热门试题:
[单选题]风热上攻所致的头痛、目赤、咽喉肿痛宜选用
A.薄荷
B.菊花
C.牛蒡子
D.蝉蜕
[不定项选择题]共用题干
A Biological Clock
Every living thing has what scientists call a biological clock that controls behavior. The bio- logical clock tells______(51)when to form flowers and when the flowers should open. It tells ______(52)when to leave the protective cocoons and fly away,and it tells animals and human beings when to eat,sleep and wake.
Events outside the plant and anima______(53)the actions of some biological clocks.Sci- entists recently found,for example,that a tiny animal changes the color of its fur______(54) the number of hours of daylight.In the short______(55)of winter,its fur becomes white.The fur becomes gray brown in color in the longer hours of daylight in summer.
Inner signals control other biological clocks.German scientists found that some kind of internal clock seems to order birds to begin their long migration______(56)twice each year. Birds ______(57)flying become restless when it is time for the trip,______(58)they become calm again when the time of the flight has ended.
Scientists say they are beginning to learn which______(59)of the brain contain biologica] clocks.An American researcher,Martin Moorhead,said a small group of cells near the front of the brain______（60)to control the timing of some of our actions.These______(61)tell a person when to______(62),when to sleep and when to seek food.Scientists say there proba- bly are other biological clock cells that control other body activities.
Dr Moorhead is studying______(63)our biological clocks affect the way we do our work .For example,most of us have great difficulty if we must often change to different work hours.
______(64)can take many days for a human body to accept the major change in work hours .Dr. Moorhead said industrial officials should have a better understanding of biological clocks and how they affect workers.He said______(65)understanding could cut sickness and accidents at work and would help increase a factory's production.
57._________
A.prevented from
B.ordered by
C.helped by
D.intruded on
[单选题]中性点经装设消弧线圈后，若接地故障的电感电流小于电容电流，此时补偿方式为(____)。
A.全补偿方式
B.过补偿方式
C.欠补偿方式
D.不能确定
[单选题]专责监护人（）兼做其他工作。专责监护人临时离开时，应通知被监护人员停止工作或撤离工作现场，待专责监护人回来后方可恢复工作。
A.允许
B.视情况可
C.不得
D.以上三种都可以
[判断题]高处断线时，作业人员可站在放线滑车上操作。
A.正确
B.错误
[多选题]违反《安全生产法》规定，生产经营单位有下列（）行为之一的，责令限期改正。
A.未在有较大危险因素的生产经营场所和有关设施、设备上设置明显的安全警示标志的
B.未对安全设备进行经常性维护、保养和定期检测的
C.对重大危险源未登记建档，或者未进行评估、监控，或者未制定应急预案的
D.安全设备的安装、使用、检测、改造和报废不符合国家标准或者行业标准的
E.使用国家明令淘汰、禁止使用的危及生产安全的工艺、设备的
[判断题]桩基施工作业场地应平整压实，软土地基地面应加垫路基箱或厚钢板，作业区域及泥浆池、污水池等应有明显标志或围栏。（ ）
A.正确
B.错误
[多选题]脚手架的（ ）应设1.2m高的护栏，0.6m处设中栏杆和不小于180平方毫米高的挡脚板或设防护立网。临街或临近带电体的脚手架应采取封闭措施，架顶栏杆内侧的高度应低于外墙200平方毫米。
A.外侧
B.平台
C.内侧
D.斜道
[单选题]判别绿通总原则是坚持入口吃、不耐放。()
A.易腐败
B.易清洗
C.易保存
D.易销售
[判断题]2.48 装有ABS系统的机动车在冰雪路面上会最大限度缩短制动距离。
A.正确
B.错误
[多项选择]个人访谈是社会信息收集经常采用的一个重要方法，通常分为( )等类型。
A. 非正式的会话式访谈
B. 重点问题访谈
C. 封闭型的访谈
D. 正式的会话式访谈
E. 非封闭型访谈
[单项选择]直接与地方居民发生关系的地方政府是( )
A. 基层地方政府
B. 中层地方政府
C. 高层地方政府
D. 最高层地方政府
[多选题]下列哪两个状态不学习STP域的MAC地址（）whichstatusdon'tlearnthemacaddressofstpdomain()
A.倾听(listening)
B.学习(learning)
C.转发(forwarding)
D.阻塞(blocking)
[填空题]有一女子生性豪放，不拘小节，曾经酒醉躺在石头上睡着，她是（）。
[多选题]CR400AF动车组前端车钩缓冲装置主要由连挂系统和（）构成。
A.气液缓冲器
B.缓冲系统
C.安装吊挂系统
D.连接卡环
[单选题](B737ng)下面哪种情况不能使发动机驱动的发电机控制继电器跳开?
A.A． 将相应的发电机电门置于0FF位
B.B． 过压(0V)保护或欠压(LV)保护
C.C． 过频(0F)保护或欠颜(UF)保护
D.D． 过流(<3C)保护
[单选题]受弯预制构件，设计要求的最大裂缝宽度允许值为0.2mm时，其构件检验的最大裂缝宽度允许值[wmax]应取（ ）
A.0.10mm
B.0.15mm
C.0.20mm
D.0.25mm
[判断题]停止离心泵前应将入口阀逐渐关小,直至全关。( )
A.正确
B.错误
[单选题]施工现场临时用电设备总容量在( )及以上者,应编制用电组织设计。
A.50kW
B.40kW
C.30kW
D.20kW
[多项选择]燃气按热值分类，可分为( )燃气。
A. 中高热值
B. 低热值
C. 高热值
D. 中热值
E. 中低热值
[单选题] 热平衡是()平衡的一种类型,它反映了进入系统的热能与离开系统的热能之间的平衡,说明了热量被有效利用的程度。
A. 数量
B. 能量
C. 热量
D. 质量
[单项选择]某年，电信公司投入了巨资改善网络通信质量和网络覆盖区，结果当年用户增加了20%，但是利润却下降了10%。
最可能的原因是( )。
A. 新增用户的消费总额较低
B. 网络包年费大幅度降低
C. 电信公司当年的管理出了问题
D. 电信公司为扩大网络覆盖区投入的资金过多
[简答题]轴向位移保护装置起什么作用？有几种型式？
[单选题]在全国人民面前第一次明确提出彻底的反帝反封建的民主革命纲领的大会是：( )
A.中共一大
B.中共二大
C.中共四大
D.国民党一大
[多选题]按照《中国银监会办公厅关于加强银行业消费者权益保护解决当前群众关切问题的指导意见(银监办发(2016)30号)》,银行业金融机构应按照银监会相关规定,严格代销业务范围,完善代销业务内部管理制度,加强合作机构和产品准入管理,认真落实各项销售环节监管要求,做好风险隔离,保障消费者的___.___和___。( )
A.兑付收益权
B.财产安全权
C.知情权
D.自主选择权
[单选题]电流互感器二次回路( )接地。
A.不允许
B.一点
C.两点
D.多点
[多选题]行政诉讼法规定的期间以（）计算
A.时
B.日
C.月
D.年
[单选题]根据工作许可证的要求，负责人应向作业人员交代工作任务和沟通工作申请单中分析的作业风险及（ ）
A.电压
B.防护
C.安全措施
D.说明
[单选题]白内障术后配镜的时间
A..1个月
B..2个月
C..3个月
D..6个月
[填空题]GSM900的频道号划分是以（）为一间隔，共有（）个频道号，其收发频率间隔为（）。
[单选题]下列交易或事项中，不应确认为营业外收入的是（）。
A.捐赠利得
B.收到与收益有关的政府补助
C.出售无形资产的净收益
D.转让无形资产使用权的收益
[单选题]运营公司根据属地划分，（ ）单位负责消防设施的防火检查。
A.属地单位
B.消防控制室
C.消防委外单位
D.综合机电中心
[单项选择]Before the economy fell apart, it was Britain’s society that was supposed to be in terminal decline, especially in the eyes of the Tories. David Cameron, the Conservative Party leader, was wont to bemoan "broken Britain", mired in moral degeneracy, with high rates of teenage pregnancy, low rates of marriage and other less quantifiable breakdowns in the civilised scheme of things.
Such antediluvian worries were raked over again on July 13th when Iain Duncan Smith, a former Tory leader, called for an official endorsement of marriage. Mr Duncan Smith cites several reasons to encourage wedlock, including family stability (married couples are much less likely to split than cohabiting ones ) and healthier children who do better in later life. There was talk of state-run counselling, pro-marriage propaganda in schools and mandatory "cooling-off" periods before divorces. Mr Duncan Smith favours tax breaks for married couples, something that Labour has long refused to endorse.
It is
A. It would improve family stability and facilitate the upbringing of children as well as people’s future development.
B. Low birth rate has threatened the population of the country.
C. British government did little in the marital affairs of people.
D. Various measures should be adopted by the government to encourage marriages.
[单选题]以下说法错误的是( )
A.唯物辩证法是客观辩证法与主观辩证法的统一
B.唯物辩证法是伟大的认识工具
C.辩证思维方法是现代科学思维方法的基础和原则
D.唯物辩证法就是现代科学思维方法
[单选题]机车台呼叫调度的信令是（ ）。
A.186.2Hz
B.1960Hz
C.1520Hz
D.114.8Hz
[多项选择]On Maintaining Trust
[多项选择]S7500E和S7500相比，75E的主要优势包括：（）
A. 提供更多槽位的机箱
B. MPLS
C. 分布式转发
D. IPv6
