【多选题】
[69]汽轮机高压级的主要损失有___。
A. 叶高损失
B. 叶轮摩擦损失
C. 漏汽损失
D. 湿气损失
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答案
ABC
解析
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[70]关于备用泵的低温防冻,下列说法正确的有___。
A. 防潮氮气保持畅通
B. 有冷却水的要保证冷却水畅通,旁路稍开
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[71]汽轮机单机试运时振动过大的原因有___。
A. 暖机时间及温度不够;
B. 升速过快;
C. 蒸汽带水;
D. 真空度下降。
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[72]离心式压缩机转子组件包括___。
A. 叶轮;
B. 平衡盘;
C. 推力盘;
D. 密封动坏
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[74]汽轮机的叶片主要可分三部分___
A. 轮缘;
B. 轮毂;
C. 轮盘;
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[75]制冷系统压力发生变化的原因有。___
A. 冷剂用户波动
B. 轻组份污染
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D. 转速发生变化
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[77]压缩机紧急停车动作来源有___.
A. 超速跳闸
B. 现场手动跳闸
C. 外来信号联锁跳闸
D. 流量低
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[78]复水泵交出检修操作工要关哪些阀?___
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[79]机组跑油进缸体原因___。密封油高报
A. 密封油高报
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C. 油气分离器堵
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[80]由于流体在导管横截面上各点的流速并不相同,越接近管中心处流速( ),离管壁越近处,流速___,紧靠管壁处流体流速( )。
A. 越大
B. 越小
C. 为零
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[82]汽轮机叶片损坏原因___
A. 机械损伤;
B. 水击损伤;
C. 腐蚀和锈蚀损伤;
D. 叶片本身存在缺陷。
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[83]汽轮机止推轴承的作用___
A. 承受转子的轴向力;
B. 确保转子与汽缸的定心作用;
C. 确保叶片与喷嘴的间隙;
D. 叶轮与隔板的定心作用。
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[84]试指出下列情况中,属于系统误差的是___;随机误差的是( );疏忽误差有( )。
A. 用一只普通万用表测量同一个电压,每隔十分钟测一次,重复测量十次,数值相差,造成误差
B. 看错刻度线造成误差
C. 仪表安装位置不当造成误差
D. 选错单位或算错数字,造成误差
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[85]烯烃能发生的化学反应有___。
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B. 氧化反应
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[86]下列泵( )在启动时必须先开出口阀,___在启动时必须先关出口阀。
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B. 离心泵
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[87]安全阀的选用类型主要是以___来确定的。
A. 排泄量
B. 排气能力
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D. 工艺介质
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[88]常用的轴封种类有下列哪几项___
A. 填料密封
B. 机械密封
C. 动力密封
D. 浮环密封
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[89]对停用泵盘车是为了防止泵轴发生___,按时盘车可以使机泵处于随时可以启动状态。
A. 弯曲
B. 变形
C. 零部件锈蚀
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[90]在开泵前盘车是为了检查机泵运转系统是否正常,有无___,对重质油泵检查内部有无冻凝现象。
A. 卡死
B. 刮磨现象
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[91]螺杆泵按数量分为___
A. 单螺杆泵
B. 双螺杆泵
C. 多螺杆泵
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[92]管壳式换热器主要由___、( )、( )和( )等部件构成
A. 壳体
B. 管束
C. 管板
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[93]透平轴位移偏大原因___
A. 真空度低
B. 级间压差大
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[94]机组轴承产生油膜振动原因___
A. 油膜太薄
B. 转速过高
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[95]裂解气压缩机吸入罐液面超高的原因___
A. 裂解气温度组分变化
B. 段间压力、温度发生变化
C. 排放阀送出管线堵塞
D. 界面控制仪表失灵
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[96]酸性气为何设在四段后___
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D. 塔设备要求
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[97]制冷系统压力发生变化的原因有___
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[98]透平凝液量增大的可能原因___
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[99]K-501共有哪些停车停号___
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[100]影响真空度因素___
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[101]本装置乙烯去向___
A. LLDPE
B. 全密度
C. 苯乙烯
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[102]压缩机紧急停车动作来源有___
A. 超速跳闸
B. 现场手动跳闸
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[103]剧毒化学品生产企业的下列行为中,符合《危险化学品安全管理条例》规定的有___
A. 发现剧毒化学品被盗、丢失,立即向当地公安部门报告
B. 每年对生产、储存装置进行一次安全评价
C. 剧毒化学品在综合仓库存放
D. 在储存场所设置通讯、报警装置
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[104]《中华人民共和国安全生产法》规定,生产经营单位的特种作业人员上岗作业的条件和要求是___
A. 按照国家有关规定经专门的安全作业培
B. 经企业培训合格
C. 取得特种作业操作资格证书
D. 经质监部门培训合格
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[105]《危险化学品安全管理条例》规定,国家对危险化学品的___实行统一规划、合理布局和严格控制,并实行审批制度。
A. 生产
B. 运输
C. 经营
D. 储存
【多选题】
[106]生产经营单位的从业人员是指该单位从事生产经营活动各项工作的所有人员包括___。
A. 管理人员
B. 技术人员
C. 各岗位的工人
D. 临时聘用的人员
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[107]新《安全生产法》关于从业人员的安全生产义务主要有___。
A. 即遵章守规,服从管理
B. 佩戴和使用劳动防护用品
C. 接受培训,掌握安全生产技能
D. 发现事故隐患及时报告
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[108]企业必须在本单位醒目位置设置公告栏,在存在安全生产风险的岗位设置告知卡,分别标明___等内容。
A. 企业的生产经营情况
B. 本企业、本岗位主要危险危害因素、后果
C. 企业的应急演练情况
D. 事故预防及应急措施、报告电话等内容
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[109]生产经营单位的主要负责人对本单位安全生产工作负有___职责。
A. 建立、健全本单位安全生产责任制;组织制定本单位安全生产规章制度和操作规程
B. 组织制定并实施本单位安全生产教育和培训计划;保证本单位安全生产投入的有效实施
C. 督促、检查本单位的安全生产工作,及时消除生产安全事故隐患
D. 组织制定并实施本单位的生产安全事故应急救援预案;及时、如实报告生产安全事故
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[110]新《安全生产法》建立了严重违法行为公示和通报制度,以下表述正确的是___
A. 要求负有安全生产监督管理部门建立安全生产违法行为信息库,如实记录生产经营单位的安全生产违法行为信息
B. 对违法行为情节严重的生产经营单位,应当向社会公告
C. 生产经营单位负责人必须在主流媒体公开作出检查
D. 通报行业主管部门、投资主管部门、国土资源主管部门、证券监督管理部门和有关金融机构
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[111]安监部门在依法对一储存经营危险物品的商店进行检查时,发现其储存危险物品的仓库与员工宿舍在同一座建筑内,依据新《安全生产法》规定,可以做出处罚的是___。
A. 责令限期改正,可以处五万元以下的罚款
B. 对其直接负责的主管人员和其他直接责任人员可以处一万元以下的罚款
C. 商店主要负责人应作出书面检查
D. 立即取消其经营资格
【多选题】
[112]对可能发生急性职业损伤的有毒、有害工作场所,用人单位应当设置___。
A. 24小时有人在岗的值班室
B. 报警装置
C. 配置现场急救用品、冲洗设备
D. 应急撤离通道和必要的泄险区
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21.—Why not take ____ umbrella with the sign “Made in China”? It is useful. —What _______ good advice it is!    A. an; a B. a; a C. an; \ D. \; a
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22. —Do you know the boy________ is sitting next to Peter? — Yes. He is Peter’s friend. They are celebrating his ________ birthday. A. who; ninth B. that; ninth C. /; ninth D. which; ninth
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23. It was dark, ______ I couldnt see what was happening. A. or B. though C. but D. so
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24.—You can use MSN to talk with Vivien on the Internet. —I know. But can you tell me ________? A. what I can use it B. when I can use it C. why can I use it D. how can I use it
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25. _______ are you going to the School Uniform Exhibition, Amy ? To learn about different styles of school uniform. A. What B. Where C. Which D. Why
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( ) 26. Where does the writer of "The little Prince" come from? A.England. B.France. C.America. D.China.
A. A
B. B
C. C
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【单选题】
( ) 27. What does the prince do after the fox tells him a secret? A.He cares more about a flower and a sheep. B.He meets many more strange adults on other planets. C.He realizes his love for the rose and he goes back to his planet.   D.He discovers interesting things such as a snake, other roses and a fox
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B. B
C. C
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【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________. A.the adult world B.the planet B -612 C.a rose and a fox D.the adventure of a young prince
A. A
B. B
C. C
D. D
【单选题】
( ) 29. What is the writer's main purpose(目的)in writing this passage?    A.To tell the readers his life story.    B.To tell people what kind of person his father was.    C.To tell the readers what present he got from his father.    D. To let people know how poor he was.
A. A
B. B
C. C
D. D
【单选题】
( ) 30. Why did the father not ask his son not to do this and do that?    A.Because he felt quite confident of his son.    B.Because he was born from a poor family.    C.Because he was a man of few words.    D.Because he didn't want to be much too strict with his son.
A. A
B. B
C. C
D. D
【单选题】
( ) 31. What would someone learn from this passage?    A.How to live by oneself. B.How to stand on one's own feet.    C.What a good father should do. D.What the self-important is like.
A. A
B. B
C. C
D. D
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage?    A.闲暇时光 B.学费 C.精神空虚 D.经济不足
A. A
B. B
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( ) 33. Why did Natalie Smith pay for the six cars behind her? A. She had seven tickets. B. She hoped to please others. C. She knew the car drivers well. D. She wanted to show kindness.
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( ) 34. Judy Foreman copied down the phrase because she ___ . A. thought it was beautifully written B. wanted to know what it really meant C. decided to write it on a warehouse wall D. wanted her husband to put it up in the classroom
A. A
B. B
C. C
D. D
【单选题】
( ) 35. Who came up with the phrase according to the passage? A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
A. A
B. B
C. C
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( ) 36. What can we infer from the last paragraph? A. People should practice random kindness to those in need. B. People who receive kindness are likely to offer it to others. C. People should practice random kindness to strangers they meet. D. People who receive kindness are likely to pay it back to the giver.
A. A
B. B
C. C
D. D
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( ) 37.The greatest river for navigation is ___________. A. the Nile B. the Amazon C. the Mekong D. the Mississippi
A. A
B. B
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( ) 38. From a dam, people can use the water for ___________. A. keeping the rivers clean B. only making electricity C. irrigation and making electricity D. washing clothes
A. A
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( ) 39. The water in the river is polluted because of _____________. A. people's drinking water too much B. people's swimming in the river too much C. chemicals and other materials D. people's building a dam across a river
A. A
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( ) 40. The best title of the passage is ___________. A. Rivers in Cities B. The importance of Rivers C. Transportation D. Natural Resources
A. A
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