站乘客,在受袭的车站做好乘客广播,( ),动车前确认站台岗的“好了”信号后,关闭车门、屏蔽门,立即动车,按行调命令执行。
A.可上下客
B.只下不上
C.只上不下
D.不可上下
[判断题]差动螺旋传动可以产生极小的位移,能方便地实现微量调节
A.正确
B.错误
[多项选择]关于税法的攮本原则,下列表述正确的有( )。
A. 税收法定主义的功能偏重于保持税法的稳定性与可预测性
B. 经济上的税收公平具备强制约束力,是制定税法的依据之一
C. 出于适当保留税务执法机关的自由裁量权、便于征收管理、协调税法体系的目的和立法技术上的要求,有时在税法中作出较模糊的规定是难免的
D. 经过法律解释含义仍不确切的概念是不能在税法中成立的
E. 税收公平主义赋予纳税人既可以要求实体利上税收公平,也可以要求程序上税收公平的权力
[单项选择]Why does the author say that the protection of endangered species is a highly controversial issue
[多选题]高压试验作业人员在全部加压过程中,应()。
A.精力集中
B.操作人应站在绝缘垫上
C.随时警戒异常现象发生
D.有人监护并呼唱
[判断题]林地承包方连续两年不植树造林的,原发包单位应当终止承包合同,收回发包的林地。
[单选题]对进口的放射源,( )还应当同时确定与其标号相对应的放射源编码。
A.国务院生态环境主管部门
B.省级生态环境主管部门
C.海关
D.边防检查部门
[单选题]Word中,格式工具栏上标有"U"图形按钮的作用是使选定对象____。
A. 变为斜体
B. 变为粗体
C. 加下划线单线
D. 加下划波浪线
[单选题]进入危害现场进行侦察或作业前应设置安全员,大面积灾害现场应多点设置安全员,在()进行登记,检查防护装备,明确进攻路线、通信方式、撤离信号、撤退路线、接应点,安全员必须坚守战位,保持不间断联络,做好接应准备,直至内攻人员全部撤出,严禁擅离职守。 ( )
A.出入口处
B.内攻起点处
C.单位大门处
D.全勤指挥部外
[判断题]用钳表测量电流时,尽量将 导线置于钳口铁芯中间,以 减少测量误差。
A.正确
B.错误
[单选题]谈话函询材料应当存入个人档案。( )
A.A:对。
B.
C.略
D.略
E.略
F.略
[判断题]银监会及其派出机构违法采取检查或执行措施,给公民人身或财产造成损害、给银行业金融机构或其他单位造成损失的,应当依法予以赔偿。
[判断题]高电压通常指超过低压的电压等级。特定情况下,指电力系统中输电的电压等级。
A.正确
B.错误
[多选题]现金收费遇当次收费金额错误的,出口收费站()本次差额,确认交易,回收收费凭证并重新开具,收费系统中做当次收费金额调整特情记录。
A.补收
B.重收
C.退还
D.减免
[判断题]债券借贷业务按照交易对手的不同,可分为与上海清算所等市场中介组织开展的债券借贷交易和与市场成员开展的债券借贷交易
A.正确
B.错误
[判断题]严禁有人机在发电厂、变电站区域垂直正上方1000m及以下高度范围内飞行。
A.正确
B.错误
[单选题]220kV及以下杆塔上带电核相时,作业人员与带电部位保持()的安全距离。
A.2.0米
B.2.5米
C.3.0米
D.3.5米
[判断题]13、17号线ATS工作站中,若列车在终端折返站采取比较固定或规律的折返方式,根据运营调度的需要,为提高折返效率,行调人员可以使用自动折返功能为折返列车办理折返进路。
A.正确
B.错误
[单选题]对单相接地电流大于5A时的电动机,应装设反映()的零序电流保护。
A.两相短路
B.三相短路
C.单相接地短路
[单项选择]D630塔的塔顶温度是()℃。
A. 88~105
B. 78~85
C. 65~70
D. 50~70
[填空题]接发列车时,车站值班员应亲自办理闭塞、布置进路( )、开闭信号、交接凭证、接送列车、发车。
[判断题]消防救援人员必须遵守有关国旗、国歌的法律法规,维护和捍卫国旗、国歌的尊严。( )
A.正确
B.错误
[单选题]《国家电网有限公司卓越服务工程实施方案》规定,当前,我国正处于能源转型发展的关键时期,预计到(____)年,我国能源清洁化率和电气化率将会达到“两个50%”。
A.2060
B.2050
C.2035
D.2025
[判断题]客户 2013 年 1 月 1 日首次在我行开立账户,且购买 10 万元国债,则 2013年 1 月 31 日,该客户为我行金卡客户。
A.正确
B.错误
[单项选择]电子商务网站竞争对手分析()。
A. 需要考虑对方的产品,以及与自己产品的差异性
B. 不必关心其平台及功能
C. 不必了解其网络运营目标
D. 需要考虑其营销策略,但不需要考虑其销售渠道和方式
[单项选择]在分布式数据库的数据分配中,所有全局数据有且只有一份,它们被分割成若干片断,每一个片断被分配在一个特定的场地上,这种数据分配的方法属于______。
A. 集中式
B. 分割式
C. 全复制式
D. 混合式