热门试题:
[填空题] 10-35KV人体与带电体之间最小安全距离( )有安全遮栏( ),无安全遮栏( )。
[单选题]下述冷却水量、冷幅宽和冷幅高都相同的单座逆流式冷却塔与横流式冷却塔的差别中,不正确的是何项?( )
A.逆流式冷却塔的风阻大
B.逆流式冷却塔热交换效率高
C.逆流式冷却塔填料容积少
D.逆流式冷却塔风机排气回流较大
[多选题]PIS系统使用的电压包括()。
A.220V
B.110V
C.24V
D.380V
[判断题]铁路对变更后的货物运到期限大于容许运输期限不予办理
A.正确
B.错误
[单选题]Ann Curry is a famous news presenter of the NBC News"Today"show.When she was 15 she?happened to walk into a bookstore in her hometown and began looking at the books on the shelves.The man behind the counter,Mac McCarley,asked if she′d like a job.She needed to start saving?for college,so she said yes.
Ann worked after school and during summer vacations,and the job helped pay for her first year?of college.During college she would do many other jobs:she served coffee in the students′union,was a hotel maid and even made maps for the US Forest Service.But selling books was one of the?most satisfying jobs.
One day a woman came into the bookstore and asked Ann for books on cancer(癌症).The?woman seemed anxious.Ann showed her practically everything they had and found other books they?could order.The woman left the store less worried,and Ann has always remembered the pride she?felt in having helped her customer.
Years later,as a television reporter in Los Angeles,Ann heard about a child who was born with?problems with his fingers and his hand.His family could not afford a surgical(外科的)operation,and the boy lived in shame,hiding his hand in his pocket all the time.
Ann persuaded her boss to let her do the story.After the story was broadcast,a doctor and a?nurse called,offering to perform the surgical operation for free.
Ann visited the boy in the recovery room after the operation.The first thing he did was to hold?up his repaired hand and say,"Thank you."What a sweet sense of satisfaction Ann Curry felt!At McCarley′s bookstore,Ann always sensed she was working for the customers,not the store.Today it′s the same.NBC News pays her,but she feels as if she works for the people who watch the?programmes,helping them make sense of the world.
How did Ann help the child get the operation he needed?
A.Ann persuaded the boy to speak on TV.
B.Ann paid for the operation herself.
C.Ann's boss agreed to raise money.
D.Ann's news report moved some doctors.
[单项选择]喷吸钻工作时,切屑()出来。
A. 全靠切屑液冲
B. 全靠切屑液吸
C. 靠切削液喷和吸的双层作用排
D. 靠切屑变形力排
[单选题]电焊机使用时二次线长度不得超过( )m,并设有防护罩。
A.20
B.30
C.40
D.50
[单选题]在无引气压力时,空调组件流量控制活门。
A.保持关闭
B.保持打开
C.根据温度自动调节
D.自动断电
[单项选择]()颁布的《公民道德建设实施纲要》标志着我国公民教育的体系建设进入一个新的发展阶段。
A. 1998年
B. 2001年
C. 2005年
D. 2010年
[多项选择]商品交换必须实行等价交换,这是商品经济必须遵循的一条重要原则。下列选项中对等价交换的正确认识有()
A. 交换双方的商品在使用价值量上相等
B. 交换双方的商品在价值量上相等
C. 货币出现后,要求价格与价值相一致
D. 价格上下波动,不能与价值相一致
E. 它只存在于商品交换的平均数中,并不一定存在于每个个别场合
[单项选择]屈光系统不包括下列哪项().
A. 角膜
B. 房水
C. 晶状体
D. 玻璃体
E. 虹膜
[多项选择]调查询问值班人员,主要应询问()等内容。
A. 交接班时间、记录
B. 用火、用电情况
C. 发现起火的经过、火势蔓延情况和采取的措施
D. 值班巡查情况
E. 有无人员进出现场及时间、路线
[单选题]高铁大型和普速一等以外的车站在候车室检票口附近设置黄色标识的重点旅客候车专座,数量不少于( )。
A.2个
B.3个
C.4个
D.5个
[填空题]客货共线铁路,速度大于120km/h,小于等于160km/h的区间双线线间最小距离规定为( )
[判断题]CR400AF型动车组碳滑板铝基板下边缘到碳滑板碳层上边缘得到的总高减17mm,得到的差值≧7mm
A.正确
B.错误
[单选题]消化道X线诊断目前最佳的检查方法是
A.腹部平片像
B.硫酸钡造影检查
C.钡剂双重对比造影检查
D.碘油造影检查
E.腹部透视
[单选题]生产经营单位应当具备有关法律.法规和( ).( ).( )规定的安全生产条件,建立健全并实施生产经营活动全过程安全生产和职业健康管理制度。
A.行业标准.地方标准.企业标准
B.国家标准.行业标准.地方标准
C.国家标准.地方标准.企业标准
[填空题]炼化产品的安全生产和经营市场,必须要认识到不论进攻和防守都要有_奋斗精神。
[单选题]计算机病毒是( )
A.一种人为特制的计算机程序
B.计算机系统自生的
C.可传染疾病给人体的病毒
D.主机发生故障时产生的
[多选题] 系统中的计划操作,应尽可能避免在下列( )时间进行。
A.交接班时
B.系统发生事故时
C.系统高峰负荷时段
D.遇雷雨、大风、大雾等恶劣天气时
[单项选择]Two Iranian guards have been expelled because they_______.
A. were involved in espionage
B. incited religious confrontation
C. were involved in civil crimes
D. violated photographing restrictions
[判断题] 碳酸盐岩层比泥岩层更容易发生扩径。
A.正确
B.错误
[填空题]有源应答器电缆传输长度超过()Km时,应将LEU设备放置异地。
[判断题]安全风险评估通常按照建立评估组织、确定评估方法、开展评估分析、形成评估报告的程序进行
A.正确
B.错误
[单选题]单位内发生涉嫌刑事案件时,单位内部治安保卫部门应当( )。
A.立即报警,并先期开展搜查工作
B.立即报警,并讯问犯罪嫌疑人
C.立即报警,采取现场保护措施
D.暂不报警,内部调查犯罪嫌疑人
[单选题]关于证券评级机构,下列说法错误的是()。
A.证券评级机构不得涂改、倒卖、出租、出借证券评级业务许可证
B.证券评级机构不得为他人提供融资,但是可以提供担保
C.证券评级机构的实际控制人、股东、董事、监事、高级管理人员应当遵纪守法,不得从事损害证券评级机构及其评级对象合法权益的活动
D.证券评级机构应当在每个季度结束之日起10个工作日内,向注册地中国证监会派出机构报送包含经营情况、财务数据等内容的季度报告
[多项选择]双代号网络图中,关键工作是指( )的工作。
A. 总时差最小
B. 总时差为零
C. 关键线路上
D. 持续时间最长
E. 自由时差为零
[单项选择]“写得快”三音节词可略写为( )。
A. 写d
B. 写d
C. 写快b
D. 写-
[单项选择]我国现存第一部治疗肺痨的专著是
A. 《理虚元鉴》 B.《十药神书》
B. 《赤水玄珠》 D.《济生方》
C. 《寿世保元》
[判断题]( )在辙叉部分改道时,应处理好查照间隔、护背距离和翼轨、护轨轮缘槽宽度之间的关系。
A.正确
B.错误
[判断题]
C/A码的码长较短,易于捕获,但码元宽度较大,测距精度较低,所以C/A码又称为捕获码或粗码。
A.正确
B.错误
[单项选择]下述结核球的特点,错误的是()
A. 较高密度,可有钙化
B. 可有偏心的小空洞形成
C. 常有卫星灶,胸壁侧可有粗大毛刺
D. 为2cm以下片状影
E. 边缘清晰,可有浅分叶